Conrad Johnson PV 10A Stereo Preamp.I am the original owner of this great little preamp. Bought in Berkeley. CA in the early 90's. At the time, there was significant 'digital momentum', and the demand for the phono stage was waning. I still thought my turntable sounded better, so had them do a factory update to include the phono stage. You can see that detail on the modifications tab in the photo. Tubes were replaced within the last 6 months, but I have not used it for about that ...long. I am getting to the stage where convenience is competing with 'audio perfection', and my ears are not what they used to be. Never had any issues with the preamp. it is a fairly basic and straightforward design.Thanks for looking!