JJ TESLA
The standard output tube in the classic Quad II (1952, a version of which is still being manufactured today) and in the Leak 15 (1945) and TL/12 (1948), both among the earliest British hifi amplifiers.
The standard output tube in the classic Quad II (1952, a version of which is still being manufactured today) and in the Leak 15 (1945) and TL/12 (1948), both among the earliest British hifi amplifiers.