The PC-2A is a compressor based on NOS USA manufactured
subminiature tubes in a limited run pedal of 100. Here's all the details directly from Effectrode...
Musical, natural and quiet - the PC-2A is the world's smallest and toughest hi-fidelity photo-optical tube compressor pedal. It's pure analog circuitry is made from the 'right stuff' being built with a high quality photo-cell and NOS (new old stock) tube, just like the best high-end vintage gear found in many professional studios. Operating at real tube amplifier plate voltages the PC-2A has stacks of head-room and a low noise floor ensuring fantastic dynamic range and outstanding sound quality. Features
All Tube: 100% pure analog vacuum tube audio path for maximum signal integrity and hi-fidelity sound reproduction.
A-weighting filter response: A-weighted filter in the side-chain replicates the response of the human ear and allows for heavy compression without the excessive 'pumping' normally associated with compressors processing low-frequnecy material, for much more natural and musical effect.
Photo-optical gain control: The gain control attenuator is based on a CdS photocell which ensures the absolute minimum of distortion is introduced (much lower than V.C.A. and F.E.T. designs). Additionally, the natural decay characteristic of the photocell produces a smooth two-stage release characteristic which always sounds pleasing and natural to the ear as it eliminates 'breathing'.
Deep Carmine Red L.E.D.: Indicates if the effect is engaged.
True Bypass: With Effectrode's unique 'anti-pop' or 'thump' footswitching circuitry utilizing sealed, gold-contact relay to eliminate the possibility of dirty contacts degrading the sound and minimial internal audio path.