I need a quiet tube amp

Tomyran,
You have probably explored this option, but on my Wright Mono 10's I used a 3-into-2 prong adapter, and the hum disappeared almost entirely. With his 3.5 SET amp monoblocks, I found that the hum through the speakers had mostly to do with the quality of the 2A3 tube I was using. When I found an excellent NOS tube, the hum was reduced dramatically.

If those suggestions--and the ground loop check--don't work, I would take the amps to a tech and have them checked out. If there is no issue with the amps, it may be a problem worsened by the 2A3's being used.

Hope my amateur advice helps.

All the best,
Howard

Tom: What's your price range? I have had two different ASL integrateds: An MG si15 and a FOX Ki22, neither of which would be a good match for your Proacs. However, they make some other very powerful amps, but the 200 watt hurricanes are about $5k!

You simply don't have enough headroom with a 300b amp (about 8 watts). With your speakers, I would want something like a VTL ST-150 or a pair of Rogue 120 Magnum monos. That's a lot of juice, and I'm willing to bet you a burrito that your Proacs will let you hear things that you never thought possible!

Tomyran, I don't have issue with Sun Audio SV2A3 in my setup ( I borrowed this amp from a friend of my ) Definitely no buzz or any noise. with my Citation I preamp.
I'm using it with Jensen coaxial speakers and they sounded fine except for the bass. I prefer deeper and larger volume of bass from that 2A3.

Tomryan,

I do not know how a 300B amp compares to my Audio Note Soro SET amp that has 6L6 output tubes but my amp is only rated at 18 watts and easily drives my Trente speakers that are rated at 88db - to about all they can handle too. Watts ain't always watts as the Soro sounds like it has about 80 of them instead of 18.

I strongly urge you to look into one as I got mine for only $1300.00 and it has a terrific phono section as well.

just my 2 cents...

Phil

My Klipschorns are efficient and will present the noise of components ahead in the chain. Today, I am running two older units: Conrad Johnson MV75A1 tube amplifier and a Marantz 7T solid state preamp. There is some low level residual noise in the MV75A1 when played without the preamp being powered. When the 7T is powered, there is slightly more noise ... mostly hiss. To hear the residual noise, one must be within 2 feet of the mid/tweeters. Beyond 2 feet, the noise is not audible even beween tracks with the volume at near pain levels.