Chapter Couplet 500M Mono Amplifier

Retail $16,900 CAD

Contact us for sale price

Product Manual

The Chapter Couplet 500M is a ‘State Of The Art’ audiophile mono Power Amplifier that incorporates years of Research and Development in power supply and D Class Audio circuits. The Couplet 500M features a number of new design features along with scrupulous attention to technical detail. Our objective is to provide a product capable of great musicality and realism whilst boasting exemplary technical specifications. By bringing together engineers and designers with a lifetimes experience in audio and power system design we believe this objective has been more than achieved.

The Chapter Couplet 500M can handle all of today’s high-resolution sources, without compromising fidelity, as you would expect of any Chapter product. Our goal, as always, is to produce a true reference quality power amplifier. A product that can be held in the highest regard from both objective and subjective perspectives.

After several years of research and development, we believe that we have succeeded in fulfilling the requirements of even the most discerning audiophile.

Design Features

Finest Part Selection: The Couplet 500M uses the best sounding OPAMPS from Burr Brown. All electrolytic capacitors are a considered combination of Samwha and ultra low ESR Panasonic Gold series. All components used without our power supply and amplifier design have been auditioned for performance, consistency and durability. At Chapter we also use the finest ‘Melf’ surface mount precision resistors.

Balanced Zero Ripple Power Supply: This technology allows the benefits of a regulated supply without the size, heat and wasted energy of a conventional design The demands on the power supply rails are balanced between positive and negative in real time to ensure lowest levels of ripple and noise to feed the amplifier circuits.

Massive Energy Storage: By combining the benefits of the Balanced Zero Ripple supply with a large number of ultrafast high voltage capacitors we can ensure that even the most demanding of musical passages do not perturb the voltage rails of the amplifier, allowing for effortless reproduction of audio. This energy storage is necessary for providing sustained deep and controlled bass.

Balanced ground layout: Cancels the ground currents that can cause Inter-modulation distortion and crosstalk in a conventional stereo design.

Full Immersion Gold Printed Circuit Boards: Audio signals travel on gold track. As you would imaging, compared to copper and gold plate this is a very expensive to manufacture, but the sonic benefits are hugely tangible in terms of space, air and dynamics.

Unique D Class amplifier circuit: Our amplifier circuitry is elegant and simple. It employs post filter feedback and has a flat harmonic distortion characteristic across the entire audio bandwidth. The circuit combines the best virtues of both valve and solid state designs with unparalled dynamic range.

Touch Sensor operation: In order to give the user full control over the amplifier, a series of touch sensors have been implemented into the unit that are subtle on the eye, and yet easy to use. These sensors can be used to change inputs, mute the amplifier, or change the lighting conditions on the unit.

Specifications

Output Power:

500 Watts into 8 Ohms (10mS Burst 10% Duty Cycle)

1000 Watts into 4 Ohms (10mS Burst 10% Duty Cycle)

THD + N:

Less than 0.01% at 1KHz. 100 watts 8 ohms (using AUX0025 Filter)

Less than 0.02% at 1KHz. 100 watts 8 ohms (22Hz to 22kHz bandwidth)

IM Distortion:  Better than -100dB (19+20KHz dual tone test - 1 KHz product at 1V input)

Frequency response:  5Hz to 65KHz +0 - 3dB

Common mode rejection ratio:  Better than -75dB (1kHz @ 0dBV)

Gain:  26dB

Audio inputs:

Impedance (unbalanced) 47K Ohms

Impedance (balanced) 94K Ohms

Audio outputs:  Impedance Less 0.05 Ohms 20hz to 20KHz

Input sockets:

1 XLR for balanced line operation

1 RCA Phono for single ended operation

Output sockets:  1 Pair of WBT output terminals

Other Sockets:  DC Trigger input. RS232 connector.

Finish:  Fully bead blasted, anodized aluminum alloy casework.

Power on/off:  Switch and indicator. IEC mains input socket.

Weight:  Approx. 45 Kg

Size:  390 x 370 x 390 mm (WxHxD) approx.

Note: Although the information given is in good faith, Chapter Electronics reserves the right to improve specifications and details without notice.