A friend of mine gave me a box full of tubes, including the Philips. All tubes were used, and this one didn't seem 100% anymore. It didn't provide enough gain. However, the tube tester indicated that this tube is alright. A second listening test made clear that this tube is more than OK. I didn't like this one in the gain hole 'though. Too many non-pleasing highs.
3/16/08
Philips Miniwatt ECC83
Audio-Voice 12AT7A
I bought this one because it has a lower mu than a 12AX7 (60 as opposed to 80-100), to tr
y it in the reverb follower or the phase inverter section, but it's also nice to try it in the gain hole. It left me with the same impression that the Chinese 12AX7A made: too direct and glassy but with less gain. Even the clean sounds weren't very pleasing.
Information from http://www.fbk.eur.nl/BIT/MHM/gear/preamptubes.html
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