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The Soundcraft 400B was made in 16, 24 and 32 channel versions.

This one comprises 16 input modules, each featuring:
Input gain control, 48v phantom power switch, mic/line switch, 100Hz HPF switch, classic Soundcraft 4 band EQ with 2 mid sweeps & bypass, 4 aux controls (2 post fade, 2 switchable), insert point, pan, group & mix routing switches, channel on switch & PFL switch, 100mm fader

Output modules comprising:
VU meterbridge showing 4 groups and left & right output levels, 4 subgroups with individual outputs, inserts and panned routing to mix, 8 line returns with 2 aux sends, pan, mute, PFL and level control, 4 aux masters, each with AFL, oscillator with level, talkback mic XLR socket with routing & level control, headphone/monitor volume control.

Soundcraft 400B mixing console

Soundcaft 400B mixing console - master section

History:

Launched in 1983, the 400B replaced the Series 400, by providing more facilities at less money. It achieved this by applying skilled production engineering to the design of the console, enabling manufacturing costs to be lower than ever.
Retaining the classic 4-band sweep EQ, the 400B had 4 groups and 4 Aux sends, with a choice of input and output modules giving the same tailoring of configuration between recording, front-of-house and monitoring as had proved successful on the older Series 800.

A built-in VU meterbridge was designed not to use any extra frame extrusions, and this gave the 400B its characteristic ‘recessed’ appearance.

The 400B was to set a new record for volume production at Soundcraft until its replacement in 1985 by the Series 500 and 600.

Mic input: XLR3 balanced
Line input: ¼" unbalanced jack
2 track & line returns: +4dBu unbalanced jack
Input inserts: unbalanced TRS
Group & mix inserts: unbalanced TRS
Aux outputs: +4dBu unbalanced jack
Mix & group outputs: +4dBu unbalanced XLR

dimensions: 920(w)x710(d)x170(h)mm
flightcase: 1010 x 800 x 240mm
external power supply unit: ±17V, 48V DC

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