JJ Electronic 5751 Preamp Vacuum Tube

A.F. DOUBLE TRIODE - 5751 can be used in most 12AX7 circuits to achieve more headroom. It has a lower gain than the standard 12AX7. Good to rope the gain of a high gain amplifier.

JJ Electronic is a world-renowned manufacturer of vacuum tubes, electrolytic capacitors and high-end audio amplifiers. Founded in 1993 by Jan Jurco, a small garage business grew to become a well known and respected in music industry.

JJ vacuum tubes and capacitors are widely used in guitar and audio amplifiers, recording studio equipment and in a variety of applications for audiophiles.

They offer more than 35 preamp, power and rectifier tubes. All tubes were developed by JJ's in-house research and engineering teams. In addition, they manufacture electrolytic capacitors for different voltages, both radial and axial types. Today, JJ's manufacturing program also includes a number of high-end audio and guitar tube amplifiers.

All vacuum tubes and capacitors go through an extended burn-in period to ensure superior stability. A rigorous final test for tubes and capacitors verifies 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 and capacitors.

By using their tubes and capacitors in JJ's own line of audio amplifiers, JJ continually verify their quality and performance in the practical applications.