⭕ Audio Research Vacuum Tube preamplifier Model -Reference 5 SE. It is in excellent cosmetic condition. I still have the original box. The Ref 5 SEs cosmetics and layout are handsome in Audio Researchs traditional fashion, and its the same goodly size and weight as the Ref 5: 19 wide by 7 high by 15.5 deep, and weighing 30 lbs. The chassis is of heavy aluminum, with a thick, elegantly machined aluminum front plate and two rack-mount handles. The review samples top plate was of tinted polycarbonate, with slot vents. A cover of perforated aluminum is also available, but ARC recommends the polycarbonate, perhaps because of lower chassis resonances. Available for shipping.