DIY IWISTAO Germanium Transistors Power Amplifier Board LEAK 3 Plus Tube Preamplifier

The charm and excellent tone of the germanium transistor is a typical British sound, warm and not dry. This is taste of germanium transistors more than taste of vacuum tube amplifiers.

In the heyday of audio industry in the 1970s, Germanium transistor power amplifier was launched. In the 1970s, when the audio industry was in full swing, LEAK launched several popular 15WX2 germanium transistor power amplifiers, LEAK 30, with its sound close to vacuum tube amplifier and ultra-low 0.1% distortion, shocking the audio industry. Because technology of vacuum tube amplifier at that time, it was very great that its maximum distortion could only achieve 1%, and the power of 15W was not too small for tube amplifier. Its excellent timbre, sweet vocals express British voice in details. Antique speakers used to push high sensitivity are very suitable.


The germanium transistor is 3AX63, and the metal seal transistor is 2SB449