Audio Research Ref3 SE Stereo Preamplifier MSRP: $19,500 Color: Silver This phono preamplifier is in excellent condition and functions flawlessly. This is one of the best phono stages you can get from audio research and it sounds incredible. It comes with a Ref3 SE remote, original tube set with 279 hours, power cord, Ref3 SE manual, and the original packaging. Do not miss the chance to own this amazing preamplifier at an unbeatable price. Electronic SpecificationsElectronic SpecificationsFrequency Response:±.2 dB of RIAA, 10 Hz to 60kHz; 3 dB points below 0.3Hz and above 300 kHz.Distortion:Less than .002% at 1.0V RMS 1kHz output.Gain:Selectable 51 dB (Low) and 73 dB (High) at 1kHz BAL; 45 dB (Low) and 67 dB (High) at 1kHz SE. (MC and MM compatible).Input Impedance:47k Ohms and 100 pF SE. Selectable loads: 1000, 500, 200, 100, 50 Ohms, and Custom.Output Impedance:400 ohms Balanced, 200 ohms SE. Recommended load 50k-100k Ohms and 100 pF. (10k Ohms minimum and 2000 pF maximum).Output Polarity:Non-inverting.Phono Equalization:(selectable) RIAA, Columbia, and Decca.Maximum Input:250 mV RMS at 1kHz (680 mV RMS at 10kHz) – Low Gain.Rated Outputs:2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 30V RMS at less than 0.5% THD at 1kHz).Controls:6 Push Buttons: Power, Menu, Option, Enter, Input, Mute.Power Supplies:Electronically regulated low and high voltage supplies. Automatic 2 minute warm-up/brown-out mute. Line regulation better than .01%.Noise:0.28 µV equivalent input noise, IHF weighted. Shorted (Low Gain) input (71 dB below 1mV 1kHz input). 0.082 µV equivalent input noise (High Gain). (62 dB below 0.1 mV 1kHz input).Tube Complement:(6)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply.Power Requirements:100-135VAC 60Hz (200-270VAC 50/60Hz) 130 watts. Standby: 2 watts.Dimensions:Width 19” (48 cm)Height 7.8” (19.8 cm)Depth 16.5” (41.9 cm)Handles extend 1.6” (4 cm) forward of the front panel.Weight:36.5 lbs. (16.6 kg) Net; 53 lbs. (24 kg) Shipping.Check out my other listings.Feel free to ask any questions.I ship items only to buyers with signature required on items above $750.NOTE: Returns not accepted.

Audio research ref 3 preamp in very good working condition and without scratches. Ive just replaced the 6550 tube with a Sylvania nos one, the 6h30 are Sovtek with 2500 hours (minimum lifespan is 4000). Complete with remote and manual. The original packaging has been damaged but i assure a courier proof box. Price is fixed. Extra Euro zone buyers must ask for actual shipping costs.