I have gone through a lot with my HRD (it is a USA made early 90s model) modded it a bit, found valves I agree with (6l6 TAD premiums +mid bias, TAD cz in V1, JJ in V2, and another TAD cz in V3). I clipped the brightness on the reverb - and fitted a C Rex speaker - also re-tolexed it in dark red and replaced the mesh with a gold one. I love this amp in all aspects (even the drive channel is perfectly usable - well not the red but the yellow) but one - it keeps developing issues, most recently, V3 started cutting out - I replaced it, but it still cuts to half volume after loud playing - I fear a trace is broken.Bottom line - I just don't trust it to gig with anymore. I wonder if in your collective experience you have come accross similarly thick yet glassy clean - crunch tone animal? I understand it may cost more -as far as I can see Morgan MVP23 is an awesome option, I also like the PRinceton 65, though it is a tad quiet for me (bars with limited PA). I am currently making do with a Bogner Alchemist 1x12 (also with a C rex - the V30 was just harsh in there). So any suggestions are welcome - I am looking to expand my search of reasonably priced used amps and so the more I learn, the easier it is to find a good deal - and I may learn of some new amps in the process.