I put one in the V1 slot of my GT Soul-O 45 and I have to say I was very impressed! This Russian re-issue tube is the most musical 12ax7 I´ve ever tried!
Previously I´ve had mostly JJ ECC803s, JJ ECC83s in that slot (have also tried a JJ 12at7 and a NOS GE 5751) but this one beats them hands down. The sound is very balanced, with all the frequencies clearly audible. It´s bright in a VOX-kinda way, yet the lows/low mids growl like a Marshall and the highher mids are beautifully compressed like an old Fender Super Reverb. Clean sounds are a dream.
Also, it takes pedals very well.. My SparkleDrive, MI Audio Blues Pro and Tube Zone all sound great through it. Bass doesn´t fart out when playing high gain and the dynamics are excellent when in the ts808 territory.
It´s supposed to be very high gain but with my amp it stays very clean, when adding gain from the amp it just gets more dynamic without distorting at all.
I´ve never heard such a difference after a single preamp tube swap. Highly recommended!
Previously I´ve had mostly JJ ECC803s, JJ ECC83s in that slot (have also tried a JJ 12at7 and a NOS GE 5751) but this one beats them hands down. The sound is very balanced, with all the frequencies clearly audible. It´s bright in a VOX-kinda way, yet the lows/low mids growl like a Marshall and the highher mids are beautifully compressed like an old Fender Super Reverb. Clean sounds are a dream.
Also, it takes pedals very well.. My SparkleDrive, MI Audio Blues Pro and Tube Zone all sound great through it. Bass doesn´t fart out when playing high gain and the dynamics are excellent when in the ts808 territory.
It´s supposed to be very high gain but with my amp it stays very clean, when adding gain from the amp it just gets more dynamic without distorting at all.
I´ve never heard such a difference after a single preamp tube swap. Highly recommended!