AUDIO VALVES

Under construction

MOST POPULAR VALVES USED IN OLD GUITAR AMPS INCLUDE:-

Output Valves EL84, EL34, 6L6, KT66, KT88, 6550.An amp with equally matched output valves correctly biased usually will sound a lot better.

EL84 / 6BQ5

el84data

Used in old valve amps such as VOX AC10, AC15, AC30

EL34

el34data

Used in old amps including VOX AC50, AC100, Marshalls various, Sound City 120, Selmer, Hiwatt.

el84data

6L6

Used especially on old certain Marshall and Park, Fender and others. Has a much smoother sound than the EL34 generally

KT66

KT66 used in various guitar and hi-fi amps ie Messa Boogie, Quad etc. 6L6 can do a similiar function but the KT66 is generally a better valve. The KT66 is a favorite especially for hi-fi applications. The GEC varient is one of the most sought after output valves.

KT88

el34data

Used in Marshall Major, Simms Watts, Park75 and others

ECC83, ECC82, ECC81, EF86

el34data

Pre amplifier valves 7025, ECC83, ECC82, ECC81, & EF86. Best to use low noise ones especially for high gain applications.

SCREENING CANS FOR HIGH GAIN PREAMP VALVES

Screening cans are needed especially for high gain preamp stages to reduce instability for ECC83, EF86 and other B9A preamp valves.

Rectifier valves GZ34 and EZ81 are the most common ones used. A selection of various rectifier valves shoun below

GZ34, EZ81 and others

Guitar amps most sought after such as the Vox AC30 (JMI) have valve rectifiers rather than semiconductor diodes. Generally get a much better sound on guitar.

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