Best nos 6sn7g for my Atmasphere mp1.

I have found that the Ken Rads give the best bass presentation but may be microphonic (careful), the Tung-Sols are absolutely the most transparent and toneally neutral, whith mid range that is superb. Sylvania's a a good tube, the RCA's having a nice liquid midrange but can be a bit etched. The Sylvania metal bases are nice to look at but don't offer anything in the way of top notch sound, they are just expensive because they are cool to look at. The Electro Harmonix sound very nice indeed for a new tube at a very cheap price. The 5692 red bases are a nice tube, but don't dissipate the plate voltage (heat) required for the application in Atma-Sphere amps (much shorter life), so try to stick with 6SN7 GTB's as best you can. I am using a combination in my M60's: KenRad in postion #1, Tung Sol in #4, and a pair of RCA's (or Sylvania's) in the middle positions. Hope this helps, FWIW. Asking Ralph Karsten (at Atma-Sphere)for his opinion would also be a good idea. Happy Listening.

I believe the previous poster failed to notice that you're requesting MP-1 recs. I have an MP-1 paired with M60s and have found the Sylvanias to be my preference in the MP-1. Do yourself a favor and get in touch with Andy @ Vintage Tube Services and do it soon as he's closing up shop pretty soon. Discuss your sonic priorities and he'll take it from there. It may take a few weeks but you'll get the real deal NOS stuff graded expertly by a pro. Nuff said.

Acresverde writes:

get in touch with Andy @ Vintage Tube Services and do it soon as he's closing up shop pretty soon.

Really? That will be quite a loss - Andy has sold me excellent valves.

Regards,

Andy is the best. He sold me many a fine tube, especially 6SN7s. This is a huge loss for tube audiophiles.