The VELLEMAN K4102 Guitar Preamplifier with Headphone Output Kit is a compact, battery-powered preamplifier designed specifically for electric guitar players who want high-quality sound and the convenience of private practice. Whether you're rehearsing at home, travelling, or experimenting with guitar electronics, this versatile kit provides clean signal amplification and a built-in headphone amplifier without requiring a full-size guitar amplifier.
Unlike standard line-level audio equipment, electric guitars produce high-impedance signals that require proper pre-amplification for the best sound quality. The K4102 is specifically designed to match the output characteristics of electric guitar pickups, delivering clear, low-noise amplification while preserving the natural tone of your instrument.
The kit features adjustable input sensitivity, allowing you to optimise the gain for different guitars, pickup types, and playing styles. A built-in stereo headphone amplifier delivers up to 2 × 50mW into 32 headphones, making it ideal for silent practice sessions without disturbing family members or neighbours.
Powered by a standard 9V battery (not included), the preamplifier is completely portable and can be used almost anywhere without requiring an external power supply. The included enclosure provides a professional finish while protecting the assembled electronics during everyday use.
Designed as a self-assembly project, the VELLEMAN K4102 is suitable for hobbyists, students, musicians, and anyone interested in learning more about audio electronics. It also serves as an excellent foundation for custom guitar effects projects and portable practice equipment.
Whether you're practising quietly at home, testing guitars, or building your own audio gear, the K4102 offers reliable performance, low background noise, and excellent sound quality in a compact package.
Features
Guitar preamplifier kit with integrated headphone amplifier
Designed specifically for electric guitars
Adjustable input sensitivity
Low-noise audio circuitry
Stereo headphone output for silent practice
Portable battery-powered operation
Compact housing included
Preserves the natural tone of guitar pickups
Easy self-assembly kit
Ideal for home practice, testing, and DIY audio projects
Specifications
Product Code: VELLEMAN K4102
Product Name: Guitar Preamplifier with Headphone Output Kit
Function Group: Audio / Amplifiers
Input: Electric guitar
Input Sensitivity: Adjustable
Headphone Output: Maximum 2 × 50mW
Recommended Headphone Impedance: 32
Audio Performance: Low-noise design
Power Supply: 9V battery (not included)
Enclosure: Included
Dimensions: 70 × 30 × 105mm
Typical Applications: Electric guitar practice, headphone guitar amplifier, portable guitar preamp, silent rehearsal, instrument testing, DIY audio projects, educational electronics, guitar workshops, and custom musical instrument applications.
What's in the box
1 x VELLEMAN K4102 Guitar Preamplifier Kit with Headphone Output 9V
