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Universal stereo pre-amplifier

Velleman K2572: Universal Stereo Preamplifier

Velleman K2572

The Velleman K2572 Universal Stereo Preamp Electronic Project Kit

Using the Velleman K2572 low noise, stereo preamplifier kit, you can easily boost small signals. Ten connections are provided on the kit’s PCB for connection to your system. You can adjust the output amplitude of the right and left channels independently by adjusting the trimmer potentiometers.


For a Mono Preamp Kit, check out the Velleman K1803: Universal Mono Pre-Amplifier Kit.




  • Frequency range: 40Hz - 30kHz (-3dB)
  • Max. input voltage: 50mVrms
  • Adjustable gain: 40dB max.
  • Output impedance: 1Kohm
  • Power supply: 10-30V DC / 5mA
  • PCB dimensions: 1.7 x 2.6"

Additional Information

Difficulty Level 2


Parts list
English assembly instructions through illustrations, pictures, etc.

Assembly instructions
Written multilingual manual explaining how to build the kit

Info Sheets

Resistor colour code

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product