I'm the original owner and highly rated on Audiogon, eBay and Audiomart. The unit is almost one year old and works flawlessly. You will find all the spec data via links on the Audio Circle plus
reviews on The Audio Beatnik and Positive Feedback. Comments galore, of course, on The Audio Circle.
The Neutrik adapters for unbalanced connections are available for $50 if needed. They were purchased directly from Tommy O'Brien at the Digital Amplifier Company.
Price is $550 for the DAC and another $50 (above) for the adapters. Happy to split shipping. I do not charge extra for PayPal which is my preferred method of payment.