Bit the Bullet ... Don Sachs Model 2 Preamp


So, today I ordered a Don Sachs Model Two Preamp with upgraded caps to drive my 31K ohm SS power amp. This will replace my beloved BAT VK-3i, which I intend to keep ... of course, that could change if the DS Model Two blows me away sonically. I expect to have it in a few weeks. Did a fair amount of reaearch on the DS, and it had great reviews. It's tough to really know unless you hear it in your system. OK ... tell me if I did good on this one. 
rlb61
Am thinking about this pre too, am looking forward to your impressions.
I was really interested in that preamp.  Can't wait to hear your review!
It's been a little over 2 years with my Don Sachs Model 2 Preamp with all the upgraded bells. I think your going to be impressed.
I am also a very satisfied customer and have owned Don Sach’s DS2 Tube Pre and his Kootenay 120 KT88 Amp for 1 year now and love this combo...

I believe you are really going to like your DS2 :)

Wig
I too own the DS2 and it’s met all my expectations and more. Dealing with Don has been a real experience. I owned the SP14 with a lot of upgrades, but had a damn ground hum in the left channel that I couldn’t exercise for anything. It was driving me nuts.. I called Don to see if could maybe shed some light on it, and he had me send it in. I think it took him less than 10 min to ID it and fix it.. while he had it open, he squared it away with Duelund wire Mundorf silver oil caps, Black Treasure tubes, 6BY5 Rectifier Mod. I got it back and was blown way. So much that I bought the DS2 for my 2nd listening room. Again, blown away.. sound stage wide and bowling alley deep. As good if not bettter than my Citation that was twice the price. .. Both were enjoyed driving my Cary 200.2 Power amp. Ultimately, The one he squared away drives my Cary Audio SA-200.2 SS Amp and it’s just killer. The DS2 is slated to drive Don’s KT88 stereo tube amp.. I can’t wait. Don also has freely answered all of my questions, when her didn’t have to do anything more than tell me to “send it in, I’ll get ‘er done” I can’t recommend this dude and his Audio Works enough. https://i1007.photobucket.com/albums/af194/adlerburg1/0FD31DBD-EF63-4B92-9B07-7545F88AE98E_zpsigwapgwa.jpeg

I took delivery of the DS yesterday. Initial impressions ... more height and width to soundstage, more air around instruments and voices, lots of micro- detail, and more [email protected] to my system. No doubt, the "[email protected]" part (in terms of slam and impact) comes from the large output caps running my low impedance power amp and sub. Only have about 6 hours on the preamp, but I like what I hear so far. DS says the unit really opens up after about 50 hours, so we shall see. It's very different from the BAT, but I will not be in a hurry to sell the BAT, if at all. Evaluation periods can take some time.
Looking forward to the next update. This pre is on my list too...
Yes ... it is extremely quiet.
Enjoy, have heard nothing but great things about Don's gear.
I have been considering both BAT and DS preamp, so I will be very curious for a comparison once the DS breaks in.
So, what are your thoughts now? How are you liking the preamp?
I jumped on this boat a while back and haven't had the desire to jump off. 
Adding the right amount of sugar goes a long way. Don's upgrades definitely made it a sweet deal.

Enjoy,








Guys,

I received my modified DS2 last week with Don’s latest Polish made Deulund copy oil caps and 6BY5 rectifier and it sounds amazing! I am hearing more transparency, better sound staging and imaging, more depth, lower floor noise, more air/ambiance. Bass is tighter, midrange is purer/more organic but you are going to be knocked over by its ”HOLOGRAPHIC” presentation; sounds emanating beyond the boundaries of my loudspeakers…

It is astonishing how you are immersed into the music with Don’s DS2 Tube Pre; his original DS2 is Amazing but the updated version is “UNBELIEVABLE”! For those of you who are in the market for a new pre-amp, I highly recommend that you put this pre on your short list. If you already own one of Don’s creations, get this updated version done ASAP!

I am not aware of any mods that can radically change the sound of a system for a very small investment. Act now and get your units in or orders placed soon… 

Wig :)

This thread made me visit Don's page again and I have to say it looks like beautiful workmanship for the money, and the general consensus is that it sounds great.  But what really impressed me is if you own an older component of his and want it with current revisions, the price is more than reasonable.   $75 for a rectifyer upgrade including tube?  That's a bargain.  Pay for only parts after warranty is up? You don't see that too often....I like his straightforward no BS attitude too.  If I were in the market for a new tube pre or amp I would give him serious consideration.
Can anyone share their thoughts about expected tube life for this preamp? Just curious, as I haven't read anything about it. 
I also wonder if using a variac to control and lower the house current (to something like 110) might result in extending tube life.
Preamp tubes will last for many hundreds of hours.They carry a small signal,unlike power tubes.
^^ Make that thousands of hours. We easily get 10,000 hours with 6SN7s in our preamps and Don knows what he's doing- I'm sure its the same there.
Don Sachs here..
Tube life.. well it depends.  All tubes in every piece I build are run very conservatively and not pushed at all.   You should easily get many thousands of hours out of the 6SN7 types.  The KT88 in the power amp should go 2000+ hours.   The old American and Russian 6SN7 types will last a LONG time.   The modern Russian and Chinese tubes.. well it depends.  If you get a good pair, then they also go on forever, but some of the Chinese ones will get noisy.  If you get 100-200 hours on a modern CV181 and they remain quiet, then they should go many years.  Most problems seem to crop up in the first 100 hours.  I play every tube set for 5-10 hours.  If you get a noisy tube in the first 90 days, then of course I will replace it.  To my ears in my system with my gear, the best sounding tubes are the Shuguang Black Treasure series.  Even better than my Tungsol round plates, Sylvania bad boys, National Union black glass, etc... They have about a 5-10% failure rate in that they are noisy.  So you just have to weed out the noisy ones, then they seem to last as long as any other tubes.  The Shuguang Black Treasure CV181-T is about as good as it gets in my preamp and amp.

One other point.  If you spend big dollars chasing down NOS or lightly used old tubes, you will find that a high percentage of them are noisy as well unless you buy them from a vendor who tests for noise.  If you just get some off ebay that were tested on a regular tube tester they will work, but many will be noisy.  Caveat emptor....