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(!!!) (Good Value Single) ECC81=12AT7 Mullard old logo made in Hyperlec Brive France used/good (8.4/9.8ma)
(!!!) (Good Value Single) ECC81=12AT7 Mullard old logo made in Hyperlec Brive France used/good (8.4/9.8ma)
By Tube World
$ 19.99
Sorry, this product is sold out!
1 low noise tube) ECC81=12AT7 Mullard old logo made in Hyperlec Brive France used/good in white boxes 1970's (good in guitar amps and a "best value" 12AT7)
8.4ma Gm=4600
9.8ma Gm=5300
tested on Amplitrex
Good Ma range 8-10ma
Good Gm range 4500-5500
Mullard clone made in France
Hyperlec (later known as T.R.T and R.T.C.) was an electronics factory in Brive (a.k.a. Brive la Gaillarde), which is a town in the Corrèze region of France.
See more: vacuum tube
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 (Good Value Single) ECC81=12AT7 Mullard old logo made in Hyperlec Brive France used/good (8.4/9.8ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_fb7863ce-b18d-4046-8e9c-b12bbcdaf0eb.jpg?v=1605294731){kind=link}
 (Good Value Single) ECC81=12AT7 Mullard old logo made in Hyperlec Brive France used/good (8.4/9.8ma) "Pin It"){kind=logo}