This is a well-performing vintage amp from Bryston. Bryston is found in studios throughout the world because of its neutrality and reliability. This 3B is no exception as it worked admirably in our tech bench without needing a bit of maintenance. Cosmetically it's free of dents or serious wear, but the black anodizing has faded as is typical in most units this age. Click below to add our recommended matching cables from Kimber Kable, all brand new as SkyFi is an official Kimber dealer. Kimber Kable - RCA Interconnects Kimber Kable - Speaker Cables Technical Specifications:Amplifier Output ClassABRated Power Output100 Watts Per Channel at 8 Ω200 Watts Per Channel at 4 Ω400 Watts In Bridged / Mono Mode at 8 ΩFrequency Response 20 Hz - 20 kHzSignal-to-Noise Ratio 100 dBCrosstalk Below 100 dBTotal Harmonic Distortion0.05 %Intermodulation Distortion 0.025 %Slew Rate 60 Volts / microsecondSensitivity 1.0 VoltsDamping Factor 500 @ 20 HzDimensions (W x D x H)19" x 9" x 5.25"[48.26 x 22.86 x 13.34 cm]Weight 35 lbs.[15.89 kg] The SkyFi Testing Process for Solid State Amplifiers:We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage. We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally, we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If everything reads clean, we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier then remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will be also be tested.Final testing involves pushing actual music thorough the amplifier. We've learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage KEF speakers that we're very familiar with which quickly reveal any discrepancies. Some amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice. Item Included Original Box Not Included Manual Online Only Remote Not Applicable Cables Yes - Power Only Physical Condition 7 Working Condition 10
