This is the classic Linn Amplifier. Works perfectly. Sounds fantastic! A few scratches (see photo) on top, but front is clean. I got this along with a lot of other super high-end components at an auction of some (apparently fabulously wealthy) Texan’s ranch. Some of the items were still in their unopened boxes and many looked unused. The top of the Spark power supply is scratched from having the amp sit on top of it, as well it has some rubber “feet” pads stuck to it (see photo) To get the amp as well as the power supply is a rare find indeed.
It is a two channel amp. Please look online for other specs and reviews. I have two of these, so let me know if you want both.