United Kingdom
One knob that changes the amplifier’s character
Blackstar is on this site twice, in the same family, ten and fifteen watts apart. Both pages make the same argument against the obvious alternative.
ISF is a genuinely different control. Instead of adjusting treble and bass, it sweeps the amplifier’s whole voicing between a British character — tighter, more midrange — and an American one, which is cleaner and more scooped. One knob covering ground that usually requires a second amplifier.
The delay is built in. Delay is the first effect nearly every beginner wants and the first pedal most of them buy. Having it in the amplifier removes that purchase for a year or more.
Both keep the practical sockets. A headphone output for silent practice and an MP3/line input for playing along, which is what decides whether an amplifier gets used in a flat.
Price spreads are the thing to check. The Debut 15E stood well above its German price on the French store at the time of writing, and had no US offer.
10 W · ISF tone control · tape delay · headphone and line in
The same 10 W class as the Fender, with two things it does not have: Blackstar’s ISF control, which sweeps between British and American voicings, and a built-in tape-style delay.
Best for: A first amp for someone who already knows they want effects.
≈ $120
15 W · ISF · delay · headphone and line in
The 15 W Blackstar: the same ISF control and built-in delay as the Debut 10E, with half again as much power for a room that is bigger than a bedroom.
Best for: A living-room amp that still has to be usable in headphones at night.
