{"title":"Semi-Open Back Headphones","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eSemi-open back headphones\u003c\/strong\u003e combine the advantages of open and closed constructions – offering a wider soundstage than closed models while maintaining better isolation than fully open headphones. A versatile choice for producers and engineers who need one model for various studio applications.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","products":[{"product_id":"beyerdynamic-dt-880-pro-250-ohm","title":"Beyerdynamic DT-880 Pro 250 Ohm","description":"\u003cdiv lang=\"en\"\u003e\n\u003cp\u003e\u003cstrong\u003eBeyerdynamic DT 880 PRO (250 Ω)\u003c\/strong\u003e – semi-open dynamic over-ear studio headphones; 5–35,000 Hz frequency response; 96 dB nominal SPL; \u0026lt;0.2% THD; nominal headband pressure ≈3.5 N; 295 g (without cable); single-sided 3.0 m coiled cable; 3.5 mm plug with 6.35 mm adapter; made in Germany.\u003c\/p\u003e\n\u003cp\u003eThe DT 880 PRO combines the spatial presentation of open headphones with the control of closed designs. A robust spring-steel headband ensures a secure, studio-grade fit, while the semi-open architecture delivers neutral, highly detailed monitoring suitable for mixing, editing and mastering.\u003c\/p\u003e\n\u003cp\u003eSoft replaceable velour pads support long sessions, and the single-sided coiled lead simplifies frequent on\/off handling at the console. All wear parts (earpads, headband pad, cable) are serviceable to extend working life.\u003c\/p\u003e\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSemi-open, circumaural design for spacious, neutral monitoring\u003c\/li\u003e\n\u003cli\u003e250-ohm system tuned for studio headphone amps and interfaces\u003c\/li\u003e\n\u003cli\u003eSpring-steel headband; firm, consistent fit (≈3.5 N)\u003c\/li\u003e\n\u003cli\u003eSingle-sided 3.0 m coiled cable; 3.5 mm plug with 6.35 mm adapter\u003c\/li\u003e\n\u003cli\u003eSoft, replaceable velour earpads; user-serviceable construction\u003c\/li\u003e\n\u003cli\u003eHandmade in Germany\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType \/ operating principle: Dynamic, semi-open\u003c\/li\u003e\n\u003cli\u003eEar coupling: Circumaural (over-ear)\u003c\/li\u003e\n\u003cli\u003eFrequency response: 5 – 35,000 Hz\u003c\/li\u003e\n\u003cli\u003eImpedance: 250 Ω\u003c\/li\u003e\n\u003cli\u003eNominal SPL: 96 dB\u003c\/li\u003e\n\u003cli\u003eTotal harmonic distortion (THD): \u0026lt; 0.2%\u003c\/li\u003e\n\u003cli\u003ePower handling capacity: 100 mW\u003c\/li\u003e\n\u003cli\u003eNominal headband pressure: 3.5 N\u003c\/li\u003e\n\u003cli\u003eWeight (without cable): 295 g\u003c\/li\u003e\n\u003cli\u003eCable: 3.0 m, coiled, single-sided\u003c\/li\u003e\n\u003cli\u003eConnector: 3.5 mm TRS + 6.35 mm adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Beyerdynamic","offers":[{"title":"Default Title","offer_id":46825305375057,"sku":"47199","price":148.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/products\/12877647_800_011a2092-5884-4466-8ed2-ad23e106bd29.jpg?v=1689101793"},{"product_id":"sennheiser-hd-400-pro","title":"Sennheiser HD 400 PRO","description":"\u003cdiv lang=\"en\"\u003e\n\u003cp\u003e\u003cstrong\u003eSennheiser HD 400 PRO\u003c\/strong\u003e – open-back studio reference headphones with 38 mm dynamic transducers, lightweight design, and angled drivers for low distortion. It provides neutral sound reproduction, flexible cabling, and high comfort for editing, mixing, and mastering. On board, there is a specialized polymer diaphragm, velour earpads, and extensive performance functions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSennheiser HD 400 PRO\u003c\/strong\u003e is an environment for sound creation designed for professional use. It features circumaural over-ear design with accurate and spacious soundstage, suitable for studios and creators. Flexible I\/O with coiled and straight cables enables a wide range of configurations – including new ones for the Sennheiser ecosystem.\u003c\/p\u003e\n\u003cp\u003eSound is deeply integrated: 120 ohm impedance for precise audio, wide frequency response, low THD for clarity. Monitoring can be done in real-time – for automatic tuning of sources. The headphones offer German engineering, replaceable parts, and advanced audio options.