These tubes are high gain, preamp tubes specialized for guitar amplifiers. I’m a big fan of these tubes. They have just enough harmonic complexity to sound perfect for a guitar amplifier. One of these tubes is testing very high and was actually sold as a ruby tubes marketed HG series for the high gain series and it’s testing super strong.
Item Tag: 12AX7/ECC83S
Matched Pair JJ Electronic NIB ECC83S/12AX7 Guitar Amp Preamp Electron Tubes NOS
These tubes are high gain, preamp tubes specialized for guitar amplifiers. I’m a big fan of these tubes. They have just enough harmonic complexity to sound perfect for a guitar amplifier. One of these tubes is testing very high and was actually sold as a ruby tubes marketed HG series for the high gain series and it’s testing super strong.
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ECC83S/12AX7/7025 JJ Electronic Gold Pin Halo Getter Premium Guitar Preamp Tube
This tube is a ECC83S tube issued through JJ. Long grey ladder plates raised halo getter. JJ electronic. this Tube was tested on the Jackson model 103 where a typical NOS Tube will have a test result of around 38-40 and the minimum good value is 25.