Cambridge 651P | Black MM/MC Phono Preamp


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Details & Highlights

Product Highlights

    Designed For Purity

    There's something uniquely pleasurable about listening to vinyl, something that digital media can't reproduce in quite the same way. However most hi–fi amplifiers won't let you plug in a turntable directly. You need to connect via a phono stage (also known as a phono preamp) to make the very small signal from the turntable powerful enough for your main amp to work with. But it's very easy to add noise at this stage, which is why we have designed the 651P using premium components chosen for exceptional accuracy, amplifying the signal without distorting it or introducing noise.

Details from Cambridge Audio


    The 651P works with all turntables, whichever type of cartridge they use. Like the 551P it works with popular Moving Magnet cartridges. But it also works with Moving Coil cartridges found in the highest–end audiophile turntables offering even more accuracy and detail than Moving Magnet. Additionally, even if your amplifier does have a built–in phono stage, it's well worth bypassing using the 651P to deliver much greater depth and detail of audio.

    Advanced Amplification

    Audio circuitry has been refined with multiple transistors wired in parallel ensuring the lowest possible distortion and noise. A copper shield provides further protection to this extremely sensitive part of the circuitry, limiting the noise that can be injected into the signal. This is especially important with a Moving Coil cartridge because its signal is even quieter and more delicate than Moving Magnet, so it needs even more amplification.

    Premium Components

    High–spec multi–parallel capacitors achieve exceptional RIAA accuracy — the industry standard for reproducing vinyl recordings. While a highly accurate, subsonic filter removes the common problem of unwanted low–frequencies that are inaudible but can damage subwoofers.

    Total Power Off

    In line with Cambridge Audio's commitment to the environment, a power switch cuts energy consumption to zero when not in use.


Features & Specs

Best Seller
Manufacturer's Warranty
    1 Year Limited Warranty
Detailed Specifications
    Technical Specifications
  • Max Power Consumption
    • Moving magnet (MM): 5W
    • Moving coil (MC): 5W
  • Gain @ 1kHz
    • MM: 39dB
    • MC: 55dB
  • Input Impedance
    • MM: 47 kOhm
    • MC: 100 Ohm
  • Input Capacitance
    • MM: 220pF
    • MC: 220pF
  • Nominal Output
    • MM: 300mV
    • MC: 300mV
  • Sensitivity For Nominal Output
    • MM: 3.35mV
    • MC: 0.5mV
  • Overload Margin
    • MM: >30dB
    • MC: >30dB
  • THD 20Hz – 20kHz
    • MM: <0.005%
    • MC: <0.002%
  • RIAA Curve Accuracy
    • MM: < +/–0.3dB 20Hz–50kHz (subsonic filter off)
    • MC: < +/–0.3dB 20Hz–50kHz
  • Signal To Noise Ratio
    • MM: >86dB
    • MC: >72dB
  • Crosstalk @ 20kHz
    • MM: >83dB
    • MC: >69dB
  • Color: Black
  • Dimensions
  • Width: 8.5"
  • Height: 1.8"
  • Depth: 5.2"
  • Weight: 2.0 lbs
Product Bullets


Included Coverage from Cambridge Audio: 1 Year Limited Warranty

Category ID: 171 | $199.95