\u003c\/p\u003e\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOpen-back design for natural sound reproduction\u003c\/li\u003e\n\u003cli\u003eLightweight 240 g for extended comfort\u003c\/li\u003e\n\u003cli\u003eAngled transducers for low distortion at high SPL\u003c\/li\u003e\n\u003cli\u003eSpacious and accurate soundstage\u003c\/li\u003e\n\u003cli\u003eIncludes 1.8 m coiled and 3 m straight cables\u003c\/li\u003e\n\u003cli\u003e3.5 mm jack with 6.3 mm adapter\u003c\/li\u003e\n\u003cli\u003eVelour earpads for breathability\u003c\/li\u003e\n\u003cli\u003eProfessional tool for editing, mixing, and mastering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTransducer Principle: Dynamic, open\u003c\/li\u003e\n\u003cli\u003eEar Coupling: Circumaural\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 6 Hz – 38 kHz (-10 dB)\u003c\/li\u003e\n\u003cli\u003eImpedance: 120 Ω\u003c\/li\u003e\n\u003cli\u003eSound Pressure Level (SPL): 110 dB (1 kHz \/ 1 V RMS)\u003c\/li\u003e\n\u003cli\u003eTotal Harmonic Distortion (THD): \u0026lt; 0.05 % (1 kHz \/ 1 V RMS)\u003c\/li\u003e\n\u003cli\u003eTransducer Size: 38 mm\u003c\/li\u003e\n\u003cli\u003eConnection: Wired\u003c\/li\u003e\n\u003cli\u003eCable: Coiled 1.8 m with 3.5 mm jack, straight 3 m with 3.5 mm jack\u003c\/li\u003e\n\u003cli\u003eConnector: 3.5 mm jack plug with 6.3 mm adapter\u003c\/li\u003e\n\u003cli\u003eEar Pad Material: Velour\u003c\/li\u003e\n\u003cli\u003eWeight (without cable): 240 g\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -5 °C to +45 °C\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: -20 °C to +70 °C\u003c\/li\u003e\n\u003cli\u003eRelative Humidity: \u0026lt; 90%\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":46825472098641,"sku":"47562","price":235.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/SennheiserHD400PRO1.jpg?v=1757849192"},{"product_id":"fostex-t50rpmk3","title":"Fostex T50RPmk3","description":"\u003cdiv lang=\"en\"\u003e\n\u003cstrong\u003eFostex T50RPmk3\u003c\/strong\u003e is the third generation of the T50RP — semi-open monitoring headphones built on a polyimide film diaphragm with copper foil etching and neodymium magnets. The mk3 debuted in 2015 as the successor to the mk2, introducing a redesigned diaphragm with improved damping, new low-rebound ear pads, and an updated headband. The same driver generation ran for nearly 10 years, becoming one of the most widely modified headphone platforms in planar magnetic history — its successor, the T50RPmk4, only delivered a genuinely new driver in 2024.\n\n\u003ch3\u003eThird-generation RP driver — monitoring characteristics\u003c\/h3\u003e\nAt 50 Ω and 92 dB\/mW (1 kHz, 1 mW), the mk3 has significantly higher drive requirements than the T50RPmk4 (28 Ω \/ 97 dB\/mW). A dedicated headphone amplifier is a practical requirement for professional monitoring work — the mk3 will not reach adequate SPL from a laptop headphone output or low-voltage audio interface. The mk3's flat frequency response neither flatters nor deceives: bass is accurate without colouration, the midrange is neutral, and the improved diaphragm damping relative to the mk2 reduced the characteristic dip around 4 kHz. Cable entry is left-cup only, via a proprietary locking 3.5 mm TRS socket — a fundamental wiring difference from the mk4, which has symmetrical sockets on both sides.\n\n\u003ch3\u003eT50RPmk3 as a modification platform\u003c\/h3\u003e\nNo headphone series has been modified as extensively as the T50RPmk3. A decade of community documentation — from simple pad swaps through damping modifications and acoustic tuning to full driver rebuilds — made the mk3 a reference point for the DIY audiophile community. The stock sound is neutral and monitoring-accurate, but requires amplification. Ear pad modifications (ZMF Ori, Dekoni Blue, and others) shift the bass profile and soundstage in predictable, well-documented ways. OEM replacement pads EX-EP-RPmk3 restore the factory acoustic profile when the originals wear out. The mk4 with its new driver is substantially more difficult to accidentally degrade through modification, but also less amenable to the deep acoustic tuning that relied on the mk3's low stock sensitivity as a starting point.