Soundcraft GB4 - Mixing console with microphone preamps and EQ GB30

Soundcraft GB4 – Analogue mixer with GB30 preamps and 4-band EQ

The Soundcraft GB4 is a high-performance analog console designed by Graham Blyth to celebrate the brand's 30th anniversary. Available in configurations of 16 to 40 mono channels plus 4 stereo channels and 4 stereo returns, each mono channel features the GB30 preamp and a precision four-band parametric EQ. Its dual-mode topology allows the faders to be assigned to control group or auxiliary buses, adapting to FOH or monitor duties with a single touch. It features 8 auxiliary sends (pre/post selectable), 4 paired group outputs, 4 mute groups, dedicated limiters on record outputs, a 7x4 matrix for secondary mixes, direct outputs on each channel, and a meter bridge with classic-style VU LEDs. The rugged steel chassis with slanted rear connector panel and internal power supply with an external PSU link ensures reliability for touring and installations.

Main features

• Formats from 16 to 40 mono channels + 4 stereo channels and 4 stereo returns.
• Graham Blyth designed GB30 preamplifiers with high linearity and low noise.
• Four-band parametric EQ per mono channel: HF shelving, sweepable Hi-Mid, sweepable Lo-Mid and LF shelving.
• Dual-mode topology : faders assignable to control 8 groups or 8 pre/post auxiliaries on the fly.
• 8 aux sends with pre/post switching on channels 1–24; fixed stereo sends.
• 4 paired group outputs for monitors or submixes.
• 4 mute groups to mute multiple channels simultaneously.
• Limiters on Record and Alternate outputs for stereo recording without clipping.
• 7×4 output matrix fed from groups and main L/R/C outputs.
• LED VU meter bridge with three columns for L/C/R and 12-segment output meters.
• Direct outputs on all mono channels for recording and external racks.
• Neutrik XLR and TRS connectors on inputs, outputs and sends.
• Steel chassis with sloping rear panel for quick front access.
• Internal auto-ranging power supply with link to external backup PSU.

User benefits

• FOH/Monitor Versatility: Instantly switch modes without switching consoles.
• High-fidelity sound: GB30 preamps and EQ designed for transparency and musicality.
• Streamlined workflow: Quick access to sends, groups, and mute groups from the panel.
• Integrated recording: limiters on dedicated outputs prevent distortion in stereo captures.
• Mechanical reliability: Rugged construction and dual PSU for demanding environments.

Use cases

• Churches and places of worship that require flexible routing and internal recording.
• Small touring and traveling companies with FOH and monitor needs in a single unit.
• Medium-sized theaters and event halls.
• Broadcast or mobile studios that require secondary mixes and direct outputs.
• Conference rooms and corporate auditoriums.

Frequently Asked Questions

• How do I switch between FOH and monitors? Press the Dual-Mode button to assign the faders to groups or auxes.
• Can I record internally? Yes, use the Record/Alternate outputs with a dedicated limiter.
• What cabling format does it use? Neutrik XLR for microphones, TRS for line/insert, optional DB25 for direct channel.
• Can a backup PSU be added? Yes, using the rear link connector on the internal power supply.

Description for projects

Soundcraft GB4 7-bus analog mixing console with GB30 preamps and 4-band EQ on 16–40 channels, 8 pre/post auxes, 4 groups, 4 mute groups, record output limiters, 7×4 matrix, direct outputs, LED L/C/R VU meters, dual-mode topology, steel chassis with autoranging PSU and external power link.