Massive Power Per Square Inch: Cool-Running, Efficient, Ergonomic, and U.S.A.-Made Bel Canto e.One REF500S Stereo Power Amplifier Fits Almost Anywhere, Offers Immense Dynamic Range
Maximize your available power per square inch with the cool-running, highly efficient Bel Canto e.One REF500S stereo amplifier. Equipped with two independent mono boards in a single chassis, this size-defying 8.5 x 3.5 x 12-inch marvel outputs 250Wpc into eight ohms and a whopping 500Wpc into four ohms. It touts a staggering 121dB dynamic range and tons of expressivity. Independent, low-noise power supplies and isolated input signal filter technology further act to reduce high-power amp energy, resulting in clean, transparent, resolved performance. If you're starved for space or simply don't want to deal with larger, heavier amplifiers, the ergonomic REF500S gives you all the might of much of its beefier brethren with none of the hassle.
Most importantly, the 15-pound audiophile overachiever helps reproduce music with a robustness, drive, definition, clarity, and dimensionality that should forever put any debates about Class D designs to bed. No doubt the inclusion of first-rate parts such as Caddock resistors ultra-low ESR decoupling capacitors – coupled with trademarked Impedance Optimized Input Stage, a balanced high common mode rejection, low-output impedance driver that proves crucial to the overall sound and refined presentation – speak to REF500S' worth. Ditto the set of WBT NextGen five-way binding posts that impart an undetectable sonic signature to your speaker cables and maintain an open, grain-free nature absent from those on many other amplifiers.
On the simple back panel, a pair of balanced and RCA inputs, trigger switch, and on/off switch complete the layout. Setup couldn't be more straightforward. Indeed, this U.S.A.-made amplifier specializes in easy. You likely won't believe what such a compact device can do until you hear it for yourself. Schedule a risk-free in-home audition with the security of our 100% Music Direct Satisfaction Guarantee today!
"The REF500S sounds "fast," and reproduces the sound of drums and percussion instruments with ease."
—Steve Guttenberg, CNET
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
Dimensions (WHD): 8.5" x 3.5" x 12"
Weight: 15 lbs.
User Manual (PDF, 944 KB)