Warm Audio WA-1B Tube Optical Compressor

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The WA-1B accurately recreates world-class Scandinavian compression, combining smooth tube-optical warmth with precision controls. Like its original inspiration, favored by producers and engineers from Chris Lord-Alge to Rick Rubin, the WA-1B delivers that revered “forgiving” musical compression of tube-optical circuitry with speed and control more closely associated with modern dynamics processing. Hand-wired to authentically recreate the sound of a renowned circuit, the WA-1B combines custom large-core transformers from Lundahl Sweden, select tubes, and a premium high-precision optical element for ultra-fast and accurate operation without sacrificing authentic analog warmth.Features: Accurately recreating world-class Scandinavian compression combining smooth tube-optical warmth with precision controls 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 12AX7 Tung-Sol & JJ 12AU7 tubes Frequency response @ -3 dB: 5 Hz to 25 kHz Self-Noise: 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 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