{"product_id":"igs-audio-a-type-525","title":"IGS Audio A-Type 525","description":"\u003cdiv lang=\"en\"\u003e\n\u003cstrong\u003eIGS Audio A-Type 525\u003c\/strong\u003e\n\n\u003cp\u003eThe A-Type 525 is a discrete VCR compressor\/limiter in 500-series format, modelled on a classic American design from the 1970s. The entire signal path uses discrete through-hole components – no integrated circuits in the compression stage. Input balancing is handled by an SSM2141 op-amp; the output runs through an IGS Custom transformer. A second audio transformer sits in the feedback path: it conditions the detection signal before returning it to the VCR (Voltage Controlled Resistor), which directly controls the resistance of the first gain stage. This is a true feedback topology – the compressor responds to what has already passed through the first amplification stage rather than anticipating the input, which produces the characteristically musical gain reduction behaviour associated with classic American hardware from that era.\u003c\/p\u003e\n\n\u003ch3\u003eCompress switch – one control instead of two\u003c\/h3\u003e\n\u003cp\u003eThe control layout is where the A-Type 525 separates itself from standard clones. The Compress switch simultaneously adjusts Gain and Threshold together, allowing the engineer to dial in compression depth while keeping peak output level constant. This removes one of the most common errors in evaluating compressor behaviour in-session: mistaking loudness for effectiveness. Separate Threshold and Output controls remain available for independent fine-tuning of the activation point and output level. Attack time is fixed at 15 µs – fast enough for transient control on drums, picked bass, and acoustic guitar. Release time is user-selectable across four discrete steps: 0.1 s, 0.5 s, 1.5 s, and 2.0 s.\u003c\/p\u003e\n\n\u003ch3\u003eLimiter and de-esser without additional modules\u003c\/h3\u003e\n\u003cp\u003eBeyond Compressor (2:1) and Limiter (20:1) modes, the A-Type 525 includes a built-in de-esser – a function that typically requires a separate module or a DAW insert. The de-esser attenuates sibilance in vocal recordings without touching the surrounding frequency content, making it possible to handle sibilance control at the tracking stage directly in the 500-series chain. Hardwire bypass and multi-unit linking capability complete the feature set for stereo or multi-channel setups. Maximum gain reduction is 25 dB; maximum input level +27 dBu, maximum output level +28 dBu.\u003c\/p\u003e\n\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDiscrete VCR feedback topology – no integrated circuits in the compression path\u003c\/li\u003e\n\u003cli\u003eCompress switch – simultaneous Gain and Threshold adjustment without peak level change\u003c\/li\u003e\n\u003cli\u003eFixed attack time: 15 µs\u003c\/li\u003e\n\u003cli\u003eFour release times: 0.1 \/ 0.5 \/ 1.5 \/ 2.0 s\u003c\/li\u003e\n\u003cli\u003eOperating modes: Compressor (2:1), Limiter (20:1), De-Esser\u003c\/li\u003e\n\u003cli\u003eBalanced input: SSM2141 op-amp\u003c\/li\u003e\n\u003cli\u003eTransformer output: IGS Custom\u003c\/li\u003e\n\u003cli\u003eSecond transformer in the feedback detection path\u003c\/li\u003e\n\u003cli\u003eHardwire bypass\u003c\/li\u003e\n\u003cli\u003eMulti-unit linking for stereo and multi-channel use\u003c\/li\u003e\n\u003cli\u003e3-year manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: discrete VCR compressor\/limiter, 500-series, mono\u003c\/li\u003e\n\u003cli\u003eOperating modes: Compressor 2:1, Limiter 20:1, De-Esser\u003c\/li\u003e\n\u003cli\u003eAttack time: 15 µs (fixed)\u003c\/li\u003e\n\u003cli\u003eRelease time: 0.1 \/ 0.5 \/ 1.5 \/ 2.0 s\u003c\/li\u003e\n\u003cli\u003eMaximum gain reduction: 25 dB\u003c\/li\u003e\n\u003cli\u003eMaximum gain: 25 dB\u003c\/li\u003e\n\u003cli\u003eInput impedance (balanced): 10 kΩ, SSM2141\u003c\/li\u003e\n\u003cli\u003eOutput impedance (balanced): 75 Ω, IGS Custom transformer\u003c\/li\u003e\n\u003cli\u003eOperating level: +4 dBu\u003c\/li\u003e\n\u003cli\u003eMaximum input level: +27 dBu\u003c\/li\u003e\n\u003cli\u003eMaximum output level: +28 dBu\u003c\/li\u003e\n\u003cli\u003eBypass: hardwire\u003c\/li\u003e\n\u003cli\u003eLinking: yes\u003c\/li\u003e\n\u003cli\u003eFormat: 500-series, single slot\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"IGS Audio","offers":[{"title":"Default Title","offer_id":54001646305617,"sku":"60248","price":751.32,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/IGSAudioA-Type5251.jpg?v=1781175942","url":"https:\/\/wrdtunes.com\/fr-fr\/products\/igs-audio-a-type-525","provider":"Wired Tunes","version":"1.0","type":"link"}