7 Watt Mono Audio Amplifier

7 Watt Mono Audio Amplifier

This small amplifier is constructed around the TDA2003 IC. The circuit has complete thermal and short-circuit protection.


  • L: 2.25" W: 1.5" H: 1"
  • Power output: 7W / 4ohm
  • RMS output: 3.5W / 4ohm or 2W / 8ohm
  • Total harmonic distortion: 0.05% (1W / 1kHz)
  • Frequency response: 20Hz to 20kHz (-3dB)
  • Signal/noise ratio: 86dB (A weighted)
  • Input sensitivity: 40mV / 150Kohm
  • Overload and short-circuit protected
  • Supply voltage: 15V DC (8 to 18V DC possible) / 0.5A

7 Watt Mono Audio Amplifier Reviews:

  • --> Assisted my 10 year old son in assembling the amplifier. It was his first ever soldering project. Amplifier is well laid out and works perfectly after completion.

  • --> Very high quality board and components. Clear and concise


    I'm using this with a small mike to moniter the tick-tock sound of small mechanical clock escapements to adjust them. I'm going to mount the pc board and battery holder in a small enclosier with a jack for mike and speaker for use away from the shop. It will be small enough to fit in a shirt pocket. Very handy. Nice product.