Soundcraft GB8-40 40-Channel Mixer

6.300,00 (including VAT @ 19%)

This product is currently not available for purchase

  • 40-Channel Analogue Mixer
  • 4 Stereo Channels
  • 8 Fixed Send (Group) Buses
  • 8 Variable Send (Aux) Buses
  • 4 EQ Bands

Soundcraft GB8-40 40-Channel Mixer

The Soundcraft GB8-40 40-channel mixer is designed to provide high fidelity audio and advanced mixing capabilities for use in performance venues. It can be used on Front of House or monitor duties, thanks to its dual-mode topology with fader control of group or aux outputs. Configured with 40 input channels, the GB8-40 offers a high level of versatility whilst delivering the sonic quality expected of more costly consoles.

Product Ref: 38502

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Simultaneous Channel Editing

The Soundcraft GB8-40 40-Channel Mixer has four full-function stereo channels and four stereo returns. There are four mute groups to allow several channels to be muted simultaneously, and stereo recordings of the mix are easier to create thanks to the limiter on both the Record and Alternate stereo outputs. The GB8-40 features 40 inputs: microphone and line level connections, as well as an additional 4 stereo inputs for added convenience. Also featured on the GB8-40 are Soundcraft's GB30 microphone preamplifier's to provide an ultra low-noise floor while maintaining high output gain, a desirable feature for professional audio mixing and mastering scenarios.

Simple Configuration

The Soundcraft GB8-40 40-Channel Mixer supports an output matrix with eleven feeds to four outputs, being fed from the eight group buses and the main L, R and C mono outputs. The rear connector panel slopes, making it easier to configure from the front of the desk, and the integral power supply has a link option for an external back-up PSU. The GB8-40 also features an integrated LED and VU meter bridge to provide a functional level of visual feedback for accurate monitoring of input and output levels, allowing you to stay in control of your audio.

Reliability Ensured

Ruggedly-built, the GB8-40 is designed to be reliable under the most strenuous conditions, with all input modules constructed with individual vertically-mounted PCBs fitted to the steel chassis front panel with individually-nutted potentiometers.


  • Analogue/Digital: Analogue
  • Frame Size: 40
  • Stereo Channels: 4
  • Digital I/O: No
  • FX Processors: 0
  • Fixed Send (Group) Buses: 8
  • EQ Bands: 4
  • Variable Send (Aux) Buses: 8
  • Returns: 5
  • Direct Outputs: Yes
  • Matrix Buses: 4
  • Main Bus Out: LRC


  • Total Inputs : 40 Total
  • Mic/Line Inputs:
    • 40 Line: 1/4" TRS Phone
    • 40 Microphone: 3-pin XLR
  • Stereo Line Inputs: 4 Stereo: L/R Paired 1/4" Phone Line & 3-pin XLR Microphone
  • In-Line Inputs/Returns: No
  • AUX Sends: 8 Aux Sends
  • AUX Returns: 4 Stereo Returns
  • Inserts: 1/4" TRS Phone - Mono Inputs, Main Output and Subgroup Outputs
  • BUS (Group) Outputs: 8 Subgroups: Balanced 3-pin XLR
  • 2 Trk Master I/O: Mix L/R: Stereo Paired 3-pin XLR Balanced
  • ALT I/O: ALT Stereo: L/R Stereo Paired 1/4" Output
  • Monitor Outputs: Monitor: L/R Stereo Paired 1/4" TRS Phone
  • EQ Section High Filter:
    • 13kHz, +/- 15dB, 2nd order shelving
    • Hi-Mid: 550Hz - 13khz, +/- 15dB, Q=1.5
    • Lo-Mid: 80Hz - 1.9kHz, +/- 15dB, Q=1.5
    • Low Filter: 80Hz, +/- 15dB, 2nd order shelving
  • Solo/Mute: All Input Channels
  • Channel Level Control: 100mm Faders
  • Trim/Gain Control: Rotary Potentiometers
  • Phantom Power: +48V Phantom individually switched
  • Metering:
    • Input Channels: Single tri-color 4-segment LED bargraph
    • Outputs: 11 tri-color 12-segment LED bargraphs, + Meterpod with 3 VU meters (L/R/C)
  • Frequency Response: 20Hz to 20kHz
  • Dynamic Range: Not Specified by Manufacturer
  • Signal-to-Noise Ratio:
    • Measured RMS, 22Hz to 22kHz Bandwidth
    • -128dBu Mic E.I.N. @ unity gain, 150 ohms souce impedance
    • < -82dBu Mix Output, 40 inputs routed to mix
    • < -83dBu Group & Center Outputs
    • < -80dBu Aux Outputs
    • < -89dBu Matrix Outputs
  • Total Harmonic Distortion (THD): < 0.006%Mic sens. -30dBu, +20dBu at all outputs @ 1kHz
  • Power Supply: Internal AC PSU - 85V, 270V AC, 50/60Hz universal input
  • Power Consumption: less than 150W
  • Dimensions (WxHxD): 65.59 x 9.23 x 25.83" (1666 x 235 x 656mm)
  • Weight: 88.2 lbs. (40 kg)