Products
Onboard Guitar Preamps

We produce onboard guitar preamps that can be used in electric, bass or electro-acoustic guitars.

G-201 - Onboard Guitar Preamp

Basic guitar & bass preamp based on a JFET transistor.

G-201P - Onboard Guitar Preamp

Basic guitar & bass preamp based on a JFET transistor with true - bypass.

G-201 Acoustic - Onboard Guitar Preamp

Basic guitar & bass preamp based on a JFET transistor with integrated connectors. Designed for piezo systems.

FET Acoustic VOL & TONE - Onboard Guitar Preamp

Basic guitar preamp based on a JFET transistor with integrated connectors. Designed for piezo systems.

Piezo Preamp - Onboard Guitar Preamp

A very transparent piezo preamp for acoustic instruments.

G-301 - Onboard Guitar Preamp

A simple guitar preamplifier, based on two transistors.

G-501 v3 - Onboard Guitar Preamp

Guitar preamp based on low noise op-amp with adjustable gain.

BP-26dB - Onboard Guitar Preamp

Guitar preamp based on low noise op-amp with adjustable gain.

VSC-3 - Onboard Guitar Preamp

Guitar preamp based on op-amp with adjustable gain for three frequencies.

VSC-3 - Onboard Guitar Preamp - External Potentiometers

Guitar preamp based on op-amp with adjustable gain for three frequencies.

EQ-Boost - Onboard Guitar Preamp

The VSC-3 based preamp works as a 3-band EQ booster.

2EQ-Boost - Onboard Guitar Preamp

The VSC-3 and BP-26dB based preamp works as a 2-band EQ booster.

EQ-Boost - Onboard Guitar Preamp - External Potentiometer


The VSC-3 based preamp works as a 3-band EQ booster.

Treble & Bass - Boost - Onboard Guitar Preamp

The VSC-3 based preamp works as a 2-band EQ booster.

Mid-Boost - Onboard Guitar Preamp

The VSC-3 based preamp works as a mid - booster.

DiffAmp - Onboard Guitar Preamp

Guitar preamp based on low noise op-amp. The DiffAmp is designed to work with passive humbuckers.

DoubleDiffAmp - Onboard Guitar Preamp

Two-channel guitar preamplifier based on a low-noise operational amplifier. The DoubleDiffAmp is designed to work with passive humbuckers.

JE-1000 - Onboard Guitar Preamp

Guitar preamp with gain, volume and tone controls. A built-in selector is used to shift the resonant frequency of the pickups.

3EQ - Onboard Bass Preamp

3EQ preamp based on low noise op-amp.

3EQ - Onboard Bass Preamp - miniature version

3EQ preamp based on low noise op-amp.

This is a miniature SMD version of the well-known 3EQ bass preamp (shown above).

MBEQ3 - Onboard Bass Preamp

MBEQ3 preamp based on low noise op-amp.

Onboard Preamps for other instruments

We produce onboard preamps that can be used in electric instruments.

HG-Preamp

4-chanel mixer and global EQ for Hurdy Gurdy.

Onboard Guitar Effects

We produce onboard guitar effects. They are often miniaturized versions of classic stompboxes that can be integrated into the instrument.

DynaComp - guitar compressor

DynaComp is a classic and most popular guitar compressor that needs no introduction.

Replacement modules

We produce replacement modules that are used to modernize and repair many well-known audio devices.

A101 - Discrete Op-Amp - Replica

The A101 modules were made for Studer A80 reel-to-reel tape recorders.

Guitar Effects Pedals

Coming Soon!


We produce exclusive guitar effects. Our offer includes replicas of classic guitar effects and our own solutions developed by our engineers.

3EQ Bass Preamp - effect pedal

The bass preamp is built on the basis of the classic 3EQ Bass Preamp known from MM bass guitars, converted into an effect pedal.

Steel String

Steel String is a clean drive based on JFET J201 transistors.

SRV Tube Screamer

This is a classic Tube Screamer with the modifications made to the SRV.

Purple Plexi

This is a high gain overdrive emulating the classic JTM45 sound.