http://www.nuforce.com/hp/products/iconudac/index.phpUSB powered DAC with headphone amp, even include SPDIF out. Only $99. Shipping early November too.
Specifications:
Input :
USB (USB 1.1, 2.0 compatible)
USB DAC: USB 1.1, 2.0 compatible. USB native bit rate: 32-48kHz, 16-bit
Maximum sampling rate: 48kHz
Resolution: 24-bits
Output:
Analog RCA Output = 2Vrms
Dynamic Range: 110dB
THD+N= -95 dB
S/N Ratio: 98dB
Digital Output: coaxial RCA 75-ohm
Headphone output jack
Power output: 80mW x 2 @ 16-Ohm
THD+N 0.05%
SNR > 98dB
