I'm using the Benchmark DAC1 between an Airport Express and my preamp, connected by a glass Toslink cable. I love the setup, the songs are on a Mac in my office and the Airport Express and Benchmark are in my living room with my system.
A transport is also connected to the Benchmark and I can just flip the switch on the front of the Benchmark to change from the Airport Express input to the transport. I've used an older iBook to control iTunes on the Mac in the office using an application called netTunes.
I really like the Benchmark, it sounds wonderful and is very versatile, I've used it at times as a preamp and headphone amp, though most of the time it's used just as a DAC.
A transport is also connected to the Benchmark and I can just flip the switch on the front of the Benchmark to change from the Airport Express input to the transport. I've used an older iBook to control iTunes on the Mac in the office using an application called netTunes.
I really like the Benchmark, it sounds wonderful and is very versatile, I've used it at times as a preamp and headphone amp, though most of the time it's used just as a DAC.