Warm Audio WA-1B Optical Compressor

Technical Specifications

Product Description & External Specs (Per Channel)

• All-Tube, Transformer-Balanced Optical Compressor

• Output gain: Off to +30 dBU

• Input impedance: 600Ω

• Two bus connectors to connect multiple sidechains

• Meter (VU) input, output, or compression amount

• Linear, low-noise power supply with toroidal power transformer

• Chassis Depth: 9.25 “ | 23.13 cm

• 5-Year Warranty

Components & Internal Specs (Per Channel)

• True-to-spec 270 volt, 100% discrete analog signal path - handwired with through-hole components

• Transformer-balanced fully floating input and output - Custom-core large transformers from Scandinavian Manufacturer, Lundahl in Sweden

• Premium vacuum tubes

Performance Specs (Per Channel)

• Frequency response @ -3 dB: 5 Hz to 25 kHz

• Self-Noise: < -75 dBU @ 30 dB gain

• CMRR: > 60 dB @ 10 kHz

• Ratio from 2:1 to 10:1

• Variable Threshold: Off to -40 dBU

• Continuously variable, fixed, or fixed/manual attack and release times

• Fixed - Attack: 1 millisecond | Release: 50 milliseconds 

• Manual -  Attack: .5 - 300 milliseconds | Release: .05 seconds - 10 seconds

• Fixed/Man mode blends the release times of fixed and manual mode