Legendary Audio Research reference 3. One of highest reviewed pre amps of all time by owners and professional reviewers. Unit is in excellent condition no dings or scratches of any kind and functions perfectly. The original Audio Research Tubes have 1970 hours with lots of life left Audio Research recommends replacement at 5000 hours. This preamp will also come with the upgraded metal remote in perfect condition. All tubes will be removed and location marked prior to shipment in their original packaging the pre amp will be shipped in its original boxes and packaging. Shipping will be insured with signature required to the 48 contiguous states. No fee for paypal or CC payment.