Up for sale is a near-mint Jeff Rowland coherence one preamp. As you can see in the pictures the top is a custom acrylic cover to show off their beautiful work of mr. Rowland circuit design back in the day Jeff had a few of these for dealers but customers began to request them, this was told to me by mr. Rowland himself.the pics show some glare, more pics available. Noise floor is dead quiet!I sent it to Rowland Design Group in April of 2016 Jeff was the only one that could fix it he found parts that actually were from more expensive units replace the power transformer and photo modules I also have the original wooden crate they used to ship them in. The only blemish on the top of the power supply which is minimal, half inch scratch, is rubbed out and black and covered because the unit on top is placed above the power supply. I'm including two special cables that are made to hook up to the inverted and normal outputs of the output stage which in turn creates a true balance left and right signal that can go into your main amplifier. I also have a Yamaha analog to digital converter ,at additional cost of interested, which can be used with these cables for recording purposes,. Any shipping outside the 48 states will cost the buyer the additional cost and insurance, no warranties are implied due to the age but please read my feedback I'm very serious about the packing and condition of the units I sell. Please email me with any questions thanks for looking. Most of my buying and trading have been on eBay please check out that site to get an idea of my history I currently have 8 items for sale, mharris33442012 is where you can find me.i have 200 - 100% positive feedback,,,, the only reason to sell is I'm have others and want to try some tube preAmps. I have all the mail between Mr. Roland and my self if interested, he was a great joy to work with ,thx for looking .