Tubes : Ruby Tubes by JJ : 5U4G Rectifier tube
Tubes : Ruby Tubes by JJ : 5U4G Rectifier tube
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Ruby Tubes 5U4G Rectifier Tube is a large envelope rectifier tube for natural tube compression -(aka "sag") with a smooth feel.
Ruby Tubes 5U4GCZ Rectifier Tube is an excellent replacement for Mesa Rectifier series amplifiers.
All RUBY™ Tube power tubes come already matched. There is no extra charge for this service. Our matching process is very exact and our tubes are matched within +/- 1 mA (milliamp) of each other.
All tubes are further QC checked on our own B&K equipment ,and tested here in Cornwall ,in our own shop ,to assure they meet specs.
Due to ongoing supply chain issues and tube shortages,call or email beforehand to confirm availability and current pricing