Ray -

You once asked me to comment on the Peterson Strobo-Clip HD.

I've always found it excellent. As well as its incredible 0.1 Cent accuracy, it has "sweetener" tuning modes.

It's an expensive bit of kit - and, of course, if you have a well-trained ear, some would argue that you don't need it.

That said, as a clip-on, it's hard to beat, and I have 3!

-F