Bel Canto REF601M Monoblock Amplifier


The REF601M monoblock provides serious power, delivering the pure treble of Class A, the slam of the best Class D architectures, and the mid band presence that brings your music to life.


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.

– Max Power Output: 600W 4 ohms, 300W 8 ohms per channel
– Peak Output Current: 27 Amps
– Balanced Input Impedance: 200 Kohms
– Selectable gain option: 27dB or 33dB
– Power Trigger

Power Output 1% THD: 600W 4 ohms, 300W 8 ohms
Minimum Load: 2 ohms
Peak Output Current: 27 amperes
Frequency Response: +/-3 dB 0Hz-50KHz, 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 (internal switch select for 33dB)
Damping factor: >1000
Output Impedance at 100Hz: <8 milliohms
Dynamic Range: 121dB
Input Voltage for Max Output: 2.3Vrms at 27dB gain
Input connections: Single-ended RCA or balanced XLR
RCA input impedance: 100Kohms
Balanced input impedance: 200Kohms
Output connections: 1-set WBT Nextgen 5-way binding posts
Power On usage: 22W
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

Stereophile, Herb Reichert, Sept 2017 “The Bel Canto Design REF600M’s strongest trait was its uncanny ability to make simply recorded music sound hauntingly real. With every loudspeaker I tried, the Bel Cantos offered up weight, body, punch, and crystalline detail better than some of the most expensive amplifiers I know.”
The Absolute Sound, Steven Stone, Feb 2017 “To my ears [the REF600M is] good enough to qualify as the best all-around power amplifier I’ve heard to date, regardless of technology or circuit topology.”

Hi-Fi+ Magazine, Eric Neff, Jan 2017 “There was no aspect of the sonic presentation where I became focused on some flawed nuance. Instead it was simply the joy of a classic musical masterpiece. Immersive and musical, it was an experience we all seek as music lovers.”

Stereophile, Kalman Rubinson, Oct 2016 “Bel Canto Design’s e.One REF600M amplifier packs a huge amount of power into a small package, and offers impressively low levels of distortion and noise.” – John Atkinson “[The REF600M is] so satisfying that is encouraged, even demanded, listening with complete engagement.” – Kalman Rubinson

Australian Hi Fi, Frank Wright, 2016 “OMG! How powerful are these new Bel Canto REF600M amplifiers? Enormously, overwhelmingly powerful is the answer, and it’s instaneous, super-clean power…” “Enormously powerful, very quiet and with a sound quality so tonally accurate that it’s a constant delight to the ears… an outstandingly good power amplifier.” Steve Holding puts the REF600M on the test bench and concludes: “In sum, I think this may be the best-performing Class-D amplifier I have ever seen…”

SoundStage! Hi-Fi, Roger Kanno, Feb 2016 “Several Bel Canto Design amplifiers have come through my system over the years, but the e.One REF600M is the best sounding of all, … In fact, it’s one of the best-sounding amps from any company that I’ve had in my system.”