Don Sachs Owners Thread


A place to discuss amps, preamps, and phono stages from Don Sachs. 

 

I just purchased a like new D2 linestage. It has 2 gain controls, 64 step volume control, and digital volume readout. It is set up for the new rectifier. This is my first 6sn7 based linestage. It came with Ken-Rad Vt 231and gray RCA tubes. There are 3 rectifier tubes. A huge Philco 6BY5G, a Tung-Sol 6BY5G, and a Bendix 5852. There is also an Ice Age Audio power cord. With 2 different sounding outputs there are a lot of options. I need to find out what value the output caps are. I have the D2 connected at the moment to a VTL ST150. Input impedance is 125K and 2v in for maximum gain. 

I placed the RCA tubes in left front and rear and Ken-Rad in the right. Used Philco rectifier. Plugged VTL amp into output 1. The brightest sounding preamp I've ever heard. It was comical, bass drums sounded more like cymbals. Output 2 sounds like normal music. This surprises me. With 125K input, I thought there would be no problem getting bass response. 

Some questions.

1. Are the 6Sn7's in the right locations? I guessed by looking at the sellers photograph.

2. Is the Ice Age Audio the AC cord the brand Don offers as an option? 

3. I'll audition all 3 but which rectifier would be considered tops?

The linestage sounds amazing. 

Thanks,

aldnorab

aldnorab

Showing 3 responses by jackd

And that is the difference between the two combos. When you are matching tube preamps with amps and speakers you have to take into account the total gain of the combo or you will get hiss. If you have to get to that close a distance to hear it then it shouldn’t be a problem since we don’t listen at 15 inches. It’s not just your Wilson’s it would be most any speaker close to or over 90 db. Ran into the same issues with my Sachs matched to certain amps with my 90+db Verity’s. You can always contact Don and see if he can lower the gain.

Depending on the input sensitivity/gain of the Cherry amps with the 18db gain of the Sachs and the 91db efficiency of your speakers what you are hearing is normal. Especially if the input sensitivity of the amp is under 2 volts.  

If those Ken Rad's are in fact from 1943 then they are the same tube as the VT-231's which was the designation for Military tubes.  Same tubes different badging. That would make them 6SN7GT's for normal sales channels. The fact that replacing the other pair of Chinese tubes with any good quality NOS tube improved things is not a surprise.  I found the Shuguang's that came with my DS2 and the Linlai's to be a big disappointment.