Gear Hunter

Accessories Included: HAS WOODEN BOX

The LAB is an optical compressor. It uses custom optocouplers to achieve up to 30dB of musical-sounding compression. The essence of the LAB's sound comes from the fast attack and slow release times of the custom optocoupler. The optocoupler's behavior is quite complex, and program-dependent. It can't be modelled with simple resistor-capacitor networks. Union Tubes and Transistor wanted the pure response of the optocoupler to define the LAB's dynamics, and not supplement that with RC filtering.

To that end, Union tried out just about every off-the-shelf optocoupler on the market, but ended up designing and manufacturing their own custom units. There's an interplay between dynamics, noise floor, distortion, and available compression on the one hand, and the opto's electrical parameters on the other. Since nothing commercially available fit the bill, they built their own.

With just two controls compression and gain make-up the LAB is fast and simple to use. It sounds great on bass and electric guitar, and the noise floor is impressive quiet enough for studio use. It really shines on acoustic guitar, vocals and drums.

Specifications
Power Requirements: +9VDC @40mA
Input Impedance: 1MΩ
Output Impedance: 100Ω
Frequency Response: 20Hz20KHz 0.1dB
Maximum Input Level: +7.5dBu
Maximum Output Level: +10.0dBu
Compression/Gain-makeup: 30dB
Noise Figure (Rs=10K): 3dB