• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Sonic Frontiers SFL-2 - Schematic / Service manual

Thank you, much appreciated! I just picked up an SFL-2 today. :)
I just got one as well.. After installing the correct coupling caps for my amp... It's as good as I've ever heard any system. I have the SF Power2 for the amp... the input for balanced was at 200k Ω so I first installed at .47µf V-Cap Odam, but I thought I could do better on the bass end, So I went up to a 1.0µf bypassed with a .015µf cap, and it's just gorgeous sounding now... good luck, and feel free to reach out if you'd like any of my takes on this pre and amp... Mickey
 
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