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Cambridge Audio Topaz SR20 Stereo Receiver

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The Topaz range is Cambridge Audio's entry-level range.However,with their high standards the Topaz range is far from entry-level.The SR 20 for it's price  is a high powered gem that delivers in spades in not only audio quality but features and convenience.This receiver delivers 100 watts per channel,quality watts powerful enough to give good drive capability to almost all loudspeakers to give you great live sounding dynamics.

The SR 20 also covers most bases when it comes to connecting all your favourite sources.Firstly being a receiver,it has an inbuilt AM/FM tuner,and then it accommodates your turntable for the vinyl experience with an inbuilt phono preamplifier.....something not offered over the last 20 years with amplifiers.And then there is the digital input stage incorporating an onboard digital to analogue converter which allows you to connect your TV to your hifi system via digital optical......the only way late model TVs output their audio signal.Then there are the extra digital inputs to allow digital streaming,etc. and an extra 2 analogue inputs for other components.There is also a direct MP3 input conveniently located on the front panel.


  • Wolfson WM8728 digital-analogue converter for connecting digital sources
  • 100 Watts of AB amplification through a toriodal transformer for huge power and volume
  • A dedicated subwoofer output to make the SR20 the heart of a 2.1 hi-fi system
  • Built-in MM phono stage allows direct playback of turntables
  • Two sets of fully switchable speaker outputs mean you can enjoy fully independent A/B switching of two pairs of speakers


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. Some of the benefits of a toroidal transformer, over the cheaper, inferior EI transformers used by most other manufacturers are:

  • High quality power output to the amplification circuits, with no clipping, transformer noise, buzz or hum, to provide a consistent signal
  • High power output, to allow large and demanding speakers to be driven at high volumes with sensational bass performance
  • Large power reserves, to allow the transformer to deliver high peaks of volume when required
  • Fully shielded against internal and external electrical interference, to maintain quality of power and signal


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.

The Cambridge Audio SR 20 stereo receiver is truly a special sounding piece of kit.A great way to enjoy all your sounds with high fidelity sound for an exceptionally reasonable price.You will struggle to find a better value for money solution to achieving quality sound and connectivity at this price.It does tick the boxes.


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)
(H x W x D)
110 x 430 x 340mm (4.3 x 16.9 x 13.4”)
Weight 8.1kg (17.8lbs)

* Reprint from manufactures website

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