ECC40 radiorør, audiorør

Nos Mullard La Radiotechnique, Suresnes ECC40 radiorør selges kr350 pr stk.

Sender for kr70, målinger se bilder.

http://www.r-type.org/pdfs/ecc40.pdf

Litt historie👇

The miniature ECC40 is one of Mullard's first glass-built designs. Made up of exactly two independent triodes, it is perfect for any type of use, instrumental and in particular Audio, where it has found numerous applications, even for its low microphonicity. Its precursor is the 6SN7 and successor the ECC82 and E80CC.

EQUIVALENCE: CV3884 / AA61

https://www.oldsound.it/en/prodotti/thermoionic-valves/640-ecc40-philips-la-radiotechnique-manufacture-cv3884-aa61-valve-historical-double-triode-audio-preamplifier-nos-nib.html

To my point of view, ECC40 is one of the best double triodes for audio use. Small problem is B8A Rimlock socket. Almost all versions are round plates and silver plated pins! Characteristics are very interesting, somewhere between ECC82 (12AU7) and ECC83 (12AX7) and almost all ECC40 I tested are low microphonics. In phase splitter aplications this tube is simply unbeatable!!!

I transformed my Williamson amplifier with 807 (EL34 / 6CA7) KT66 and now use just one ECC40 instead of two 6SN7GT with great results.

Kopi:https://www.tubes.rs/ecc40-cv3884/

The ECC40 is a tube with characteristics between the ECC82 and the ECC83. It has a Rimlock socket.

The genuine ECC40 tubes have silver plated connectors (which usually look a little bit dirty).

The ECC40 can be found in several Siemens power amps and preamps. In the later tube amps the ECC40 tubes were changed for ECC82s or ECC83s.

Kopi:http://www.tube-classics.de/TC/Tubes/Common%20ECC40/ECC40.htm

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