I just scored an Antique Sound Labs HB-1 OTL headphone amp that uses two 6BQ5's and it is really a sleeper soundwise. If you decide to buy a headphone amp that uses two of those Amperex, I'd consider buying the other pair. I'm using a pair of Sylvania blackplates right now and some Mullards are on the way, but those Amperex come VERY highly recommended.
Neil
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Neil
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