Owner's Manual for Blackstar ID:Core Stereo V4 Guitar Amplifier

Comprehensive user guide for the Blackstar ID:Core Stereo V4 series (10, 20, 40). Learn about voice settings, ISF control, effects, USB recording, CabRig Lite, and power reduction.

Quick answers from the manual

Quick answer

The ID:CORE V4 is a programmable digital guitar amplifier featuring 6 voice settings, patented ISF tone shaping, built-in effects, USB audio interface capabilities, and CabRig Lite speaker simulation. p. 4, 7

Key actions

Factory Reset p. 5
Store Patch p. 8
Engage Tuner p. 7

Problems and fixes

Amplifier unresponsive during firmware update

Force power up in Update Mode by holding Manual and MOD switches while switching on.

p. 9

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Maintenance and reset

Factory Reset p. 5

Technical specifications

Parameter	Value	Meaning	Pages
ID:CORE STEREO 10 V4 Power	10 Watts	Output power	p. 10
ID:CORE STEREO 20 V4 Power	20 Watts	Output power	p. 10
ID:CORE STEREO 40 V4 Power	40 Watts	Output power	p. 10

Where to find it in the PDF

Front Panel Controls p. 5, 6
USB Audio & Recording p. 8, 9
Technical Specifications p. 10

Table of contents

Quick Guide

The Blackstar ID:Core Stereo V4 series is a range of programmable digital guitar amplifiers designed for versatility and ease of use. These amps combine traditional, intuitive controls with advanced features like patented ISF tone shaping, built-in effects, and USB audio interface capabilities.

Front Panel Controls

Input: Connect your guitar here using a high-quality screened lead.
Voice: Select from six preamp voicings: Clean Warm, Clean Bright, Crunch, Super Crunch, OD 1, and OD 2.
Gain: Adjusts the amount of overdrive or distortion.
Volume: Controls the preamp volume.
ISF: The Infinite Shape Feature allows you to blend between American (tight, aggressive) and British (woody, less aggressive) tonal characteristics.
Effects (MOD, DLY, REV): Press to toggle effects on/off or focus them for editing.
Type & Level: Use these to select effect types and adjust parameters.
Tap: Sets the rate/time of the focused effect.
Power: Turns the amplifier on and off.

Modes of Operation

Manual Mode: The sound reflects the current physical position of the knobs. The Manual LED is lit.

Patch Mode: The amplifier uses stored settings. The Manual LED is unlit. You can store 6 patches (1 per Voice setting) by holding the Manual switch for two seconds.

Tuner Mode: Hold the Reverb switch for one second to engage. The amplifier output is muted. Voice LEDs indicate the note, and MOD/DLY/REV LEDs indicate tuning accuracy.

Advanced Features

Power Reduction: Switch between full power and 1W for lower volume practice without sacrificing tone.
USB Audio: Connect via USB-C to use as an audio interface. The amp provides four independent channels for recording and reamping.
CabRig Lite: Advanced speaker simulation for direct recording or headphones.
Independent Music Playback Volume: Hold Tap and turn Volume to adjust external music playback volume.
USB Recording Level: Hold Tap and turn Gain to adjust USB output level independently of speaker volume.

Technical Specifications

The ID:Core Stereo V4 series is available in three power configurations:

ID:CORE STEREO 10 V4: 10 Watts, 2x5W speakers.
ID:CORE STEREO 20 V4: 20 Watts, 2x10W speakers.
ID:CORE STEREO 40 V4: 40 Watts, 2x20W speakers.

Safety Information

Always use the supplied power cord. Do not block ventilation openings. Do not expose the unit to rain or moisture. Refer all servicing to qualified personnel. High loudspeaker levels can cause permanent hearing damage; use hearing protection if exposed to high levels for extended periods.

Manufacturer information

Blackstar Amplification

Brand profile

Manufacturer website Open official website Support Open support Manufacturer manuals Open manual library

Practical help

Common problems

No sound from speakers

Check if a cable is connected to the CabRig/Phones jack (this mutes the speakers). Also, ensure the amplifier is not in Tuner mode.

Firmware update fails

Ensure the amplifier is connected directly to a main USB port on the rear of your computer, not a front-mounted port, USB hub, or extension cable.

Controls do not match sound

You are likely in Patch mode. Switch to Manual mode to have the sound reflect the current physical knob positions.

Before use

Ensure the Power Switch is in the OFF position before connecting the power supply.
Use a high-quality screened guitar lead.
Allow the unit to reach room temperature if moved from a cold environment.
Connect to a main USB port on your computer for firmware updates.

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Specs in practice

Power Reduction: Reduces output to 1W for lower volume practice and recording.

Images and diagrams

Front Panel: Identifies all knobs and switches including Input, Voice, Gain, Volume, ISF, Effects, and Power.
TRRS Cable: Diagram shows the pinout for the Line In/Streaming jack (Left Audio In, Right Audio In, Ground, Streaming Out).

Model compatibility

Footswitch (FS-11, FS-18, FS-22) is supported only on ID:CORE STEREO 20 and 40 models.
Windows users require the Blackstar USB Audio Driver.
Mac users do not require additional audio drivers.

Manual page author

Emily Carter

User documentation editor

Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.