ECC83S is 12AX7 high gain pre-amplifying double triode. Thanks to its design it also performs with very low noise and microphonics. Harmonically rich, with a detailed low end and a warm high end.

JJ Electronics EL34 Apex Matched Pair Power Tubes. EL34 is an octal power tube with a maximum plate power of 25W. Very robust and reliable due to its internal construction.

All materials used in tube production undergo a meticulous cleaning process such as ultrasonic cleaning, annealing in protective atmosphere and reactive rinsing. The assembly process is carried out by a combination of meticulous manual operations and state-of-the-art production procesess.

All vacuum tubes go through an extended burn-in period to ensure superior stability. A rigorous final test for every important parameter. In particular, the parameters for flawless tube functioning include insulation characteristics, vacuum level, cathode emission efficiency, filament voltage, plate currents, and microphonics. The quality control process includes several thousand hours of reliability testing on samples of tubes.