Preamp Deal of the Century

Hello Simon74,

The Bendix 6106 in indirectly heated.

You guys may think I'm nuts, but I just recently purchased a low-noise pair of EH 6SN7's to try on a lark. One of my '52 Syl "Bad Boys" that I had in place was spitting (it cleared up fortunately).

I have another pair of '52 Syls and two pair of Ken Rads, plus a pair of Tung Sol Round Plates on the way, but I was just curious about the EH 6SN7's.

Well, after about 30 hours of burn-in, I swear, I think they are better than the '52 Syls or the Ken Rads (at least in my system). Excellent, tight bass, liquid mid-range and extened, grain-free highs and very detailed.

I was expecting them to have sub-par bass and to be somewhat etched with grainy highs. Wrong on all counts.

I remember a long time ago, soon after I got my Supratek, I posted an opinion that the rectifier and the regulators have a much greater affect on the sound than the 6SN7's. I am still convinced of that.

I think the EH's are better than the '52 Syls or the Ken Rads, but only slightly so. I have to listen really critically to determine a difference. Time will tell about the Tung Sols, but I know I won't be buying anymore NOS 6SN7's for my Supratek any time soon.

You guys can all jump in and tell me I am crazy now, but that's the way I hear it.

Fiddler,

Thanks for the report. Is it the Gold or the regular black base EH-6SN7?

I am in your camp also. After trying Sylvania 6F6G's, GEC KT-66, Gold Lion KT-66, RCA 6L6GC Black Plates, and Tungsol 5881, to my ears the Sovtek KT-66 is the better tube. I tried it after reading a post here that Mick recommended it to an owner. The tubes takes a while to settle (50 to 100 hours maybe) but when it does, they are beautiful regulators on my Chenin.

I will order the EH as soon as I see your response.

Thanks again!

Amandarae,

They are the regular black base.

I know they make a gold "pin" version, but I have heard that the gold pins are actually the "standard version" with the pins just painted gold. After inserting the pins into a tube socket once, the gold is supposedly scraped off.

I purchased the tubes from Upscale Audio. I paid for the "Private Reserve" (which might be complete BS), but they are very quiet at the moment. Only $10 more per tube for the "Private Reserve", so why not?

http://www.upscaleaudio.com/product.asp?itemid=53&catid=46

Let me know your impressions. I will be very curious.

I am stunned at how good this pair sounds in my Supratek. Assuming they hold up, as I said before, I have purchased my last pair of NOS 6SN7's. (Well, I haven't heard the Tung Sols yet.)

fiddler:

my chardonnay shipped with eh 6sn7. from what i recall, the sound was really good. my cary monos are also using 2 eh 6sn7's. i am currently running some black glass ken rads in the chardonnay. your post reminded me that i haven't actually done any critical listening between the two.