I’m running 30v rails, and had noise from protector board regs as well. Solved it with 1k resistors between the 30v rails and the protector board. And run its ground to star ground if possible. No noise even with high sensitivity cans now. Note cable management in psu case is not complete, and...

Great, thank you! I’ll see what I can do about mounting to side panel.

Can I get away with this method of heatsinking for the grlvs? I plan on running 8ohm speaker loads. I admittedly have only tested with 50-600ohm headphone loads, but the small sinks I had on the grlv's barely got warm at all. Maybe 105*F max. I have 100VA 30v transformers. I seem to recall...

Your build looks amazing! For what it's worth, my 30v dual mono CFA3 Tube Hybrid was able to hit around 2.5v of input before distorting. (2x grlv@30v(100VA each) > 4x CFA2 boards + 2x of Kevin's "ubal2baltube" tube input boards (also at 30v). 1x grhv100/6.3 power supply and matching toroidy...

Can any builders offer their input on my layout before I start drilling? Amp: Left or right? Input comes in the middle, so figured I'd go right down the middle to the vol pot. Which layout is best? Power Supply: The center transformer will interfere with the rather deep power switch if I push...

Thought I'd drop my progress on my Dual Mono CFA3 Hybrid here. Just a one-off for personal use. I'm a music electronics tube amp tech mostly. Anyway, getting close to completion. I've got it working and blowing my mind daily, but still a mess on my desk. Needs to go in the modushop chassis...

Latest iteration.

Hello, Relatively new here. I'm mostly a guitar/bass tube amp tech/builder but dabble in HIFI. I'm building a CFA2/3 (not sure if I'll add a bal/unbal board eventually). Dual Mono, 2x GRLV, 4x CFA2 boards, and maybe a bal/unbal down the road. I plan to use this with my LCD-2's (orig), and my...

New member here. Lurked for a while, now ramping up a Kevin Gilmore CFA3 build. I'm a small elec tech that specializes in tube gear for musicians, but dabble in hifi. :)

New member here. Been a music electronics tech and musician for a couple decades or so. Love building and modding gear. Hope to contribute and enjoy.