API Audio 5500 Dual Equalizer – dual-channel discrete parametric equalizer inspired by classic API 550B. Offers 4 EQ bands per channel with peak/shelf filters for precise tone shaping. Ideal for mixing/mastering. 1U enclosure (483 x 44 x 216 mm, 3.6 kg) with aluminum panels.
5500 uses 2520 op-amps and 2503 transformer for rich API sound, range control (full/half/quarter) for subtle changes. Switches: bypass, input gain. Balanced XLR I/O, LED metering. Hand-soldered in USA for quality.
As versatile classic, adds character without compromise.
MAIN FEATURES
- Two channels of 4-band EQ with peak/shelf
- Range control for fine adjustments
- 2520 op-amps and 2503 transformer
- True hard-wire bypass
- Integrated power supply with noiseless muting
- Balanced XLR I/O
- Portable: 483 x 44 x 216 mm, 3.6 kg
TECHNICAL SPECIFICATIONS
- Bands: 4 per channel (LF 35-200 Hz, LM 200-800 Hz, HM 1.5-5 kHz, HF 7-18 kHz)
- Boost/Cut: ±12 dB
- Input: Balanced XLR, impedance 10 kOhm
- Output: Balanced XLR, max +30 dBu
- Frequency Response: 20 Hz–20 kHz (±0.5 dB)
- THD + N: < 0.05% @ 1 kHz
- Noise EIN: < -90 dBu
- Power Supply: 100-240 V AC
- Dimensions (W × H × D): 483 x 44 x 216 mm (1U)
- Weight: 3.6 kg
- Included: 5500, manual
- Product Code: API-5500