\n\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3rd-generation RP driver — polyimide film diaphragm with copper foil etching, neodymium magnets\u003c\/li\u003e\n\u003cli\u003eSemi-open design — flat, accurate monitoring frequency response without tonal colouration\u003c\/li\u003e\n\u003cli\u003e50 Ω impedance \/ 92 dB\/mW sensitivity — dedicated headphone amplifier required for professional use\u003c\/li\u003e\n\u003cli\u003e3,000 mW maximum input tolerance — wide dynamic headroom with high-output amplifiers\u003c\/li\u003e\n\u003cli\u003eDetachable left-cup cable (locking 3.5 mm TRS) — 3 m cable with 6.3 mm plug and 1.2 m cable with 3.5 mm plug included\u003c\/li\u003e\n\u003cli\u003eLow-rebound ear pads — replaceable with OEM EX-EP-RPmk3\u003c\/li\u003e\n\u003cli\u003eEstablished modification platform — extensive community documentation and accessory ecosystem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: T50RPmk3\u003c\/li\u003e\n\u003cli\u003eDriver type: Planar magnetic RP (Regular Phase), 3rd generation\u003c\/li\u003e\n\u003cli\u003eDiaphragm: Polyimide film with copper foil etching\u003c\/li\u003e\n\u003cli\u003eDesign: Semi-open\u003c\/li\u003e\n\u003cli\u003eImpedance: 50 Ω\u003c\/li\u003e\n\u003cli\u003eSensitivity: 92 dB\/mW (at 1 kHz, 1 mW)\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15 Hz – 35,000 Hz\u003c\/li\u003e\n\u003cli\u003eMaximum input power: 3,000 mW\u003c\/li\u003e\n\u003cli\u003eEarcup connector: Locking 3.5 mm TRS (left cup only)\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 315 g (without cable)\u003c\/li\u003e\n\u003cli\u003eIncluded accessories: 3 m cable with 6.3 mm plug (black), 1.2 m cable with 3.5 mm plug (orange)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"FOSTEX","offers":[{"title":"Default Title","offer_id":53693023617361,"sku":"59503","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/FostexT50RPmk31.jpg?v=1777977075"},{"product_id":"fostex-t50rpmk4","title":"Fostex T50RPmk4","description":"\u003cdiv lang=\"en\"\u003e\n\u003cstrong\u003eFostex T50RPmk4\u003c\/strong\u003e is the fourth generation of the T50RP — one of the longest-running planar magnetic driver platforms in audio, used in studio monitoring environments since 1974. The mk4 is the first generation with a fully redesigned RP driver since the transition to the mk3: new printed coil pattern, increased magnet count, rebuilt magnetic circuit, and a new symmetrical housing with sockets on both sides. Impedance dropped to 28 Ω while sensitivity increased to 97 dB\/mW.\n\n\u003ch3\u003eWhat changed in the fourth-generation driver\u003c\/h3\u003e\nThe third-generation RP driver ran for nearly 20 years — from the mk3 in 2015 through the mk4's 2024 debut. The generational difference is substantially deeper than the mk2-to-mk3 transition, which was primarily a tuning revision on the same driver geometry. The mk4 introduces a redesigned printed coil trace pattern that expands and equalizes the diaphragm vibration area, increased magnet count sandwiching the diaphragm for stronger controlled drive, optimized magnetic flux distribution eliminating self-resonance modes, and a completely new housing geometry. The electrical result is measurable: impedance dropped from 50 Ω (mk3) to 28 Ω, and sensitivity rose from 91 dB\/mW to 97 dB\/mW — the mk4 drives adequately from an audio interface or portable source without a dedicated headphone amplifier, whereas the mk3 required substantial output voltage in the same context. Frequency response extends to 10 Hz – 40,000 Hz, compared to 15 Hz – 35,000 Hz on the mk3.\n\n\u003ch3\u003eNew cable topology and balanced connectivity\u003c\/h3\u003e\nPrevious T50RP generations used a left-cup-only proprietary connector. The mk4 introduces a 4-pole 3.5 mm TRRS socket on both earcups — the cable connects on either side with no tonal difference. Symmetrical housing eliminates the acoustic L\/R asymmetry caused by differing internal structures between sides. The 4-pole socket is balanced-capable from the factory — optional balanced cables ET-RP2.5BL (2.5 mm), ET-RP4.4BL (4.4 mm), and ET-RPXLR connect without adapters. The T50RPmk4 retains its status as a modding platform: ear pad swaps, internal damping modifications, and acoustic tuning remain viable, with a significantly higher stock performance baseline than the mk3.