Worth trying out
I recommend these for a high end guitar amp head with lots of control. These give a solid bass for amp heads with lots of bells and whistles. I'm not sure if these are best for a basic amp. I was a little searching for my clean tone. However, on the blue and red channels, the tube overdrive is solid. I could keep my setting I used for more expensive tubes, and come up with a very nice straight recording tone. Nice for sagging back a bit, as opposed to pushing modern steel gain if you have that setting on your amp. It's a nice set to have for a high end amp (said that already). Particularly when you don't need the tube to do all the work. Over-tubing a high end amp can just be confusing and start to sound garbled. Not so with this tube. Really nice to work with on the gain channels. You can go pretty bright and gainy with your preamp tubes with these. Works well with Plexi gain, not so much with Fender clean. These completely nailed it in my Suhr PT 100. So beware, over tubing a high end amp can actually sound gnarly. I suppose if you had top NOS preamp tubes, you could go with other options for power tubes. Anyway, quite nice for gain on a high end amp, a bit short on the clean channel.