jkeny said:
jkeny said:
If this is the amp that I heard in Portland during the week of VSAC08 , "clean" wouldn't begin to describe it. There was opportunity to hear some very interesting gear at the show, but this is quite simply the most visceral and concurrently invisible amp I've heard in 45yrs of listening.
With that special CD of live broadcast feed of "Carmina Burana", I have no words to describe the experience, other than transcendental and paradigm shifting. Of course there was a lot more of Gary's soul and brilliance in the system than just this single piece.
Yup, it's a toaster alright, and probably not appropriate for any less than a very accomplished builder.
I didn't know GP was at VSAC08. Did he have a room or was he in with somebody? I know John Swenson was there with his BDT preamp (which uses some of GP's CCS circuits).
Did the amp look like the attached - this is the "Big" amp version (25W) & here's his description:
I may just go with the "little brother" version which outputs a clean 7W. I wouldn't consider myself a very accomplished builder but i can handle the high voltages and have successfully built a couple of his CCS on veroboard. This amp is just 6 of these modded as pentode emulators.
Chris, tell us more about the GP equipment you heard, please
Did the amp look like the attached - this is the "Big" amp version (25W) & here's his description:
I may just go with the "little brother" version which outputs a clean 7W. I wouldn't consider myself a very accomplished builder but i can handle the high voltages and have successfully built a couple of his CCS on veroboard. This amp is just 6 of these modded as pentode emulators.
Chris, tell us more about the GP equipment you heard, please
Attachments
Gary attended the show, but didn't display product.
Thanks to Bud Purvine, it was a too-short visit to Gary's secret lab in the heart of urban Portland that resulted in this epiphany. Due to Gary's rally-class driving and the crazy traffic, I doubt I could find my way back even with a GPS - but then my brain was still trying to process what I'd experienced, so I'd probably have been a traffic hazard in my own neighborhood.
As for the system, I don't recall too much discussion regarding the transport ( IIRC, a generic CD or DVD player) and DAC. The "pre-amp" was a passive transformer volume control unit, with dual outputs to the Tabor running the dual mids and ribbon tweeter with passive XO, and Behringer XO, the latter driving another generic SS amp (Parasound?) to the subs.
Needless to say the name plates on any of the equipment not handbuilt by Gary were probably meaningless anyway, as they were all highly modified, including more than a few pieces of O'Netic iron.
Thanks to Bud Purvine, it was a too-short visit to Gary's secret lab in the heart of urban Portland that resulted in this epiphany. Due to Gary's rally-class driving and the crazy traffic, I doubt I could find my way back even with a GPS - but then my brain was still trying to process what I'd experienced, so I'd probably have been a traffic hazard in my own neighborhood.
As for the system, I don't recall too much discussion regarding the transport ( IIRC, a generic CD or DVD player) and DAC. The "pre-amp" was a passive transformer volume control unit, with dual outputs to the Tabor running the dual mids and ribbon tweeter with passive XO, and Behringer XO, the latter driving another generic SS amp (Parasound?) to the subs.
Needless to say the name plates on any of the equipment not handbuilt by Gary were probably meaningless anyway, as they were all highly modified, including more than a few pieces of O'Netic iron.
Tell us what you heard though!!! Edit: Cross posts - so it doesn't seem like this amp was featured in what you heard? Sorry, I reread your post & see the Tabor mentioned!
Also, I was thinking of combining John Swenson's BDT preamp with interstge trafo with GP's SS Tabor output stage.
Does anybody think this is a runner?
Also, I was thinking of combining John Swenson's BDT preamp with interstge trafo with GP's SS Tabor output stage.
Does anybody think this is a runner?
jkeny said:
The amp I heard definitely looks like the one pictured, but I'm far too experienced to suggest it would be a magic panacea to an otherwise poorly implemented system - which I don't think Gary could assemble on a bet.
Soundstage that easily expanded beyond the boundaries of the room, and effortlessly real dynamics, without the major colorations of large horn based systems that were available to hear at VSAC.
Depth and layering of voices in that absolutely stunning recording of the Carmina Burana that bordered on hyper-realism.
Since I've never availed myself of the opportunity Live performance of a large choral work as this, and had only heard some of what I thought were "decent" commercial recording of this piece, I had no idea the mass and visceral impact it could achieve.
On a couple of recordings I thought I was familiar with (for example Rodrigo y Gabriela "Stairway to Heaven" and "Orion") there were subtleties of texture, timing and space between the notes that just made more emotional sense.
jkeny said:
This is not an official commercial release. If I have my story straight, it was a performance of the San Francisco Symphony and local choirs, broadcast live over FM, as well as recorded for rebroadcast through associated classical music FM stations. The version that I heard was apparently recorded from one of these FM transmissions.
That this degree of astounding fidelity and musicality was available over the air is nothing short of amazing. I love my local NPR FM station (KPLU), who broadcast some wonderful live jazz performances, but nothing I've heard yet approaches this particular performance.
That's very interesting - I've herad people say to me that some FM broadcasts are stunningly realistic but never experienced it myself!
Is this recording available through any, ahem, "unofficial" channels?
So, still no builders of this amp? - I'm sure there are some tube Tabor builders! - I know Shoog has done his interesting version of Tabor clone, which I'm hoping to hear soon.
Is this recording available through any, ahem, "unofficial" channels?
So, still no builders of this amp? - I'm sure there are some tube Tabor builders! - I know Shoog has done his interesting version of Tabor clone, which I'm hoping to hear soon.
Anyway, back to the topic - I know John Swenson has posted here about his solid state pentode preamp which is based on the same CCS building blocks used in the SS Tabor amp but at a lower voltage & current
I'm wondering about the details for a lower voltage version of this power amp concept! Anybody?
I'm wondering about the details for a lower voltage version of this power amp concept! Anybody?
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