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Hi everyone, it looks like not much like anyone has any info about Bellair SX-210 Amplifier, my challange is almost imposibble to find LK 4112 / E406N triode tubes, perhaps it may be possible to modify this fantastic amp using 2a3 or 300 b tubes naturally keeping the 4328D and 5u4g help will be greatly appreciated. regards.
a kind gentleman shared this info with me,,,,
Sabih, you do not need to modify it at all E406N Or lk4112 they are identical, your observation is absolutely correct these E406N Valves are rather rare but source able esp. ebay.de they are not cheap but sonically much superior to any known 300b Valves have fun with it. Regards Helmut