Low priced alternative to Benchmark Dac1

Audio Mirror makes a good sounding DAC. Had one before I got a Benchmark, but I didn't do any A/B comparisons.

Give the Beresford TC 7510 a go...at ~150 bucks is a true bargain. Several of us A/B'd it against the benchmarh USB DAC1 and the benchmark just barely won out (at about 8x the price) -plus, at that price it comes with a digital cable!

Check out the Audio Magus website for the Aelous Audio MagiDAC. Uses transformers for gain instead of op amps or tubes.

The Channel Islands Audio VDA 2 is a great DAC, in fact I think it sounds better than the Benchmark. It is a minimalist design but the build quality is exceptional and it has a fully discrete analog section and very mild digital filtering. It will also accept 24/192 over coax. Additionally I thought that the DAC 1 has too many bells and whistles that I wouldn't use, not mention that it uses op-amps.

The VDA 2 is very dynamic and revealing, you won't believe you're listening to a $600 DAC. Best money I've spent on audio in a long time.

Paradisea usb - tube dac, sold direct. I can not speak on the usb input sound. I own the same but non usb version. I am not sure what is the price right now but I think it is around $700 Shipped. Very easy on the ears, on par or better then Scott Nixon ( top model, non usb ). Easy to tube roll and very responsive to different tubes which are very inexpensive (nos). Great thread on AC forum that goes into details on tube choices , mods etc.....
Might not be as clean and polish as Benchmark but the benefit of music that is relaxed, non edgy and liquid is clear......we are talking about the digital that never fails to remind us about its sterile characteristics that take away from musicality that we want to enjoy and not to bare with.