I curretly Have a Yamaha RX V1800 reciever pre-out to an Emotiva EPA-2 conected to a pair of Martin Logan SL3 speakers.
The Yamaha reciever has a Bur Brown Dac built in. Yamaha Said the DAC would kick in while in direct mode.
I have kicked around adding a vintage Pre-amp out from the Yamha to kind of warm up the soud a bit.
My friend suggested that I should look into a couple of Vintage pre-amps like:
Phase Linear 4000
Current model Emotiva
Please fire away with suggestions.