\n\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4th-generation RP driver — new coil trace pattern, increased magnets, optimized magnetic circuit\u003c\/li\u003e\n\u003cli\u003e28 Ω impedance \/ 97 dB\/mW sensitivity — drives from audio interfaces and portable sources without a dedicated amplifier\u003c\/li\u003e\n\u003cli\u003eFrequency response 10 Hz – 40,000 Hz — extended vs mk3 (15 Hz – 35,000 Hz)\u003c\/li\u003e\n\u003cli\u003eSymmetrical housing with bilateral 4-pole TRRS 3.5 mm sockets — no L\/R acoustic asymmetry\u003c\/li\u003e\n\u003cli\u003eBalanced-capable out of the box — compatible with ET-RP2.5BL, ET-RP4.4BL, ET-RPXLR balanced cables\u003c\/li\u003e\n\u003cli\u003eSemi-open design — acoustically unified with T50RPmk4CL closed-back platform\u003c\/li\u003e\n\u003cli\u003eLow-rebound circumaural ear pads — optional Ultrasuede EX-EP-RP60 available separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: T50RPmk4\u003c\/li\u003e\n\u003cli\u003eDriver type: Planar magnetic RP (Regular Phase), 4th generation\u003c\/li\u003e\n\u003cli\u003eDesign: Semi-open\u003c\/li\u003e\n\u003cli\u003eImpedance: 28 Ω\u003c\/li\u003e\n\u003cli\u003eSensitivity: 97 dB\/mW\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10 Hz – 40,000 Hz\u003c\/li\u003e\n\u003cli\u003eMaximum input power: 3,000 mW\u003c\/li\u003e\n\u003cli\u003eEarcup connectors: 4-pole 3.5 mm TRRS (symmetrical bilateral)\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 330 g (without cable)\u003c\/li\u003e\n\u003cli\u003eIncluded accessories: OFC cable 3.5 mm (4-pole to 3-pole, 2 m), 3.5 mm to 6.3 mm adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"FOSTEX","offers":[{"title":"Default Title","offer_id":53693023650129,"sku":"59491","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/FostexT50RPmk41.jpg?v=1777977067"},{"product_id":"fostex-t50rpmk4g","title":"Fostex T50RPmk4g","description":"\u003cdiv lang=\"en\"\u003e\n\u003cstrong\u003eFostex T50RPmk4g\u003c\/strong\u003e is a semi-open gaming headphone built on the identical hardware platform as the T50RPmk4 — fourth-generation RP planar driver in a symmetrical housing with sockets on both sides. The only difference from the T50RPmk4 is the bundled cable and market positioning: the T50RPmk4g ships with a 3.5 mm TRRS-to-TRS cable (combo jack on one end, standard stereo TRS on the other) instead of the 4-pole-to-3-pole cable included with the studio variant. The hardware — housing, driver, ear pads — is the same unit.\n\n\u003ch3\u003eFourth-generation RP driver and gaming-specific performance characteristics\u003c\/h3\u003e\nRP planar technology drives the full diaphragm surface uniformly, minimizing phase distortion and producing fast transient response. In competitive multiplayer environments, footsteps, gunshots, and environmental audio cues are all short-duration transients. The faster and more accurate the driver's impulse response, the more precisely the headphone renders direction and distance of sound sources. The fourth-generation driver's redesigned printed coil, increased magnet count, and optimized flux distribution produce faster attack and decay than the third generation, at improved sensitivity of 97 dB\/mW and lowered impedance of 28 Ω — meaning the T50RPmk4g drives directly from a console, laptop, or controller without an external amplifier. The symmetrical housing with identical internal structures on both sides eliminates the acoustic L\/R asymmetry common in headphones with single-sided cable routing, which directly benefits stereo imaging accuracy.\n\n\u003ch3\u003eT50RPmk4g vs T50RPmk4 — what the cable difference actually means\u003c\/h3\u003e\nThe two models are physically identical. The cable change from 4-pole-to-3-pole (studio variant) to TRRS-to-TRS (gaming variant) adapts the headphone to the standard combo 3.5 mm jack found on consoles, laptops, and controllers. It does not affect acoustic performance or internal wiring — the headphones support balanced connections via the 4-pole earcup socket, and the optional ET-RP4.4BL 2.0 balanced cable (4.4 mm Pentaconn) is compatible with both variants. Memory foam circumaural ear pads provide consistent acoustic seal and comfort over extended sessions.\n\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4th-generation RP planar driver — full-surface diaphragm drive, fast transients, precise spatial localization\u003c\/li\u003e\n\u003cli\u003eSymmetrical housing with bilateral sockets — no L\/R acoustic asymmetry, cable connects on either side\u003c\/li\u003e\n\u003cli\u003e28 Ω impedance \/ 97 dB\/mW sensitivity — drives directly from consoles, laptops, and mobile devices\u003c\/li\u003e\n\u003cli\u003e3.5 mm TRRS-to-TRS cable — compatible with consoles, laptops, and mobile devices\u003c\/li\u003e\n\u003cli\u003eSemi-open design — natural soundstage with moderate ambient isolation\u003c\/li\u003e\n\u003cli\u003eMemory foam circumaural ear pads — comfort over long gaming sessions\u003c\/li\u003e\n\u003cli\u003eIdentical hardware platform to