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Cornell Plexi 18/20 Head

£1,195.00 £999.00

1 in stock

About the Cornell Plexi 18/20

The Cornell-Plexi 18/20 is made to the basic circuit of the PA20 Plexi panel which was produced in the 60s. Additional Cornell design features like the switchable valve rectification and power reducer are fitted as standard.

Complementary push-pull class “A” output has been used in many renowned amplifiers throughout the history of guitar amplification. The problem with this basic circuit, which has remained common to all manufacturers with some minor differences, was one of unequal current flow through each output valve and unacceptable crossover distortion. At high output levels the problem is accentuated and results in a fuzzy sound.

Channel One:
Hi & Lo inputs
Volume
Tone

Channel Two:
Hi & Lo inputs.
Volume.
Tone

Switch:
18/20 (Rectifier)
Mains (On/Off)

Class A Push pull Cathode bias.

Valve Complement:
2 x ECC83
2 x EL84
1 x GZ34

Output:
High 20 watts
Low 5 watts
8 & 4 ohms jacks