Cambridge Audio SR20 Topaz Stereo Amplifier

Cambridge Audio

*Please check with our online customer service team or your local store for stock availability


The SR20 is the most powerful amplifier in the Topaz range offering an immense 100 watts per channel, backed by a dedicated subwoofer output as well as two sets of speaker outputs. It also features analogue inputs, digital inputs, a phono stage, an FM receiver and an MP3 input, so it will connect and play virtually anything you throw at it.

  • Thanks to it’s onboard Wolfson DAC (Digital to analogue converter) the SR20 provides three digital audio inputs, allowing the connection of digital sources such as streamers, TVs or laptops and it will then play them all with incredible detail and depth.

  • Continuing the comprehensive specification and attention to detail, the SR20 features a built-in MM Phono stage, bringing your vinyl to life! Turntables fitted with phono cartridges of either the Moving Magnet (MM) or high output Moving Coil (MC) type (between 2-6mV output and 30-50k load impedance) can be used.

    We strive for audio perfection, which is why SR20 features a powerful toroidal transformer. We were one of the first manufacturers to use toroidal transformers in the 1970s, and we continue to use them today.

    Electronics (and therefore sound quality) are particularly susceptible to vibration; that’s why we’ve used a low resonance, acoustically-dampened metal chassis to eliminate as much vibration as possible, ensuring that the most sound quality is extracted from every source.

  • Power output: 100 watts (into 8 ohms)

    DAC: Wolfson WM8728

    THD (unweighted): <0.01% @ 1kHz, 80% of rated power

    <0.01% @ 1kHz, 80% of rated power

    Frequency response (-1dB): 5Hz – 50kHz

    S/N ratio (ref 1W): >82dB (unweighted)

    Input impedances: 47k ohms

    Power amp damping factor: >50

    Maximum power consumption: <0.5W

    Bass/treble controls Shelving, ultimate boost/cut, +/-10dB@100Hz and 20kHz

    Digital inputs: PCM 16-24-bit

    S/P DIF: coaxial 32-192kHz

    TOSlink: optical 32-96kHz

    Tuner: FM/AM (EU and US bands)

    Dimensions: (H x W x D) 110 x 430 x 340mm (4.3 x 16.9 x 13.4”)

    Weight: 8.1kg (17.8lbs)