So...I tried it, and it didn't work that well. It played the music plenty loud even at 2V output, but the fine details were missing, and the sound was kind of "muddy/dark-ish". I guess the impedance mismatch is to be blamed. A separate amplifier is definitely the better solution.

Exactly. I don't have an amp for the moment, and it will probably be a couple of months, before I have the funds for one. In the meantime I just have the output from the Computer, which kind of sucks ;-). But I am also interested in the theory of this. You can power high ohm headphones from a...

Since the Daccord DAC has a powerful volume controlled preamp output (6 volts on the highest setting), I'm toying with the idea of connecting my headphones directly to the RCA outputs. The input impedance of the Classic amp is 18 KOhm, and my phones have an impedance of 38 Ohm...quite a...

Maybe this can help?  http://www.ebay.com/itm/Headband-Cushion-Pad-fit-BEYER-HiFiMAN-DENON-SONY-KOSS-BOSE-BEATS-DRE-Headphones-/200799150982?pt=US_Replacement_Parts_Tools&hash=item2ec08fe386

  Here´s the inside of the Hap-100. A nice PSU on the right, and the actual sound board on the left.     The Hap-100 is $595 and the HA-200 is $349. I´m a bit worried about, how much amplifier you can actually get nowadays for $349?

The current drive is getting popular for driving headphones. But as opposed to the Questyle CMA800R or the Bakoon HPA-21 the pricing is very low. I am mildly intrigued/interested .

It´s the same with Win 7. My Nuforce HDP never had a problem with sleep mode.

Yes, and the question is whether the C-MEDIA CM6631 USB circuit in the Daccord does that. The next logical step would be to use a USB cable that only carries the data signal from the computer.

I´m considering using a separate USB psu for the usb input on the Daccord, Does this make sence, or will it be total overkill? I have seen other DACs supplying the USB input with power from the internal power supply. The idea is to separate the USB input from the noisy power supply of the...

Yes..: http://schiit.com/faq/international

Pop it open and check for loose connections/wires/solder joints.   

Balanced operation with 2 mini XLR sockets AND an analog input (most digital DAC/amp units are missing this option).  

Quote: Yep, that´s what I figured. The lower price of the UDH-100 is interesting, but for the price of the DAC-80 there are other options (Audiolab M-DAC?) out there. At least here in Europe.

I´m thinking of upgrading my Nuforce HDP (mostly using the DAC and PRE option/function), and have been trying to figure out the differences of the UDH-100, DAC-80 and DAC-100. Not the input/output options but the hardware used inside. The DAC/amp board and even the USB board inside the UDH-100...

Hmm..the Aune X1 has a very high gain, but maybe that´s not the case with the T1?