Congratulations. I also run the DAC3 balanced to the WA22. It's a dream combo and I have currently suspended all search for desktop gear. Completely satisfied with the combo driving my dynamic HP's. However, I will say that my PM's sound outstanding straight from the HPA2 (seems to be the...

The Sabre DAC chip in the WA11 appears to be similar to that of the WA7 which I found lacking. Any comments on how they compare? Also, any opinions on how the WA11 sounds powering PM's, more specifically, Aeon Flow Closed would be greatly appreciated.

Isolated the hum to EH drivers. Swapped those out for Early Russian 6sn7's and achieved silent background. Rolled TS 5998's back in for stock RCA's and got hum back. Currently loving tone and timbre with WE 422a, TS 5998's, and Early Russian's. Got treble and bass extension, midrange clarity...

You're right. New Year. New rig.

Do you recommend the 6BL7's only as a quad?

Been listening to the WE 422a and 5998's with stock EH drivers. Getting the treble extension and sparkle I desire plus overall 3D staging via Utopia's. The 60 hz hum in signal chain is louder though. Wondering if the larger 5998's are contributing to that. Also concerned about rolling a higher...

Less than 2 months and never looked back, huh? Guess we can throw diminishing returns out the window after $4000 HP's and $2000 amps. Congratulations.

Find a tube combo (driver, specifically) you like best for the Stellia?

Curious what you settle on. Just picked up a WA22 this week with stock tubes to power my Utopia. Will be rolling WE422a and TS5998's first (arriving next week). 5998's might be to hot for the phones but couldn't resist all the great reviews.

How are you liking the combo with Stellia? I can tell all ready that the Utopia and WA22 are going to have a long, adventurous, and passionate relationship that may require some periodic counseling.

Using stock EH 6sn7's. Hadn't considered how sensitive the Utopia's are when purchasing the 5998's. I haven't come across any discussions of gain staging on this thread. Any thoughts? Currently my volume setting runs around 0930 on the WA22 pot for Utopia's and 1030 for the Aeon Flow's . I...

Couldn't help myself. Ordered the WE 422A as recommended along with a pair of the Tung Sol 5998's. Hope the marriage works. Quickly became disenchanted with the timbre and resolution of upper frequencies with stock set up.

The hum via Utopia's is constant from the moment amp is turned on. Not audible via planar's for obvious reasons. I'm hearing a different, independent hum outside of HP circuit, audible to naked ears only after amp has fully heated up. I've yet to receive the replacement tubes from dealer...

Any other WA22 hum after full warm up? Not referring to sound via HP. Outside of phones, somewhere on the amp.

That's generous of you. I know this is has the potential to be a long and winding road.

Hey, BillinSF. I was hoping you would share that posting with me as I am a proud new father of a baby WA22 that I brought home yesterday.

Thanks, Leftside. Utopia's and Aeon Flow Closed for HP. Audioquest NRGX 3 prong for power cord. I picked up the WA22 yesterday as a super clean floor model at local dealer. I've contacted the dealer, and he was more than eager to order a fresh set of tubes from Woo for me to try. Great to know...

Hey, guys. Have been a fan of this thread for a while and have read every post. Still trying to determine if the low 60hz hum via hp's is an expected outcome of the WA22 (1st gen), stock tubes. Granted, the hum is very subtle. Noise floor is affected, regardless. I'm coming from a dead silent...