• Intro

    REF150S Stereo Amplifier

    The REF150S stereo amp is ideal for compact systems using monitors or smaller speakers, designed with high current output will drive speakers to their fullest potential.

    • Max Power Output: 150W 4 ohms, 75W 8 ohms per Channel
    • Minimum Load: 3 ohms per Channel
    • Peak Output Current: 30 Amps per Channel
    • Balanced Input Impedance: 200 Kohms

  • Features

    REF150S Stereo Amplifier Features


    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.

    Custom Power Input AC/DC Filter and Energy Storage
    Our custom AC/DC input filter and energy storage stage to allows the amp module to operate in a better controlled environment, providing lower noise operation and better dynamic signal handling, making the amplifier sound ‘bigger’ and conveying dynamic nuance more accurately.

    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.

  • Specs

    REF150S Stereo Amplifier Specifications


    Maximum Power Output: 150W 4 ohms, 75W 8 ohms per channel
    Power Output 1% THD: 120W 4 ohms, 60W 8 ohms per channel
    Minimum Load: 3 ohms per channel
    Peak Output Current: 30 amperes
    Frequency Response: +/-3 dB 1.5Hz-90KHz, 4 ohm load
    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: 117dB
    Input Voltage for Max Output: 1.1Vrms
    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: 9.5W
    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?, 216 x 88 x 305mm (W x H x D)
    Weight: 13lbs, 6.5Kg

    Features and specifications are subject to improvements and changes without prior notice.

  • Reviews

    REF150S Stereo Amplifier Reviews

    SoundStage, Aron Garrecht, April 2011

    "During my time with Bel Canto’s entry-level REF-series stereo amplifier, I quickly grew to appreciate its sound. The almost tube-like refinement with which it passes along whatever signal its amplifying has proven very seductive. The Bel Canto e.One REF150S is the most musical amplifier I have heard south of $5000, with the exceptions of its bigger brothers, the REF500S and REF500M. If you’re in the market for a wonderfully musical two-channel amplifier that offers tremendous value and performance, rock-solid build quality, and uses a minimal amount of power, you owe it to yourself to audition Bel Canto’s e.One REF150S."
    CNET, Steve Guttenberg, Jan 2010

    "Minneapolis-based Bel Canto Design introduced a new superefficient dual-mono (stereo) 150-watt amplifier, the e.One REF150s. I really love the sound of Bel Canto amps, and I love that they draw very little power, usually less than 30 watts from your wall outlet."