CD has laid back and uninvolving sound

TJ, with all due respect, I think the tube issue with the AA Tube DAC is an important point that needs to be addressed, however you shouldn't overemphasize it either. To be honest, I'm not going to change any tube --> too much hassle for me. I like a unit that is just "plug and play" and not one that has to be tweaked first before it sounds good. As mentioned ealier, I'm gonna try the JMF Audio DXC2.2 DAC soon and I will report the findings.
Btw, the DXC2.2 DAC is similar to the Rey Audio DAC from Japan.

Chris

"If the capacity or resolution of CD is indeed inferior to the vinyl, there is no way that a CDR of vinyl will sound the same as vinyl. I think you have just proved the exact opposite."

I haven't proven anything...just stating an observation.

The sampling frequency or resolution of CD is beyond the range of human hearing.

There is no equivalent measurable resolution with analog that can be compared apples and apples as far as I know. It's a completely different beast.

Dazz,
I'm pleased to know you do have a decent vinyl playback.
I fully understand wanting more out of one's CD collection (Metrella).
For my money, I'd just accept CD for what it is- limited, IMO.
A bird in the hand (LP) is worth 10 in the bush.

No offense to you Chris, but after spending alot of money for a world class reference DAC, to leave in crappy tubes made in China is pretty stupid/silly to me. What's the "hassle" about six screws and putting in two tubes?

I also believe you are way understating the importance of how the AA DAC performs depending on what tubes are being used. So, if you think tweaking means changing stock crap tubes with musical NOS bottles, then do yourself a favor and stick to SS pieces. I also recommend you don't try different power cords, footers, isolation devices because these are tweaks that also would be to much of a hassle!

You also did not comment on what clamp you use or what digital cable, which could be an important set of factors. On the other hand, useing the stock tubes probably makes these other factors mute anyways.

Teajay- I didn't want to press the issue, given his negative reaction to the suggestions made. But, AMEN!! The correct NOS tubes(and other mentioned tweaks) can/will/would have a profound impact regarding the sound qualities he's seeking. Well- At least: They did in the last three DACs I owned, and the CCa's do in my BAT VK-D5 now. Everyone has their own set of values and personal limitations though. Happy listening!!