Responses from donsachs

Klipsch Cornwall IV
interesting thread...I have both Spatial X5 and a new pair of Cornwall IV that I have been playing with the past few weeks. Both are the best speakers I have had the pleasure of living with in all these years of audiophilia. I would be hard presse... 
Preamp or not.
Don Sachs here.  I see above that someone mistakenly things the tubes4hifi preamps are somehow given to me for tweaking.  Huh?   I get the bare board from Roy.  He has changed the board over the years with suggestions I have made.   That is it.  I... 
Tube virgin looking for tube amp under $3k
Don Sachs here.. Whoa, there is a post above that says my Kootenay amp is based on a kit.  Huh?  No way.   
Ice Age Audio Cables Q & A
HiDon Sachs here.  I make tube amps, preamps, and phono stages.   I have been using Rick's cables for  years and my system has his power cords, xlr and rca cables and speaker cables.  I bought all of them, he did not give them to me.   He makes ve... 
yet another tube preamp recommendation thread
If the Sudebaker comment was directed at a preamp, it was made with NO knowledge of the situation.  Guy contacts me that he has bought a used preamp of mine and it is clicking on some volume settings.  He is third owner.  People flip gear, it happ... 
yet another tube preamp recommendation thread
Don Sachs here.  To be fair, I have sent the person above a whole new power supply board for the Khozmo attenuator.  If that doesn't solve the popping we will source a new khozmo board because there may be a bad relay.  I have probably 100 khozmo ... 
Don Sachs 2 vs. deHavilland Ultraverve 3
Ancient thread.... but I have produced an integrated amp.  It runs the 6L6, EL34, and my favorite in there, the KT66.  32 watts/ch.  It is on my site.cheers,Don 
Preamp suggestions, yes again
HiDon Sachs here. I normally stay out of threads, but I just want to clear up the misconception stated above. Yes, my preamp starts with the bare sp14 board. That is it. The circuit is a very good SRPP with an Akido buffer and the first time I hea... 
Considering replacing my Rogue Audio Cronus Magnum with separates.
HIDon Sachs here. I can use any size output cap the user desires. Just that 1.5 uF is the largest of my favorite oil cap that I can fit in the case. I can easily fit a 3.9 uF Mundorf silver oil or silver gold oil in there or even a larger value. I... 
Seriously considering tube preamp…opinions?
Don Sachs here.  Just a note, the preamp is made in Canada, but shipped from my shipping depot in E. WA, so shipping is the same as any US product.cheers,Don 
Bit the Bullet ... Don Sachs Model 2 Preamp
Also, the output impedance is about 410 ohms.  That number is irrelevant.  The only thing that matters is the size of the output capacitor in relation to the input impedance of the following amplifier.  .47 uF will drive about 80K or higher and be... 
Bit the Bullet ... Don Sachs Model 2 Preamp
The preamps with the big oil caps take a good 50-100 hours to run in.  So if you don't have 100 hours on it, you really don't know what it will finally sound like.   cheers,Don 
Bit the Bullet ... Don Sachs Model 2 Preamp
Don Sachs here.  I updated the site a bit.  Never seem to have much time for it.   The current preamp is the new OLED version.  See the site and you will find it. 
Bit the Bullet ... Don Sachs Model 2 Preamp
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+ hou... 
Supratek or Don Sachs - which way to go?
Geez...  I have not heard them..... typed too fast!