- 56 Posts. Joined 2/2013
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get the WA6-SE, i currently use it for the He-500 and loved it for beyerdynamic headphones in the past. (770/990/T1). works great and you have plenty of options for tube rolling as well (sophia 274b and 6DR7 from woo audio seems like a good choice). stock tubes are ok as well though.
i dont think the WA6 would be able to power the HE-500 well, its a good amp but not as powerful as the WA6-SE. might struggle a bit with HE-500. as for the WA3, very bad choice for He-500, good choice for dt 880.
Currently listening to them on my starving student (alternate BOM) and loving life. I have also done the jergpad mod on the cans and highly recommend it. I also highly recommend listening to Trampled by Turtles :D
Opera Consonance Cyber 20?
I'm very happy with it (driving HE-500s and HD600s). You should upgrade the stock tubes, though (Mullard on the input and Psvane on the EL84s works well).
If you want a tube amp to drive both high and low impedance cans, you'll have to focus on transformer coupled designs or hybrids.....