Soundcraft GB4-32 - 32-Channel Analog Mixing Console with 7x4 Output Matrix and 8 Auxiliary Sends/4 Sub Groups in Dark Blue Finish

The Soundcraft GB4-32 is a 32-channel analog mixing console designed to meet the demands of professional audio engineers in live sound, installation, and small touring systems. Created to celebrate Soundcraft's 30th anniversary, the GB4-32 is equipped with the legendary GB30 mic preamps and EQ, engineered by Graham Blyth, ensuring the highest level of audio performance and fidelity. This mixing console combines precision engineering, robust construction, and a versatile feature set, making it ideal for churches, performance venues, and other installed sound environments, as well as smaller touring applications.

Built to withstand the rigors of regular use, the GB4-32 features a rugged steel chassis with individually vertically-mounted PCBs for each input module, secured to the steel front panel with individually-nutted potentiometers. This design ensures long-term reliability and mechanical stability under strenuous conditions. The console also boasts a sloping rear connector panel, making it easier to access the connections from the front of the desk, perfect for quick adjustments during live performances or setup in a permanent installation.

The GB4-32 offers a 32-mono input configuration, each equipped with high-performance GB30 mic preamps that deliver excellent headroom, low noise, and pristine audio quality. The 4-band GB30 EQ with sweepable hi-mid and lo-mid bands provides precise tonal shaping for each channel, allowing the engineer to achieve a balanced and clear mix. The console is also equipped with two stereo input channels and direct outputs on all mono channels, making it versatile for live recording or routing to external effects processors.

In terms of routing and output flexibility, the GB4-32 is equipped with a 7x4 output matrix, allowing multiple signal feeds from the group buses and the main L, R, and C (mono) outputs to be routed to four independent outputs. This is ideal for creating custom mixes for different zones, feeds, or recording. The GB4-32 also features 8 auxiliary sends for monitor mixes or effects, and 4 subgroups (paired in stereo) with a unique feature that allows users to adjust the stereo width of the subgroup signal independently of the mix bus. This feature is especially useful for adjusting the spatial characteristics of the mix on the fly.

One of the standout features of the GB4-32 is its 4 mute groups, allowing multiple channels to be muted simultaneously with the touch of a button, adding convenience for live sound engineers managing multiple inputs. Additionally, the console has a built-in limiter on the record output, ensuring distortion-free recordings of the main mix. The dual-mode topology, originally introduced on the MH3 and MH4 consoles, allows the GB4-32 to be used for front-of-house or monitor duties, with fader control over group or auxiliary outputs. An external power supply link option further enhances the reliability of the system for critical live sound applications.

The Soundcraft GB4-32's comprehensive feature set, combined with its robust construction and intuitive design, makes it an excellent choice for professional audio applications where sound quality, flexibility, and durability are paramount. Whether for permanent installations or portable sound systems, the GB4-32 delivers the high performance and reliability that Soundcraft is known for.

Features

• 32 mono input channels with GB30 mic preamps and 4-band GB30 EQ for precise audio control
• 7x4 output matrix for flexible routing of signals to multiple zones or outputs
• 8 auxiliary sends for monitor mixes and effects
• 4 subgroups (stereo pairs) with adjustable stereo width for better spatial control
• Direct outputs on all mono input channels for live recording or external processing
• 4 mute groups for muting multiple channels simultaneously
• Limiter on the record output for distortion-free mix recordings
• Dual-mode topology for front-of-house or monitor mixing duties
• Rugged steel chassis with individually vertically-mounted PCBs and individually-nutted potentiometers
• Sloping rear connector panel for easy cable access from the front of the console
• Integral power supply with external power supply link option for added reliability
• All metal TRS jacks and Neutrik XLR connectors for durable signal connections
• 12-segment LED output metering for accurate monitoring of levels
• Weight: 70.5 lbs
• Dimensions: 51.17 x 25.83 x 6.26 inches

Specifications

• Noise (Measured RMS, 22Hz to 22kHz Bandwidth)
  • Mic E.I.N. @ unity gain,150W source impedance: -128dBu
  • Mix Output, 40 inputs routed to mix: <-82dBu
  • Group Outputs: <-83dBu
  • Aux Outputs: <-80dBu
  • Matrix Outputs: <-89dBu
• Crosstalk (@1kHz, typical)
  • Input Channel Mute: <-97dB
  • Input Fader cut-off: <-95dB
  • Pan isolation: <-77dB
  • Mix route isolation: <-97dB
  • Group route isolation: <-97dB
  • Adjacent channel crosstalk: <-99dB
  • Group to Mix: <-89dB
  • Aux Send pots offness (typical): <-84dB
  • Matrix Send pots offness (typical): <-89dB
• Frequency Response
  • Mic/Line Input to any output, 20Hz - 20kHz: <1dB
• THD + N
  • Mic sens. -30dBu, +20dBu at all outputs @1kHz: <0.006%
• CMRR
  • Typical @ 1kHz: 80dB
• Input and Output Max Levels
  • Mono & Stereo Mic Inputs: +15dBu
  • Mono & Stereo Line Inputs: +30dBu
  • Stereo Returns & Insert Returns: +20dBu
  • Any output: +20dBu
  • Nominal Operating Level: 0dBu
  • Headphone Power: 2x250mW into 200W
• Input and Output Impedances
  • Mic Inputs: 2kW
  • Line Inputs and Stereo Returns: 10kW
  • Input channels Insert Return: 5kW with EQ in, otherwise 3kW
  • Mix, Group, Aux, Matrix & Direct outputs: 150W
  • Insert sends: 75W
  • Recommended Headphone Impedance: 50 - 600W
• EQ
  • HF: 13kHz, +/-15dB, 2nd order shelving
  • Hi-Mid: 550Hz - 13kHz, +/-15dB, Q=1.5
  • Lo-Mid: 80Hz - 1.9kHz, +/-15dB, Q=1.5
  • LF: 80Hz, +/-15dB, 2nd order shelving
• Weight: 70.5 lbs
• Dimensions: 51.17 x 25.83 x 6.26 inches