Traynor TS-10 amp that I've had for years. They were issued as cheap transistor amps, I think in 80s, designed to give a tube like sound from a SS amp. They did a fairly good job at that.
I replaced the speaker which then I found out that the original speaker was in large part responsible for the tube amp sound emulation. But with a modern speaker I gained more clean headroom. Also replaced the capacitors and control knobs.
I don't know if I ever used this amp live and recently pulled it out from the storage and used it for the gig. I immediately loved the sound. The first gig was outdoors where we had a PA, second gig was at a restaurant and it was plenty loud on its own with the volume + master at halfway up. I'm in heaven with the tone. I'm using Krivo pickups (in humbucking configuration) and Nux Optima Air but only for its reverb.