A DAC from the digital pioneers Wadia
The di322 is their latest design and has a god set of in and outputs: Wadia is know
for their excellent build quality and rigid chassis, the di322 is no exception.
You can connect it directly to your power amplifier and use the inbuilt volume
control of good quality
The di322 also include a headphone amplifier that manage a wide range of
headphones, even the tougher ones to drive

I do not have the original boxes, so pick up is preferred

http://www.wadia.com/en-us/products/di322