Overall absolutely gorgeous in person, these are tube line/mic amplifiers, the sound these produce is pretty stellar. I just don’t have the studio/rack space to keep them. I matched them up pretty well on L/R balance when running program material, the sound is clean. I custom made the aluminum rack ears so they can be added to standard 19 rack and each amp fits slightly over two units of space (so 3U each roughly, or maybe 5U together). All the tubes and components are original. Condition is absolute mint, there are very few slight marks, but nothing major. Definitely impressive in person, the VU meter bulb on one unit is intermittently not working.