vmps, art d/io, & boldercables.com


as many know, i am fond of vmps, & the art di/o dac. well, the vmps rm-40 has won a "best in show" award at the recent ces. and, here's a quote from vmps' brian cheney to wayne, of boldercables.com, who supplied brian w/a modded di/o. wayne charges $200 for these mods to the ~$130 di/o, & having done most all the mods to *my* di/o, i can easily say it's a most fair price! ;~) anyway, here's what brian had to say to wayne:

"...We used the DIO as our digital source throughtout the Show, since we thought the Sig 9 Muse player loaned to us did not sound as good. My transport was my own 10 year old Krell MD 10."

just thought y'all might want to know... :>)

doug s.

sedond
JoeB: You're leaving the tube in for D/A? The tube is for A/D only, and will just draw from the power supply. This isn't a good thing.

Doug: BTW, Thank you. I bought the Apogee cable from fullcompass.com. I'm very happy with it's full freq. extention, it's ability to resolve low level information, and found it to be a very dynamic cable (both micro and macro). I'm sure that the FIM cable is better, one of my friends has their speaker cables and interconnects. However, at less than $30, the Apogee is a steal! It smoked the Monster cable that I'd paid around 3 times as much for.
steve, there seems to be a trade-off w/the toob in the circuit - you're correct that it draws power from the p/s, but it also reduces elec'l leakage (i'm sure this isn't the correct technical term!) from the adc side into the dac. best bet is to try for yourself.. some prefer it one way, some the other. if a di/o's only mod is the upgraded p/s, & internal parts haven't been replaced, i'd be inclined to leave the tube in. if lotsa mods have been done, yank the tube...

doug s.

I found that taking tube out of the ciruit inproved both stock out of the box mode and after intesive mods. It just sounded better with the tube removed. Most that I've heard from have found the same.
I pulled the tube out when I first got the dac and out of curiousity, put it back in after a few days. I didn't notice any degradation of the sound putting the tube in, and it "seemed" a tiny bit better, nothing significant, so I have left it in for now. Could also have been my imagination, cycle of the moon, too much wine, etc. I want to try the A/D section soon, also so I will need the tube for that. The Stancor power supply made a noticeable difference, for the better. Ordered some 75 ohm video shorting plugs for it today to see if they help the RFI situation. FYI, if anyone is planning on ordering the Stancor from Allied, they have a $25 min order.
Yeah, I get RFI on ch.9 on my VCR tuner. Moving the DI/O about another foot away helped.