T50RPmk4 — full accessory compatibility with RP mk4 series\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: T50RPmk4g\u003c\/li\u003e\n\u003cli\u003eDriver type: Planar magnetic RP (Regular Phase), 4th generation\u003c\/li\u003e\n\u003cli\u003eDesign: Semi-open\u003c\/li\u003e\n\u003cli\u003eImpedance: 28 Ω\u003c\/li\u003e\n\u003cli\u003eSensitivity: 97 dB\/mW\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10 Hz – 40,000 Hz\u003c\/li\u003e\n\u003cli\u003eMaximum input power: 3,000 mW\u003c\/li\u003e\n\u003cli\u003eEarcup connectors: 4-pole 3.5 mm TRRS (symmetrical bilateral)\u003c\/li\u003e\n\u003cli\u003eIncluded cable: 3.5 mm TRRS to 3.5 mm TRS (stereo), 2 m\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 330 g (without cable)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"FOSTEX","offers":[{"title":"Default Title","offer_id":53693024403793,"sku":"59508","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/FostexT50RPmk4g1.jpg?v=1777977041"},{"product_id":"fostex-t50rpm4g","title":"Fostex T50RPm4g+","description":"\u003cdiv lang=\"en\"\u003e\n\u003cstrong\u003eFostex T50RPmk4g+\u003c\/strong\u003e is a semi-open gaming headset built on the fourth-generation RP planar driver, adding a dedicated detachable microphone, an inline controller, and a 3.5 mm TRRS combo cable to the T50RPmk4g platform. It is the first Fostex headset to include a microphone, while retaining the full T50RPmk4 hardware base: symmetrical housing with sockets on both sides, the fourth-generation planar driver with redesigned printed coil, and increased magnet count.\n\n\u003ch3\u003eFourth-generation RP driver in a gaming context — what planar technology actually delivers\u003c\/h3\u003e\nThe technical advantage of the T50RPmk4g+ over dynamic-driver gaming headsets is specific: RP planar technology drives the entire diaphragm surface uniformly, minimizing phase distortion and producing fast transient response. In competitive gaming terms, this means sharper localization of brief transient signals — footsteps, gunshots, environmental cues — where the time-accuracy of the reproduced impulse directly affects in-game decision speed. At 28 Ω and 97 dB\/mW sensitivity, the headset drives directly from a controller, laptop, or onboard audio without an external amplifier. The symmetrical housing — identical sockets on both left and right earcups — eliminates the internal acoustic asymmetry present in headphones where only one side carries cable routing components, resulting in more balanced channel separation and a more defined stereo image.\n\n\u003ch3\u003eMicrophone, inline controller, and cable topology\u003c\/h3\u003e\nThe microphone connects to either earcup socket, accommodating both left- and right-side preferences without modification. The controller integrated into the microphone cable handles microphone mute (ON\/OFF toggle) and headphone volume via a slider — a straightforward implementation with no software dependency. The included 2.0 m cable terminates in a 3.5 mm TRRS combo jack, compatible with laptops, consoles, and mobile devices with a single headset socket. Setups with separate mic and headphone 3.5 mm ports require a TRRS splitter. Memory foam circumaural ear pads provide consistent acoustic seal and stable fit during extended sessions.\n\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4th-generation RP planar driver — full-surface diaphragm drive, fast transients, precise spatial localization\u003c\/li\u003e\n\u003cli\u003eDetachable microphone connecting to either earcup — flexible routing for left- and right-handed setups\u003c\/li\u003e\n\u003cli\u003eInline controller on microphone cable — microphone mute toggle and headphone volume slider\u003c\/li\u003e\n\u003cli\u003eSymmetrical housing with bilateral sockets — balanced channel separation, no internal acoustic asymmetry\u003c\/li\u003e\n\u003cli\u003e28 Ω impedance \/ 97 dB\/mW sensitivity — drives without external amplifier\u003c\/li\u003e\n\u003cli\u003eSemi-open design — natural soundstage with moderate ambient isolation\u003c\/li\u003e\n\u003cli\u003eMemory foam circumaural ear pads — stable seal and comfort over long gaming sessions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: T50RPmk4g+\u003c\/li\u003e\n\u003cli\u003eDriver type: Planar magnetic RP (Regular Phase), 4th generation\u003c\/li\u003e\n\u003cli\u003eDesign: Semi-open\u003c\/li\u003e\n\u003cli\u003eImpedance: 28 Ω\u003c\/li\u003e\n\u003cli\u003eSensitivity: 97 