I decided on the Corda Jazz after reading numerous reviews online. Key factors were the price and the inclusion of the cross-feed circuit. Purchased last month during their November sale for $265, shipping to U.S.A. included. I ordered on a Sunday and the amp was shipped the next day. It arrived ten days later. The amp arrived in perfect condition. First impression was that it's very well-constructed. It comes with a heavy duty power cord. Most of my listening has been with Sennheiser HD-650s. My only comparison points for the amp are the...