Chord Electronics Etude Stereo power amplifier

Chord Electronics Etude stereo power amplifier.


What we Say:

The Chord Electronics Etude is a stereo power amplifier which forms part of the Choral range. It can either be paired with the Dave in an all digital system or with the Chord Prima analogue pre-amplifier. Chord also make a matching phono stage called the Symphonic and also a stand system for it called Ensemble.

The Etude is a compact stereo power amplifier with 75 WPC into 8 ohms and 130WPC into 4 ohms. The etude case is machined from a solid billet of aluminium and beautifully finished in either silver or a black anodised finish. On the rear panel there are both single ended RCA and balanced XLR inputs. These are selected using a pair of toggle switches.

Take a look at the following product review from Hi-Fi World.

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What they say:

The multi-award winning Chord Electronics Choral family of products has never sounded so good. Welcome Étude to the table, a 150w Class AB stereo power amplifier featuring the first fundamentally new topology since Chord Electronics’ inception in 1989, using highly advanced technologies seen within the aerospace industry.

The Choral Étude has been designed to both compliment and exploit the full potential of the multi-award winning DAVE DAC, which has preamp functionality, and the brand new topology has even faster power delivery than exiting designs, offering unrivalled dynamics, life-like delivery of transient information, plus effortless control over loudspeaker drive units.

The design for Étude is based upon multi-feedback and dual feed-forward error-correction amplifier technology that intelligently adjusts and compensates the individual linearity of the 250-watt lateral structure high-power proprietary MOSFETs. Internally there are three individual high frequency switch mode power supply units, one for each active power rail and a final for the auxiliary rails. When paired with advanced internal shielding, active cooled plenum chamber design, and custom Chord Electronics MOSFETs, you have Étude, an world class extremely fast crystal clear amplifier.

Although the amplifier is conservatively rated at 150W into 4Ω, if you run Étude in bridged mono mode you can increase this to 300W into 4Ω.

Weight: 3.45kg


Class AB Sliding Bias
HF Switch Mode Power Supply
Chord MOSFET Construction
Fully Balanced Circuitry
Fan Cooled
Stereo Balanced XLR Inputs
Stereo Unbalanced RCA Inputs
Solid Aluminium Chassis
Bridgeable to 300w – 4Ω


Étude Quickstart guide

Safety instructions

10A Mains IEC cable

Output Power:

150w RMS per channel @ 0.05% distortion into 4Ω

Frequency Range:

5Hz – 100kHz +/- 0.5dB



Channel Separation:

Better than 95dB

Input Impedance:

100kΩ Unbalanced/Balanced

Input Capacitance:


Output Impedance:


Output Inductance:



6.7cm (H) 33.5cm (W) 17.5 (D)