AVO CT160

This is one of the fastest and most conveniet tubes testers from the golden era of tubes.

Has fast static test and Gm test for matching tubes. One of the very few testers to use a single switch to test both sides of common twin triodes like 12AX7, 12AU7, 6DJ8 etc.  Best of all this is our own, fully refurbished and calibrated unit now surplus to our needs.  (Even if you find a cheaper unit it will probably cost you $500-$700 to have it brought up to this sort of top working order.)