Bel Canto Reference REF500S Stereo Amplifier

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CNET, Steve Guttenberg, Aug 2010:

"For such a little thing (8.5 by 3.5 by 12 inches), the REF500S is seriously powerful, it can deliver 250 watts into 8 ohm speakers; 500 watts into 4-ohm-rated speakers. … Top-quality parts including Caddock resistors, special ultra-low ESR decoupling capacitors, and low-noise regulated power supplies. That's all on the inside; I think the amp looks really cool. … The REF500S sounds stellar on my Magnepan MG 3.6/R speakers, which are one of the toughest speakers to drive well."

More From Bel Canto:
The REF500S stereo amplifier has incredible power per square inch with two independent mono boards in a single chassis. Independent power supplies and isolated input signal filter technology reduces high power amplifier energy for a cleaner, transparent power.

The Bel Canto Impedance Optimized Input Stage is a balanced high Common Mode Rejection, low output impedance driver that is critical to the amplifier's performance, ensuring that the refined dynamic qualities of the recording are preserved.

WBT NextGen Speaker Connectors
The WBT NextGen connectors provide the best possible connection from the amplifier to the speaker cables. We choose them because they impart minimal sonic signature to the sound, remaining open and grain-free up throughout the audio frequency band.

Click here for a PDF copy of the Bel Canto REF500s User Guide

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REF500S Stereo Amplifier Specifications:

Maximum Power Output: 500W 4 ohms, 250W 8 ohms per channel
Power Output 1% THD: 400W 4 ohms, 200W 8 ohms per channel
Minimum Load: 2 ohms per channel
Peak Output Current: 35 amperes per channel
Frequency Response: +/-3 dB 1.5Hz-70KHz, all loads
THD+N: 0.003% 1W, 1KHz, 4 ohms
IMD (CCIF): 0.0003%, 1W, 14:15KHz, 4 ohms
Output noise: 35uVRMS A-weighted 10Hz-20KHz
Voltage gain: 27dB (single ended or balanced input)
Damping factor: >1000
Output Impedance at 100Hz: <8 milliohms
Dynamic Range: 121dB
Input Voltage for Max Output: 2Vrms
Input connections: Single-ended RCA or balanced XLR
RCA input impedance: 100Kohms
Balanced input impedance: 200Kohms
Output connections: 2-sets WBT Nextgen 5-way binding posts
Power On usage: 19W
Power Off usage: 0.0W
Internally Set Operating Voltages: 100-120VAC or 230-240VAC 50/60 Hz
Size: 8.5 x 3.5 x 12[inches], 216 x 88 x 305[mm] (WxHxD)
Weight: 15 lbs, 7 Kg

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