I purchased a LiTe DAC-AH digital-to-analog converter last year to listen to music from a hard-drive through my Carver M-400 magnetic field stereo amplifier. I looked for a while (with a limited budget) and found this little beauty which is doing the trick just fine. BTW, it only cost me about $170 delivered.

LiTe DAC-AH (8x TDA1543 NOS)

Here's a brief review of the DAC:

http://www.tnt-audio.com/sorgenti/lite_dac_e.html

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Current:
2014 VW Tiguan SEL 4Motion 43,000 miles.

2016 Hyundai Santa Fe Sport (wife's).

Past:
2006 Jetta TDI 135,970 miles. Sold Nov. '13.
1995 E-320 Special Edition. 220,200 miles. Sold Sept. '07.
1987 190-E 16 valve. 153,000 miles. Sold Feb. '06.
1980 300-D 225,000 miles. Donated to the National Kidney Foundation.
1980 240-D manual, 297,500 miles. Totaled by inattentive driver.