This consists of:
- TL/10 (1954-7) (not called Plus but it is 'ultra-linear', see below)
- TL/12 Plus (1957-67)
- TL/25 Plus (1957-67)
- TL/50 Plus (1957-68)
These are all 'ultra-linear' amplifiers, i.e. using pentodes with a tapped screen winding in the output transformer. Power and efficiency are up and price is down as compared to the TL series.
We service all Leak valve amplifiers at a fixed price per channel. We specialize in undoing prior modifications by well-meaning amateurs, or in some cases professionals, and restoring them to factory condition.