don sach's custom kt88 tube amp

Does this amp have enough power to effectively drive Magnepan 1.7 speakers run with dual subwoofers?

Just wrapped up listening to my neighbors new, don sach's custom line stage.  The craftsmanship is just tip-top and the sound is WOW! Very impressive pre amp. now if I can ever get thy neighbor into vinyl 🤷‍♀️

@wig Glad you posted that. I'd just searched "Shuguang WE6SN7" and was missing the "plus" designation on the tubes you were discussing. Thanks.

Here's the link; https://www.audiogon.com/listings/lis9g8j6-shuguang-we6sn7-plus-vacuum-tube-marched-pair-all-new-tub...

Wig

@wig Well damn, I guess I'll have to try a pair.

@ waltersalas

Congrats on an outstanding Combo and they will continue to improve...

@ cal3713

No comparison, the WE 6SN7 are so much better across the board but recommend you try your WE and VT 231 in both pre-amp position because it will yield a different sound.

Wig

@waltersalas Congrats.  Hope it just continues to get better.

Also, can you (or @wig ) report on the WE 6SN7s?  Curious how they stack up to the CV181s.  As I mentioned via PM, I like those but did end up using some old RCA Grey Glass VT231s into the buffer tube slots to coax out a bit more smoothness and layering. Left the CV181s in the driver tubes on the left of the preamp...

@wig 

My Kootenay 120 arrived today. It has WE KT88 Plus with CV181s up front. I've had the preamp for a few weeks now. It has WE 6SN7s. It's nice to finally have both the preamp and the amp in my system.

Early impressions are very favorable, to say the least. An incredible blend of power, finesse, and musicality, with perhaps the most holographic presentation I've ever heard. The music is just enveloping. It's like you're swimming in it. The effect is mesmerizing.

I'll spend some time letting it settle in before doing much futzing around, but eventually I probably will try some different 6SN7 tubes just to see what that does. I've had a lot of fun rolling that tube in other amps and preamps over the years.

Looking forward to a lot of late nights coming up!

After reading the Shuguang WE Plus description, I just had to try them and what do you know; a treasure find.

Let me know if you have any questions on tubes selection or placement, you can tailor the sound to your liking.

Wig

@wig 

I will certainly do that. I had Don send the preamp with WE 6SN7s, and the amp with WE KT88s. I have been following these threads on Don's gear for some time and much appreciate your feedback, as well as that of other owners.   

Hopefully, I'll be ready to chime in with thoughts of my own in two or three weeks.

@ waltersalas

You are in for a treat and the combination of the DS2 and the Kootenay 120 is quite amazing! It's going to sound pretty good on install but will make dramatic changes over 75 hours of use.

Congrats and let us know your impressions when things settle in.

Wig

Any more updates on people's experiences with Don's amp and/or preamp? I have had the preamp for about three weeks now, and will take delivery of the amp a week from Monday. It has shipped, but now has to travel cross country. Needless to say, I'm really looking forward to hearing how they sound together. 

I would love to try his pre and amp.  Keep it coming folks! I'm enjoying hearing about your experiences.  

Just spent the last hour catching up on this thread, and AudioCircle, and dsachsconsulting.com
Sounds like the real deal. 

Gents,
I have been using Don's amp in my system for a few months, but with the advent of the 100+ degree weather here in CA, I swapped back my excellent McCormack SS amp into my system to ease the burden on my air-conditioning load, as any KT88-based amp generates a lot of heat.  
OMG, the magic is now gone in my system. Don's amp is infinitely more musical and revealing, with a far greater sense of realism with the music.  It is a night and day difference.  

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 :)

@ whitestix

Congrat!

Wig :)

I ordered Don's amp yesterday.   I am in the queue.  Good things come to those that wait, although it is not my strong suit.  Don told me many times that his amp would be better than my McCormack amp with my Spatial Audio speakers,and I dismissed it, favoring SS amps with Don's preamp.  It was revelation from the moment Don's amp was replaced in my system...   It was exactly as good as he said it was, with a potent grip on the LF that I could not imagine.  So, yeah, I heard it and I bought it.  I know exactly how it will sound in my system.  

@ whitestix

It was your initial impressions on Don Sach's DS2 on Audio Circle that peaked my interest and decided to jump in with both feet and what a discovery...

Wig

Wig, 
Lucky you...  I am 50% of the way there.  :-)

Don Sach's DS2 Tube Pre and Kootenay 120 KT88 Tube Amp is quite amazing and I am enjoying my nightly listening sessions :)

Wig

I have Don's preamp and got a chance to compare his KT88 tube amp to my McCormack DNA .05 (Platinum Version) amp last week in an extensive listening session with my Spatial Audio M4 Triode Master open baffle speakers.  Personally, I hasten to say that the upgraded McCormack is easily the finest amp I have ever heard among the dozen or so I have had over the past 20 years, which include several CJ amps, Modwright, upgraded HK C-II and C-V, Moscode, Plinius, several class-D amps (forget about them!) and a few other decent amps that I now forget that I owned.  

I have talked to Don a lot about his amp and have thought that in comparison to a potent SS such as the McCormack, it would suffer in the control of the LF response.  

 Well, I am delighted to say that the KT88 amp suffers not a bit in the LF response compared to the much more powerful McCormack, which was completely unexpected.  And the HF was as brilliant as with the McCormack.  The most notable sonic aspect of your amp was the fleshed-out spaciousness of the vocals and instruments, a dimensionality of the sound that clearly exceeded that of the McCormack.

Don did the full-monty upgrades on my HK CII and CV amps years ago and so far as much recollection allows, his production KT88 is vastly better.  The amp appears on my volume pot (I have Don's preamp) to have the same SPL at 9:00 as does my McCormack amp, which totally surprised me. It is a very potent amp, but then my speakers present a 12 ohm load so they are easy to drive with a tube amp.

As lovely as the McCormack clearly is, it frankly sounds rather two-dimensional in comparison to the KT88 amp.  Yeah, you buy a tube amp to get that luscious 3-D sound with a roundness to the instruments playing, and the inviting mid-range, and I find, which surprised me, a firm control of the LF response with the KT88 that blew me away -- I have never heard that sonic attribute with any tube amp.  It has all the control of a SS amp, but a vastly better holographic presentation of the music. Perhaps it is cliche to say it, but it sounds so completely analogue in its performance with all the speed and accuracy of a SS amp.  I was enthralled with it in my system.  

I listen primarily to solo acoustic instrument to include Cello, Violin, Guitar, Classical and occasionally Jazz and I have never heard better bass in my system than with the Kootenay 120. The Vitus RI-100 didn't produce bass like this and it was over 350+ watts compared to a 65 Watts Tube Amp with independent and fully regulated power supplies for each channel.

Wig 

I listen to a wide variety of rock and roll, prog rock, Americana, folk, funk, r and b, reggae, some disco, all vinyl. I have a couple of jazz albums and no classical, although both interest me and I see it in my listening future.

@wig and @scarbpaul12 What type of music do you play most often? I'm curious as to whether a Don Sachs preamp is right for me and my very non audiophile approved music.

Thanks Wig, I have ordered Don's preamp and I'm patiently awaiting it's arrival (hopefully early August) So I'm aware of the wait time, and Don was very clear and upfront about it. I'm currently running an Audible illusion mod 3a through a pair of sim moon 400m mono blocks, and I'm looking forward to hearing the Sach pre amp. If I like the pre, I would seriously consider the amp in the future. His stuff seems to check all the boxes.