The 12AX7 vacuum tube can be used in any preamp or microphone application,
The JJ Electronic 12AX7 / ECC83 has quickly become a modern classic in preamp tubes. Its rugged design and rich harmonics make this tube an obvious choice for musicians who need a reliable and high-quality tube at a reasonable price.
Rich Headrick –
Taken from Amazon.ca Customer
Reviewed in the United States on December 31, 2017
Top-notch performance at a fair price.
Color: Original Version
After using this tube in all of my guitar amps (12) both vintage (1954) and brand spanking new I can say with great confidence that this is a solid, great sounding and durable tube. I have a bevy of new and New Old Stock tubes here to listen to and the JJ 12AX7-S stands up there with the finest available. I have serviced tube amplifiers for 35+ years and I also build my own. All of my custom-built amps go out to the customers with these tubes in their preamp and phase inverter positions.
Paraducks –
Taken from Amazon.ca Customer
Reviewed in the United States on January 4, 2018
Fantastic Sound for the Price.
Color: Original Version
My amplifier came with three 12AX7’s from unknown Chinese manufacturer in the pre-amp section. I thought it sounded great. When they needed replacing I ordered the JJ’s based on reviews and because they looked like the best mix of quality and price. What a fantastic upgrade. My amp went from great to fantastic. It now produces sounds equal to those I hear in the very best demos on the internet. Will they do that for every amp? I don’t know; amps and tubes are often a shot in the dark, but these tubes work for my amp. I play mostly lead blues and was looking for something to provide classic blues overdrive sound. I can now play without any pedals though I still use them sometimes.
Steve –
Taken from Amazon.ca Customer
Reviewed in the United Kingdom on November 12, 2018
Good Quality
Color: Original Version
Used this valve in a Marshall JCM 2000 did the job