luvdunhill

looks amazing Steve!!

I think we are a dying breed.

jp: did you ever get a hold of a modded Museatex DAC? If so, what did you think?

especially the yellow RT. Both Charles Hansen and John Curl say they're the best caps they've heard. I tend to agree.

cool. if you happen to get a dud or random extra tube, I'd be interested in using it to test my psu

bump. So, I got the following for 2 tubes Earl mentioned: 6c33 12.6V => 2.8A-3.6A 6.3V => 5.6A-7.2A 6528 6.3V => 5.0A nate, you got anything to top that for the menace?

where's pabbi1 these days?

press Mikhail on what he means by this, as there is still AC I'd wager... not B+, but AC heaters nonetheless.

I think a 100% DIY rig is minimalist. At least, that's what's looped on the recording that I put under my wife's pillow at night

I'd like to say 2008 is the start of the stat dynasty

I'd still like to see a picture of the critter. I'm finishing up an external heater supply that can supply 2 x 7.5A of DC filament current and has a 6.3 and 12.6v switch, so I can have switch these supplies independently. I'm tentatively calling it "the bench warmer", for obvious reasons. I considered working in an external pass device to go even higher, but I'm not sure if it's needed... so, the question for Earl and Nate: What tubes have you run across with the most demanding heater requirements? I'd appreciate a heads up so I can decide about the pass device someone soon. I'm most interested in tubes that have high current requirements that don't have center tapped heaters, since in this case I'd use the lower current option, since I can.

nope neither do. Probably Esoteric / TEAC you're thinking of.

They come free of charge with the caps ........ (bad joke) anyways, those *are* the caps..

nate, just to point something out... the Plitron transformers that Mikhail uses are potted / encapsulated, so what you see on top of the amp is the toroid itself, not a cover or something.

I know this place where I can get a pallet of those for like two dollars each...

honestly, I don't care what the guy does... it's magickjzs alright.

The Plitron is still there sitting on the amp.. That's like a $350 trafo....and nuthin' but fo' sho'? I need to see pics of the psu..... time to pull this one out:

well, notice the 1.99vrms on the *balanced* output, so not as much gain is required as you might think.

that $$ Plitron is for show then, relegated to a bling heater supply? any pics of the psu? It's probably not AC, rectified and smoothed would be my guess.

Muse / Kevin Halverson uses some other gadgetry in there as well. Check out that article I posted, near the end for the technical description... also, what does "best I can do" imply? That passive I/V sounded best with the 1704? I'd agree with this statement if so.

I think now is the time to contact a builder. There are a million ways to go about this. I'd do something like a Twisted Pear DAC and use the Otto to allow you to toggle between the internal DAC, and a second input which could be from an external DAC. I think this is pretty nifty myself. If you use the Twisted Pear Joshua Tree for an attenuator, you have a ready and willing power supply for the DAC. Or, use a second secondary on the trafo for the JT to power another small PSU. Again, I'd start "interviewing" builders, and choose one you can trust and let them run with it.

Vicki: Do you have any pics of the Singlepower external power supply unit, the jack and what not? This is purely for purposes. Looks like Mikhail is not using the DC power jacks any more (good move), as I assume this is for the tube heaters only?. Is the external psu just a standard power brick of sorts that's been reterminated with that Neutrik connector? Does the amp work without the external unit plugged in? Is there a voltage selector on the unit? Sorry for all the questions, this is the first time I've seen something like this on a Singlepower, so I'm geeking out about it

Filburt/Pars: My Muse uses quad PCM1704+DF1704 with passive I/V. Here is one write-up with good measurements: http://www.museelectronics.com/HFN_Jan.pdf

I thought they used passive I/V. Do you have any pics handy? I suppose I can crack the one open down the street and take a look.

The current version is Mk3, as I know someone in town who just got a Mk3 back from Krell. Excellent customer support, at least in his case. Amazing sounding player, IMHO.