luvdunhill

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.

found a review for you: Krell SACD Standard "Mark II": Impressions & Review. Pics! - SH Forums

why not just do a poll of what players people currently own, and then choose the most popular?

oooh another recommend what you own thread... in which case, I cast my ballot for Muse Electronics, i.e. Model 12, Erato II, Polyhymnia if you need SACD...

are hi-rez formats of interest, or would a red book only player suffice? Any interest in a transport and DAC combination?

eek... the Mac geeks are descending I understand Apple is pretty serious about this, but then so are they about security and I'm on the phone with them *weekly* about new vulns in their software I'd be interested to see some measurements myself.

sure about that? http://www.diyaudio.com/forums/showthread.php?postid=1484189#post1484189

grawk: I'd strongly recommend something with a higher bias for the Koss. If you find a SRD-7 I'd consider doing the modification for you, as it would give me a chance to design a little board that might fit in there for future retrofits. Spritzer: I'd be interested in the cost on those transformers, at least.

Spritzer: any recommendation on cheap trafos for the DIY option?

yeah, they shipped my order incomplete, as the lead time for the r-core is like 2-4 weeks... for me for you.

K240S is what he has currently. Will those velour pads fit, despite the ominous warning on Headroom?

I'm going to have my PPAv2 up and running again real soon and up with me at work... wonderful little amp, and best opamp-based amp I've heard period. If you build one, feel free to ignore all part recommendations and just tweak until it sounds good. For example, I'm using some Xicon polypropylene caps that I haven't seen anyone mention round these parts... but they sound fantastic in the PPAv2. Same with the yellow ERO axial capacitors I'm using. Perhaps I'll post pics when it's all said and done!

a secret at least until I can get more of those little black boxes... in all seriousness, I'm thinking of making a small PCB that will house a transformer, simple adjustable regulator circuit and the DC-DC converter. I just wanted to find a footprint that would fit in an energizer before I went forward, as I figured this would have a lot of use. If anyone could help me out on this front, it would be much appreciated

Spritzer: Would it be possible to stuff the goods into an energizer box of some sorts? My layout is rather long, but I'm betting it would be possible to stack the two components and save some space.

trade secret

Nice tuner, especially if you paid $25 for it

joy? more like a curse.... heh.. well-said though.

those remind me of old TRW caps... Someone with a few more grey hairs / soldering iron burns should comment.

lol, even Stax is running out of the dual parts

I'd be interested in knowing how this can be done (safely)