Compact amplifier

This amplifier is intended to be used as a small desktop amplifier. It has no fancy stuff. It does not even have a volume knob.

It has a short-circuit protection and all the necessary filtering on the inputs and outputs.

The input is single-ended.

It has two types of boards:

• Amplifier board: Mono channel.
• Power supply board with speaker protection & mute and LED indication.

The complete model of the amplifier case layout is based on Dayens Ampino power amplifier.

Amplifier board

Description

The board contains one amplifier with short-circuit proction and input and output filters.

Dimensions

Max width: 80mm Max height: 100mm

Connections

• Power supply connectors: Vcc, GND, Vee.
• Output connectors: Out, GND.
• Input connector: In, SGND.

Power supply board

Description

Dimensions

Max width: 140mm Max height: 100mm

Connections

• AC Voltage input: Live, Neutral, Earth.
• Switch: CN1, CN2.
• Primary output: Live, Neutral, Earth.
• Secondary input: AC1, GND, AC2.
• DC output: Vcc, GND, Vee.
• Amplifier input: OutL, GND, OutR, GND
• Amplifier output: OutL, GND, OutR, GND
• LED indicator (POWER/FAILURE/OVERLOAD): Anode, Cathode.
• Mute key: K1, K2.