[Sarchi]

SOLD

SOLD

Offering a very nice SET power amplifier, beautifully built by Oliver Sayes. In his own words: "This is a very highly regarded design and for good reason, sounds incredibly natural and musical. I opted to use 6j5 for the input tube since good versions of these are far superior to 6sn7. The 6p5 could be used in this position for even lower gain. All good quality passive components (Riken resistors, Elna capacitor, paper in oil coupling capacitors) and some choice vintage parts (Sprague paper filter capacitor, Ohmite wire-wound cathode resistor) wired in Kimber copper and with vintage Tamura output transformers. Comes with a full set of tubes, Sylvania 45s, same construction 6j5 (labeled Sylvania and Motorola) and RCA 80 rectifier. This is a very low gain design so I would suggest 100db efficient 8 ohm speakers if you are considering this."

Choke-loaded, fully tube-rectified, with fuse protection, and soft start circuits to prolong tube life. This amp is like new, I bought it in March from the builder himself, and it has maybe 40-50 hours on it (the tubes may have more). It also has a headphone output on the back, but no volume pot. The Tamura o.t.'s are pulled from a vintage Japanese reel-to-reel deck.

Due to unemployment I'm forced to sell some things...all my gear is in perfect working order, so my loss is your gain.

[Whitese]

wow, that is nice!

[Sarchi]

The original Jeff Korneff amp sold for $1700, I believe, and was considered a bargain. More demand than he could supply.

Oliver is a talented builder, and does it for fun. I'm also a diy enthusiast and am not profiting on Oli's work here. I paid $700 for the amp and would like to get the same.

Here's another pic.

[genjamon]

You say this is very low gain. How low? Trying to think whether it would work with my Tekton Lores.

[Sarchi]

The Lore is listed at 98dB sensitivity. I used this amp with my Lowther DX3's which have the same rating. I have a 16 x 24 living room and I've had no issue with having enough gain. That said, everyone has different expectations, music preferences, etc.

[Sarchi]

Bump...amp still available to a good home.

[playntheblues]

How many watts are these baby's putting out?

[Sarchi]

I believe the 45 tube is capable of about 1.5 watts before overload. (hey, there are even lower power tubes being used out there!)

So with the lower gain 6J5 input tube, maybe 1.2? Us SET guys eschew measurements, we do that with our ears. 

[Quiet Earth]

The amplifier (the 45 tube) should still be able to deliver close to 2 watts with a single stage triode tube such as the 6J5. You will just have to drive the 6J5 harder than say, something like a 6SN7, which is a dual triode normally connected in series to double the gain.

So, the output power in watts should be the same, you will just need more gain from your preamp with a 6J5.

   6J5 = active preamp territory
6SN7 = passive preamp territory

Nice looking amp. I am tempted but I already have too many toys.

[mink70]

Hi, is this still available?

[Sarchi]

No, I sold it.

[ClefChef]

This does not even look like Korneff...