dB\/mW\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10 Hz – 40,000 Hz\u003c\/li\u003e\n\u003cli\u003eMaximum input power: 3,000 mW\u003c\/li\u003e\n\u003cli\u003eMicrophone: Detachable, connects to left or right earcup\u003c\/li\u003e\n\u003cli\u003eController: Microphone mute + volume slider (inline on microphone cable)\u003c\/li\u003e\n\u003cli\u003eCable: 2.0 m, 3.5 mm TRRS (combo jack)\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 330 g (without cable)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"FOSTEX","offers":[{"title":"Default Title","offer_id":53693025878353,"sku":"59497","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/FostexT50RPm4g_1.jpg?v=1777976990"},{"product_id":"fostex-t60rp","title":"Fostex T60RP","description":"\u003cdiv lang=\"en\"\u003e\n\u003cstrong\u003eFostex T60RP\u003c\/strong\u003e is a semi-open planar magnetic headphone built around the third-generation RP driver in a solid African mahogany housing. Introduced in 2017–2018, it was the first headphone in the T-RP line to use a wood enclosure and served for years as the series reference — both in studio monitoring and audiophile listening contexts. Its successor, the T60RPmk2, replaced the third-generation RP driver with the fourth generation and changed the housing material to black walnut, while retaining the semi-open geometry and the overall sound philosophy.\n\n\u003ch3\u003eThird-generation RP driver and mahogany — the acoustic combination\u003c\/h3\u003e\nThe T60RP's driver is built on a polyimide film diaphragm with copper foil etching, driven by neodymium magnets in a Regular Phase arrangement — full-surface drive ensures uniform phase across the entire membrane, resulting in low phase distortion and the fast transient response characteristic of planar technology. At 50 Ω and 92 dB\/mW sensitivity, the T60RP has a practical requirement for a dedicated headphone amplifier — connecting directly to a laptop or smartphone headphone output will not yield adequate volume or dynamic performance. African mahogany as an enclosure material provides natural resonance damping while contributing a warm coloration in the lower midrange and upper bass, distinguishing the T60RP from the more analytically neutral plastic-housed models in the same RP lineup.\n\n\u003ch3\u003eConnector system and cabling\u003c\/h3\u003e\nThe first-generation T60RP uses a dedicated 4-pole 3.5 mm socket in the left earcup — a topologically different system from the dual independent 3.5 mm TS Y-cable sockets adopted on the T60RPmk2 and T60RPmk2CL. Cables designed for the mk2 generation, including ET-RP4.4BL2Y, do not fit the original T60RP directly. The T60RP's dedicated optional cables were the ET-RP4.4BL (4.4 mm balanced, 1.5 m) and ET-RP3.5UB (3.5 mm unbalanced). Stock low-rebound ear pads suit long sessions; the OEM replacement set EX-EP-RP60 restores the factory acoustic seal when the originals wear out.\n\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3rd-generation RP driver — polyimide film diaphragm with copper foil etching, neodymium magnets\u003c\/li\u003e\n\u003cli\u003eSemi-open solid African mahogany housing — warm character, natural resonance damping\u003c\/li\u003e\n\u003cli\u003e50 Ω impedance — requires a dedicated headphone amplifier for full performance\u003c\/li\u003e\n\u003cli\u003e3,000 mW maximum input tolerance — wide dynamic headroom with high-output amplifiers\u003c\/li\u003e\n\u003cli\u003e4-pole 3.5 mm left-cup socket — supports optional balanced cables ET-RP4.4BL (2.5 mm \/ 4.4 mm \/ XLR)\u003c\/li\u003e\n\u003cli\u003eLow-rebound ear pads as standard — replaceable with OEM EX-EP-RP60\u003c\/li\u003e\n\u003cli\u003eDual-layer genuine leather headband — stable fit, reduced crown pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: T60RP\u003c\/li\u003e\n\u003cli\u003eDriver type: Planar magnetic RP (Regular Phase), 3rd generation\u003c\/li\u003e\n\u003cli\u003eDiaphragm: Polyimide film with copper foil etching\u003c\/li\u003e\n\u003cli\u003eDesign: Semi-open\u003c\/li\u003e\n\u003cli\u003eImpedance: 50 Ω\u003c\/li\u003e\n\u003cli\u003eSensitivity: 92 dB\/mW\u003c\/li\u003e\n\u003cli\u003eFrequency response: 15 Hz – 35,000 Hz\u003c\/li\u003e\n\u003cli\u003eMaximum input power: 3,000 mW\u003c\/li\u003e\n\u003cli\u003eHousing material: Solid African mahogany\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 380 g (without cable)\u003c\/li\u003e\n\u003cli\u003eIncluded accessories: ET-RP3.5UB cable with 