Gerhard Haas (8)

| Thanks to its robustness, the legendary EL156 audio power pentode has found its way into many professional amplifier units. Its attraction d...

| In this semiconductor age, we find valves being used increasingly often for hi-fi and guitar amplifiers, top-end condenser microphones and s...

| Thanks to their pleasant sound, valve-type power amplifiers continue to enjoy uninterrupted popularity. With such an amplifier, you can elim...

| In spite of CDs and digital audio signal processing, there are still people who are devoted to the vinyl phonograph record. And they enjoy t...

| Those who spare no expense for perfection, can now exchange their volume potentiometers for high precision step resistor switches.High-grade...

| Once you’ve stuffed all the boards that go into the design, the Valve Preamplifier is ready for assembling and wiring. The results (see pict...

| You should use only the best components to build a high-end amplifier, if you want to achieve and maintain the specified performance figures...

| The good old valve amplifier is experiencing a renaissance. Consequently, we present a valve preamplifier that unquestionably belongs to the...