I've owned my Yamamoto DAC since Feb 2010 and plan to keep it for a very long time. There are two versions, transistor and tube. Bill and I have the SS model. I haven't heard the tube DAC. 6 Moons did a review of both and found the same family signature with "subtle" differences. They said if you like one, you'll like the other. The retailer who I bought from felt the same for what it's worth.
I trusted his opinion and got the SS version as it was 500.00 USD less. I generally much prefer tubes but in this case I made an exception. I have no regrets, as Bill said the DAC sonically mates with the DHT presentation quite well.Ultra simple circuit,minimal filtering, no Op amps or NFB are probably major factors to the natural sound it has.
