Yep, it works and it sounds great! A one-off for LBA Recording Studio (new website coming soon with photos). After I finished designing the Op-2 Comp and finished teaching Jon how to build them exactly as I would, I was supposed to get back to work on the Trinity project. I decided to take a slight detour and completely rebuild the control room at LBA Recording Studio from the ground up. lol. That was no slight detour, btw! I have been planning to do this for years. Really, I just needed the time, money, and motivation. It was a huge job that would not be complete unless I built a vacuum tube powered mixing board. Here it is... the Trinity Master Module. Its expandable, so as the years drift on I can keep adding modules to expand its capabilities. The Master module seen here is a 10 channel mixer with pan controls for 8 channels. The other two channels are fixed hard left and right. There's a Master output volume attenuator (Gold Point stepped attenuator), and left/right master trim controls for the tube output amplifier stage. Most of the controls are for the stereo master, which include independent left/right channel mutes, a master mute, phase invert, mono/stereo switch, speaker selector, input selector (external stereo input or 10 channel internal mixer), and output selector (monitor, bounce). The board is powered by the Trinity system's "Beast Mode Power Supply," which can supply power to 4 different Trinity system devices. Right now its powering the Trinity Master Module, the Trinity ARA (Auxiliary Return Amplifier), and a prototype Trinity Channel Strip. The idea is a bunch of Trinity Channel Strips feed into the Trinity Master Module. This is probably the first all-tube point-to-point hand wired mixing board made since the 1950's, but its lightyears beyond in terms of technology and fidelity. The mixer is basically noiseless (-110dB noise floor) and has practically no crosstalk, with a flat response from DC-30kHz. In terms of sound its more punchy and forward than the Flux Bender EQ, but with some of the same tonal qualities. Very clean, but tastefully warm.
About the Author
Mike Congilosi II, Inventor/Engineer