Up for sale is an LM502CA DAC from Line Magnetic with both Tube & Solid State output stages and RCA or XLR analog outputs. As it says in the subject line in flawless condition, both cosmetically and operationally. Uses one 6X4 Rectifier and two 12AU7 output tubes. I have upgraded this unit with the following: 1) New Gain Matched Pair (2) Genalex 12AU7/ECC82 Gold Pin Vacuum Tubes ($68 - installed March 2019) 2) Synergistic Research ORANGE Quantum Fuse 2A, slow. ($160) 3) A new USB board installed in late September 2019. Also included in the purchase shall be NOS RCA rectifier tube in addition to the supplied manufacturer's tubes.This truly is a wonderful sounding DAC This truly is a wonderful sounding DAC w/ excellent musicality, resolution and clarity. Please read reviews. No pets, No smoke, No children. Unit shall be double boxed and shipped via UPS. I'll pay PayPal fees. Thanks for looking.