Cambridge Audio CXA81 User's Manual

Cambridge Audio CXA81 Amplifier manual cover

Pages 33

Year 2016

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of 33

Cambridge Audio CXA81 Amplifier Specification

The Cambridge Audio CXA81 Amplifier is a high-performance integrated amplifier designed to deliver exceptional audio quality and versatility. At its core, the CXA81 features a robust Class AB amplifier architecture, providing an impressive power output of 80 watts per channel into 8 ohms, and 120 watts per channel into 4 ohms. This power capability enables it to drive a wide range of speakers with clarity and precision.

The amplifier boasts a high-resolution ESS Sabre ES9016K2M DAC, supporting up to 32-bit/384kHz PCM and DSD256 audio formats, ensuring superior sound detail and dynamic range. Connectivity options are extensive, including balanced XLR inputs for low-noise connections, digital optical and coaxial inputs, and USB audio input compatible with computers and streaming devices. The inclusion of Bluetooth aptX HD allows for high-quality wireless audio streaming directly from Bluetooth-enabled devices.

The CXA81 also features an analog preamp section with a toroidal transformer, reducing electromagnetic interference and providing a cleaner power supply for improved audio fidelity. The front panel hosts user-friendly controls and a sleek volume dial, allowing precise adjustments. In terms of build, the CXA81 embodies Cambridge Audio's commitment to quality, with a solid, vibration-resistant chassis that minimizes unwanted resonance.

This amplifier is designed for audiophiles seeking a versatile and powerful solution that bridges traditional and modern audio sources, offering a rich, immersive listening experience. Whether paired with high-fidelity speakers or integrated into a larger audio setup, the Cambridge Audio CXA81 stands out for its exceptional sound quality and comprehensive feature set.

Cambridge Audio CXA81 Amplifier F.A.Q.

How do I connect my Cambridge Audio CXA81 to a turntable?

To connect a turntable to the CXA81, first ensure your turntable has a built-in phono preamp or use an external phono preamp. Connect the turntable's output to one of the RCA input sets on the CXA81, such as AUX1 or AUX2.

What should I do if the CXA81 amplifier is not powering on?

If the CXA81 is not powering on, first check the power cable connection and ensure the power outlet is functioning. Try using a different power outlet. If the issue persists, check the fuse in the power plug or consult a professional technician.

How can I connect the CXA81 to a Bluetooth device?

To connect via Bluetooth, activate Bluetooth on your device. On the CXA81, press the Bluetooth button on the front panel. When the Bluetooth indicator is blinking, search for "CXA81" in your device's Bluetooth settings and pair it.

What is the best way to clean and maintain my CXA81 amplifier?

To clean the CXA81, use a soft, dry cloth to wipe the exterior surfaces. Avoid using any liquid cleaners or solvents. Ensure the amplifier is turned off and unplugged before cleaning. Regularly check and dust the ventilation areas to prevent overheating.

Why is there no sound coming from my speakers when connected to the CXA81?

If there's no sound, check the speaker connections to ensure they are secure. Verify the correct input source is selected on the CXA81. Also, check the volume level and ensure the mute function is not activated.

How do I perform a factory reset on the Cambridge Audio CXA81?

To perform a factory reset, turn off the CXA81. Then, hold down the power button for about 5 seconds until the unit restarts. This will reset all settings to their default values.

Can I bi-wire my speakers with the CXA81?

Yes, the CXA81 supports bi-wiring. Connect the low-frequency and high-frequency speaker terminals to the corresponding terminals on the amplifier using separate sets of speaker cables. Ensure all connections are secure.

How do I update the firmware on my CXA81?

The CXA81 does not require regular firmware updates as it is primarily an analog device. For any potential updates or support, check the Cambridge Audio website or contact customer support.

What digital inputs are available on the CXA81?

The CXA81 is equipped with multiple digital inputs, including one S/PDIF coaxial, two Toslink optical inputs, and a USB Audio input compatible with high-resolution audio formats.

Is the CXA81 compatible with 4-ohm speakers?

Yes, the CXA81 is capable of driving 4-ohm speakers. Ensure that the ventilation is adequate to prevent overheating, as lower impedance speakers can demand more power from the amplifier.