Research-based review — not personally tested

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.

Blackstar ID:Core 20 stereo practice amp
Photo by Morriscollege420 on Wikimedia Commons
Where to buy — around $199

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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 →