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OPERATION

• 

Press the USB/SPDIF button to select the input mode required.

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The LED will illuminate blue for USB and green for SPDIF input.

USB

• 

Connect the headphone amplifier to the input device (PC or USB equipped OTG 

phone).

• 

Connect your headphones to the output jack socket.

• 

Rotate the volume control to turn the amplifier on and your source device will 

recognise the amplifier as an external sound card.

• 

Adjust the volume level as required.

SPDIF

• 

Connect an SPDF source device to the SPDIF input socket and provide a 5VDC 

power supply to the USB input using the supplied USB cable.

• 

Connect your headphones to the output jack socket.

• 

Rotate the volume control to switch the amplifier on.

• 

Adjust the volume level as required. 

• 

Alternatively to headphones, connect an external line level device to the output jack.

• 

Use a soft cloth to wipe off any dust. If the device is very dirty, use a damp cloth and 

wipe dry.

• 

Do not use any chemicals, abrasives or solvents that could damage the casing.

MAINTENANCE

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