• 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.

DIY Tube headamp amp advice

Built Crack OTL and love the sound (no upgrades or speedball).. moreso than my Elekit tu8600S, audio gd he9 and even my ARC ref 5se + pass x350.8. I want to continue to explore this warm euphonic mid forward 3d holographic sound. I am going to get in another Crack OTL already made with speedball (just because of the longer wait from BH) and going to play with that and mod it. This is for HD650, ZMF atticus and HD800S.

But I am also interested on a more custom project that takes this sound further (I am not really chasing detail more just tone, euphonics and staging). Is there a specific circuit design you guys would recommend I start from and slowly start to build ? I have no specific budget but I guess ideally not more than $3k in parts cost (willing to go higher if need be). Looking for an amp that can compete with the big boys as well like DNA stratus/stellaris, Apex Teton etc.

One recommendation I was given is this OTL amp: https://www.head-fi.org/threads/pete-milletts-menace-revisited.900324/

Thanks!