3.5 mm connector, 3.5 mm to 6.3 mm adapter, carrying pouch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"FOSTEX","offers":[{"title":"Default Title","offer_id":53693027549521,"sku":"59504","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/FostexT60RP1.jpg?v=1777976975"},{"product_id":"fostex-t60rpmk2","title":"Fostex T60RPmk2","description":"\u003cdiv lang=\"en\"\u003e\n\u003cstrong\u003eFostex T60RPmk2\u003c\/strong\u003e is a semi-open planar magnetic headphone built around the fourth-generation RP driver in a solid black walnut housing. It is the direct successor to the T60RP — a headphone with a track record in studio listening environments — introducing a new dual-socket Y-cable connection system and a completely redesigned driver. Manufacturing remains fully in-house at Fostex's own factory. The same fourth-generation driver platform underpins both the closed-back T60RPmk2CL and the Japan-made T60RPmk2ai.\n\n\u003ch3\u003eFourth-generation RP driver — what changed from the third generation\u003c\/h3\u003e\nThe third-generation RP driver served for nearly 20 years as the basis of the T50RP and T60RP lines. The fourth generation introduces a redesigned printed coil pattern — new trace geometry expands and equalizes the vibrating area across the full diaphragm surface. The number of magnets sandwiching the diaphragm has been increased, and the magnetic circuit components were rebuilt to optimize flux distribution, suppressing diaphragm self-resonance modes. The practical results are faster attack and decay, higher sensitivity at the same 28 Ω impedance, and more consistent frequency response — most audible in percussion transients and stereo localization accuracy. At 28 Ω, the T60RPmk2 is driveable from portable DAC\/amp combinations and audio interfaces without a dedicated headphone amplifier.\n\n\u003ch3\u003eBlack walnut housing and the new cable system\u003c\/h3\u003e\nThe semi-open geometry of the T60RPmk2 is a deliberate compromise: wider soundstage and more natural spatial imaging than a closed design, with more defined bass separation than a fully open construction. Solid black walnut provides natural damping of the housing's own resonance modes while contributing a warm midrange character — a complement to the inherently neutral and fast-transient planar drive technology. The new Y-cable system with two independent 3.5 mm TS sockets per earcup replaces the proprietary single connector of the original T60RP, improving third-party cable compatibility. The optional balanced cable ET-RP4.4BL2Y (4.4 mm Pentaconn) is available separately. Optional Ultrasuede EX-EP-RP-SUEDE ear pads are available as an upgrade over the stock low-rebound pads.\n\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4th-generation RP planar driver — redesigned printed coil, increased magnets, faster transient vs. 3rd gen\u003c\/li\u003e\n\u003cli\u003eSemi-open solid black walnut housing — natural soundstage, warm midrange character\u003c\/li\u003e\n\u003cli\u003e28 Ω impedance — driveable from portable DAC\/amp units and audio interfaces\u003c\/li\u003e\n\u003cli\u003eDual 3.5 mm TS earcup sockets (Y-cable) — independent channel connections, tool-free cable swaps\u003c\/li\u003e\n\u003cli\u003eCompatible with ET-RP4.4BL2Y balanced cable (4.4 mm Pentaconn)\u003c\/li\u003e\n\u003cli\u003eLow-rebound ear pads as standard — optional Ultrasuede EX-EP-RP-SUEDE available separately\u003c\/li\u003e\n\u003cli\u003eManufactured at Fostex domestic factory — integrated production for consistent quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: T60RPmk2\u003c\/li\u003e\n\u003cli\u003eDriver type: Planar magnetic RP (Regular Phase), 4th generation\u003c\/li\u003e\n\u003cli\u003eDesign: Semi-open\u003c\/li\u003e\n\u003cli\u003eImpedance: 28 Ω\u003c\/li\u003e\n\u003cli\u003eSensitivity: 96 dB\/mW\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10 Hz – 40,000 Hz\u003c\/li\u003e\n\u003cli\u003eMaximum input power: 3,000 mW\u003c\/li\u003e\n\u003cli\u003eHousing material: Solid black walnut\u003c\/li\u003e\n\u003cli\u003eEarcup connectors: 2x 3.5 mm TS (2-pole), Y-cable\u003c\/li\u003e\n\u003cli\u003eWeight: approx. 