I was surprised by how well this tube pedal works. I used my practice “Gibson Maestro practice amp” as a start up when I received pedal by mail. I got a way better tone right away when I put mini amp in clean. I used my other “Orange Amplifiers MT20 Micro Terror” on my Peavey Supreme 4×12 cab but had to tweak out volume on both ends of amp and pedal. It’s great on just pure tube sound.
Over all, I myself bought the pedal for just that tube sound for classic rock and early heavy metal. It’s other sister pedal “Zapped “Up Yours” Analog High Voltage Electro- Harmonix Tube Distortion Pedal” sounded good on YouTube videos also but I opted for tube sound. Hope this helps