[Martin] seems to have a knack for locating lightly damaged second-hand audio gear ... recent project involved fixing two broken tweeter speakers. He first he needed to test the tweeters.

As of Feb. 13, the Marshall Middleton portable Bluetooth speaker (black and brass) is on sale for only $175.25 at Amazon, reduced from its typical price of $299.99. That's a whopping $124.74 ...