*Prices incl. VAT plus shipping costs
- Part Number: S5755
New Old Stock tubes, not tested for RoHS compliance.
Only for repair and restoration of historical equipment.
I bought a matched pair for the Phonodude designed by Triode Dick. Good matching (less than 0.1 dB gain difference) and excellent sound quality. I bought another pair for my secondary system.
A secret NOS treasure! This CK-5755 is made by Western Electric as 420A (which are selling for about $100 in U.S.) but branded for Raytheon as 5755. In fact they have internals identical to 12ax7. They just need a socket adaptor (or rewiring) to achieve real U.S. made NOS 12ax7 tone in Western Electric quality. Outstanding!