360 g (without cable)\u003c\/li\u003e\n\u003cli\u003eIncluded accessories: OFC Y-cable with 3.5 mm connector, 3.5 mm to 6.3 mm adapter, pouch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"FOSTEX","offers":[{"title":"Default Title","offer_id":53693027582289,"sku":"59479","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/FostexT60RPmk21.jpg?v=1777976964"},{"product_id":"fostex-t60rpmk2ai","title":"Fostex T60RPmk2ai","description":"\u003cdiv lang=\"en\"\u003e\n\u003cstrong\u003eFostex T60RPmk2ai\u003c\/strong\u003e is a semi-open planar magnetic headphone built around the fourth-generation RP driver, housed in a solid hard maple enclosure hand-dyed with Awa indigo by craftsmen in Tokushima Prefecture. It is the first Made in Japan model in the T60RP line — every unit is assembled by hand at Fostex's domestic factory. Standard equipment includes Toray Ultrasuede® ear pads and 7N-grade OFC internal wiring (99.99999% purity), the same internal wiring specification used in the flagship TH1000RPmk2 and TH1100RPmk2.\n\n\u003ch3\u003eHard maple housing and Awa-Ai dyeing — acoustic significance\u003c\/h3\u003e\nThe switch from black walnut (T60RPmk2) to hard maple is an acoustic decision as much as an aesthetic one. Hard maple is denser and stiffer than walnut, which reduces the housing's own resonance modes and yields a tighter soundstage, better transparency, and faster attack — most audible in percussion transients and string harmonics. The Awa-Ai dyeing process uses only natural indigo plant pigment with no synthetic fixatives; the pigment penetrates the wood structure rather than forming an external lacquer layer. This preserves the housing's acoustic behaviour more faithfully than hard-film finishes. Because each piece of maple has a unique grain, the pigment penetration depth and final colour vary between units — no two T60RPmk2ai housings are acoustically or visually identical.\n\n\u003ch3\u003eFourth-generation RP driver and 7N OFC wiring — differences vs T60RPmk2\u003c\/h3\u003e\nBoth the T60RPmk2ai and T60RPmk2 use the same fourth-generation planar driver: redesigned printed coil pattern, increased magnet count, and optimized magnetic flux distribution for improved sensitivity, smoother frequency response, and faster transient performance relative to the third generation. The key differentiator is internal wiring: the T60RPmk2ai uses 7N-grade OFC throughout the internal signal path instead of standard OFC, keeping conductor purity consistent from driver to earcup socket. Both left and right housings carry independent 2-pole 3.5 mm TS sockets for tool-free cable replacement. The optional balanced cable ET-RP4.4BL2Y (4.4 mm Pentaconn, Y-cable) is available separately.\n\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e4th-generation RP planar driver — full-surface diaphragm drive, improved sensitivity and transient vs. 3rd gen\u003c\/li\u003e\n\u003cli\u003eSolid hard maple housing with Awa indigo dye (Tokushima) — multi-day hand-dyeing with natural pigment only\u003c\/li\u003e\n\u003cli\u003eFirst Made in Japan T60RP model — hand-assembled at Fostex domestic factory\u003c\/li\u003e\n\u003cli\u003e7N-grade OFC internal wiring (99.99999%) — matches TH1000RPmk2\/TH1100RPmk2 internal spec\u003c\/li\u003e\n\u003cli\u003eToray Ultrasuede® ear pads included as standard — breathable, low-rebound, reduced fatigue on long sessions\u003c\/li\u003e\n\u003cli\u003e2-pole 3.5 mm TS sockets per earcup — Y-cable topology, compatible with ET-RP4.4BL2Y balanced cable\u003c\/li\u003e\n\u003cli\u003eSemi-open design — wide soundstage and natural spatial projection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: T60RPmk2ai\u003c\/li\u003e\n\u003cli\u003eDriver type: Planar magnetic RP (Regular Phase), 4th generation\u003c\/li\u003e\n\u003cli\u003eDesign: Semi-open\u003c\/li\u003e\n\u003cli\u003eImpedance: 28 Ω\u003c\/li\u003e\n\u003cli\u003eSensitivity: 96 dB\/mW\u003c\/li\u003e\n\u003cli\u003eFrequency response: 10 Hz – 40,000 Hz\u003c\/li\u003e\n\u003cli\u003eMaximum input power: 3,000 mW\u003c\/li\u003e\n\u003cli\u003eHousing material: Solid hard maple, Awa indigo dyed\u003c\/li\u003e\n\u003cli\u003eInternal wiring: 7N-grade OFC (99.99999%)\u003c\/li\u003e\n\u003cli\u003eEarcup connectors: 2x 3.5 mm TS (2-pole)\u003c\/li\u003e\n\u003cli\u003eEar pads: Ultrasuede® (Toray), included as standard\u003c\/li\u003e\n\u003cli\u003eManufacturing: Made in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n","brand":"FOSTEX","offers":[{"title":"Default Title","offer_id":53693027909969,"sku":"59488","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/FostexT60RPmk2ai1.jpg?v=1777976911"}],"url":"https:\/\/wrdtunes.com\/collections\/semi-open-back-headphones.oembed","provider":"Wired Tunes","version":"1.0","type":"link"}