He upgraded the caps, improved the regulated filament supply, and modded the hole for the rectifier tube so it can accommodate a 6BY5 tube.
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
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- 138 posts total
@firstgrowth that should improve sound quality quite a bit. Surprised it was finished so quickly. Hope you post updates on the sound improvement. It is always interesting to read about the changes. Thanks, aldnorab |
Ok, first impressions since upgrade AND installation of my new Weiss DAC. Background is blacker, more detail (that's the DAC and the upgrades. There's a drop of tube noise but considering there are at least 15 in the signal path it's not a surprise. Soundstage has gotten deeper and higher. I'll give it a bit of time to run in and post again but I'm sure the upgrade path was the way to go. |
@firstgrowth good to hear. It is always nice when upgrades move the sound in the direction desired. What 6by5 rectifier tube did Don send with the update? Weiss makes great DACs. What were you using before? Please keep posting updates. Thanks for sharing, aldnorab |
Before the Weiss I was running everything through an Oppo 205 upgraded by ModWright. The Weiss is a considerable step up, everything is faster so notes on complicated passages stay individual and precise. Friday Night in San Francisco is a great example. Al DiMeola plays so fast it used to blur the music to my ears, with the Weiss it's a whole different story.
I'll check on the tube he sent when I get home. |
- 138 posts total