Roland branded 12AX7 vacuum tube?

176 views · Published 7 March 2016 · 1:24 · Indexed 3 October 2026

Channel: Rob Cosentino · 2016 · Howto & Style

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Update. It's U.S ROLAND Radio Corp (Anderson Ave. Mt Vernon, N.Y)
http://www.diyaudio.com/forums/tubes-valves/288076-roland-branded-12ax7-tube-2.html#post4650538

I have a Roland branded 12AX7 vacuum tube that I've never seen before. I'm not sure if it's the same Roland that make Keyboards, etc. It tests fairly strong and the triodes match. Very interesting.

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