This is what Jack told me via Email.
Hello Charlotte,
The WA2 drives very well with many low impedance headphones, especially when the 7236 tubes are used. Tube life has no relation to what headphones to use.
The WA2 sounds smoother, warmer, and silkier compared to the WA6SE. The 6SE is neutral, fast speed, and great attack.
Thank you,
Jack
But then again , does anyone have ever tried W5000 with both WA2 and HA5000 ?
If WA2 can give the sound like HA5000 but pull mids back a little , that would be great
Edited by HeavenAngles - 7/7/10 at 12:41am