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Reviews (4)

Apr 04, 2017
Hey, they are tires
Tires and tubes to fit old English bikes (EA3 rims). They fit. They hold air. What more do you need? I don't know why they need a review.

Mar 02, 2021
Good but broader than I expected
Nice book, though it spends a lot of time on the later models (up to SC III and S3) so the title is a bit misleading.

Feb 19, 2019
Obsolete, may or may not work, but rilly good if it does.
This is a stupid exercise. The HP331A hasn't been made for over 40 years. If you need a distortion analyzer, it is one of the best ever made, built like a battleship. But you have to find one that works--many of the parts are no longer available. I lucked out, the one I got works. Be aware that there are several different versions of this critter and the manuals available (free or otherwise) may not match, at least in the details. Good for up to 600 KHz, will reliably indicate distortion down to about 0.05% or so.