Blackstar ID:Core 20 V4
Rating: 4.0 / 5
A stereo practice amp with Blackstar’s clever ISF tone control and genuinely big sound for the size — a strong value alternative to the Katana.

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Pros
- Wide stereo sound
- Clever ISF tone control
- Good value
- USB recording out
Cons
- Deeper editing needs the app
- Cleans not quite Katana-level
- 20W stereo still not a gig amp
Stereo sound and the ISF trick
The ID:Core 20 runs two speakers in stereo, which makes its built-in effects sound surprisingly wide and lush. Blackstar’s ISF knob smoothly morphs between American and British voicings, giving you a lot of tonal ground from a simple control. It is a great-value first amp, especially if you want something that sounds bigger than its footprint.
Where to buy: Check the current price of the Blackstar ID:Core 20 V4 on Amazon →