I have set of (3) matched pairs of JAN CBS/Hytron 5692 tubes made like the
famous RCA Red 5692 (some say even more musical), others say they are
identical is every way!!! These are getting harder and harder to fine.
These are NOS in original boxes and have five support rods joining the four
corners of the top and bottom mica spacers and supporting the plate
structure. Rated for 10,000 hour life filaments and are very resistant to
shock and vibration, resulting in very low microphonics. Have brown base.

These are going from $50.00 to $100.00/each (apparently on condition).
These are unused in original boxes and were purchase as matched pairs from
Angela Instruments back in the 90's. I will sell each matched pair for
$90.00 or all three pairs for $250.00, not including shipping.

These are becoming very scarce and go around $150.00 for matched pair.

Dan