Blackstar ID:CORE V4 Stereo 20 Guitar Amp (IDC:20V4)

Blackstar ID:CORE V4 Stereo 20

A step up in power from the entry-level ID:CORE model, the Stereo 20 is designed for players who want more headroom, fuller projection, and the option to control the amp hands-free with a footswitch. Designed by the same R&D team responsible for Blackstar's professional amplifiers, it brings genuine playing-experience innovation into a compact, practice-friendly format that still delivers serious tonal versatility.

The Super Wide Stereo sound is the standout feature here. With two 5" Blackstar speakers driven by 20W of power (2 x 10W), the Stereo 20 produces a noticeably bigger, more immersive sound than smaller practice amps — genuinely inspiring to play through, whether you're working on technique at home or running it as a small gigging or rehearsal amp.

Six Voices, Real Versatility

Six distinct amp voices are built in — Clean Warm, Clean Bright, Crunch, Super Crunch, OD1 and OD2 — covering everything from pristine clean tones through to genuine high gain. Combined with Blackstar's patented ISF (Infinite Shape Feature), which lets you continuously sweep the amp's voicing between US and UK tonal characteristics, you get an amazingly versatile tonal range from a single, guitarist-friendly amp. Controls are intuitive and hands-on, while the underlying programmability gives you room to dig deeper and shape your own sounds.

Twelve onboard effects round out the package — four delays, four modulation effects and four reverbs — giving you genuine sound-shaping flexibility without needing a single pedal.

Footswitchable

Unlike the smaller Stereo 10 models in the range, the Stereo 20 is footswitchable, letting you change voices and engage effects hands-free while you play. That makes it a genuinely practical option for rehearsal and small gig use, not just bedroom practice.

Practice Without Disturbing the House

Power reduction down to 1 Watt means you can still access full amp character and tone at a volume that won't disturb the household — useful for quieter practice sessions even with the extra headroom this model offers over the Stereo 10.

Connectivity

A common TRRS cable lets you stream backing tracks or songs from your smartphone straight through the amp, so you can play along easily. Built-in USB-C connectivity allows direct recording into your computer, useful for capturing ideas or practice sessions without extra interfaces.

Blackstar's free Architect software unlocks even more from the amp, including the CabRig Lite advanced cabinet simulator, along with deep editing and patch management — useful if you want to fine-tune your tones and save your own custom setups.

Who Is It For?

This is a strong option for players who've outgrown a smaller practice amp and want more volume, projection and stereo width, along with the practicality of footswitch control. It works well as a home practice amp, a small rehearsal room amp, or a backup gigging amp where genuine tonal versatility matters.

Key Features

• 20W output — 2 x 10W Super Wide Stereo configuration
• 6 amp voices: Clean Warm, Clean Bright, Crunch, Super Crunch, OD1, OD2
• 2 x Blackstar 5" speakers
• 12 built-in effects: 4 Delay, 4 Modulation, 4 Reverb
• Patented ISF (Infinite Shape Feature) tonal control
• Power reduction down to 1 Watt
• Footswitchable
• TRRS input for streaming from smartphone
• USB-C connectivity for direct recording
• Free Architect software with CabRig Lite cabinet simulator
• Designed by Blackstar's professional amp R&D team
• SKU: IDC:20V4

Specifications

What's Included

• Blackstar ID:CORE V4 Stereo 20 Amplifier

Not Sure If This Is the Right Amp for You?

If you mainly want wireless music streaming, the ID:CORE V4 Stereo 10 Bluetooth model offers that feature at a smaller size and power output. If you'd like help comparing the two or deciding which suits your playing setup best, get in touch and we'll talk you through it.