Vintage Amperex Bugle Boy 12AU7 Short Plate Tube Amp Amplifier Quad $57.88 USD Sold on: 2012-Nov-26 Marketplace: eBay 3 Treasure 0 Trash 100% Detail: Here is a quad of used Amperex Bugle Boy 12AU7 tubes. They test good on my on my B&K 707 tube tester with no gas or shorts..Due to past experiences with buyers plugging new tubes into broken ampli... More Relevance Historical Items
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