This is a Revive Audio Full Modification to the ART PRO VLA Two Channel Tube Opto Compressor. This Unit sounds great and has the fully upgraded signal path, Tubes + Cinemag Output Tranformers on each channel. This thing is in top working order and was recently on the bench at Revive Audio.
Note: This is the 1st Version of the ART PRO VLA 1, which I chose to mod over the v.2 because of it's attack and release times.
From Revive Audio's website:
Revive Audio Modified PRO VLA I, Dual channel vacuum tube/opto compressor. These units sound incredible with our modifications and sound great on Bass, vocals, room mics and much more. There is a nice review on GearSlutz of this model with the Revive Modifications! Audio Samples are also available on our Website under the Modification Tab! So about the improvements: The service increases the headroom of the unit, widens the frequency response, lowers the noise and increases the detail of the three dimensional image. The Modification increases the speed of the attack and release times making these cool compressors useable on a broader range of applications. What we end up with is a Boutique sounding Tube Opto compressor that excels! More Specifics: We perform and number of mods on these units and gut the inside of these units so it is a lot of work, but the results are well worth it. On these units we have modified the input, output and buffer stages with High performance Burr Brown opamps for optimum fidelity. Coupling and de-coupling is also performed throughout the circuit using premium Pansonic parts for better frequency response, lower noise, longer life and more musicality. The Vactrol is changed and the Tube plate voltage is increased to an acceptable level for the circuit. Low noise NOS Vintage Tubes are installed as a finishing touch. These units have been professionally modified by our technicians and given the seal of approval to go to work at you home or in your studio. These are beautiful sounding units with a lot of dynamic range and big bottom end.