hello all I just bought a WA22 2nd Gen. Happy to confirm that wa22 now really can well drive HIFIMAN HE1000 v2。 I notice that the stock 5ug4 tube is a russian tube, the sonic performance isn't that nice. However the stock Raytheon 6080 and Sylvania 6SN7 do sound better. Replacing a decent...

I have come to settle my WA33 with following tubes: 4* RCA NOS 2a3 tubes, bought from wooaudio (very expensive!) 1* KR AUDIO 274B (bought from www.thecableco.com) 4* EH Gold Pin 6C45 (bought from wooaudio too) I like this combo of the tubes. They work together to deliver a sound what is very...

I just received my wa33 and just set it up yesterday, first impression - it's a solid unit. but the stock 2a3 tube isn't good for my ears. I need to find better tube to replace them.

what a life, listening to music via WA33 in a wine loft. :)

I have been driving abyss 1266 phi recently with WA22. It works, although the volume must be increased, usually I need to adjust the volume knob to 2 o'clock position in order to get decent sounds on Abyss.

the usaf 596 tube is a fantastic rectifier for WA22! get one for yourself!

hello, TomSix can I use 5692 tube to replace 6sn7? thanks for your reply

Gosh, I just bought WA5LE, then there comes WA33.... the road to perfect headphone sound is cash-sucking.