Specifications - ALLEN & HEATH ZED 420 User Manual

Inputs
Mono channel (XLR) Input
Mono channel Line Input (Jack socket)
Insert point (TRS Jack socket)
Stereo Input (Jack sockets)
Stereo input (phono sockets)
2 Track Input (phono sockets)
Outputs
L, R & Mono Outputs (XLR)
L, R & M Insert (TRS Jack socket)
Group Outputs (Jack sockets)
Group Insert (TRS Jack socket)
Aux Outputs (Jack sockets)
Matrix Outputs (TRS Jack socket)
2 Track Output (phono sockets)
Direct Out (TRS Jack socket)
Analogue Headroom from nominal (0Vu)
USB in & out headroom from nominal (0Vu)
Mic in to Mix L/R Out, 30dB gain
Line in to Mix L/R out 0dB gain
Stereo in to Mix L/R out
Mic in to Mix L/R Out, 0dB gain 1kHz +10dBu out
Mic in to Mix L/R Out, 30dB gain 1kHz
Line in to Mix L/R out 0dB gain 0dBu 1kHz
Stereo in to Mix L/R out 0dB gain +10dBu 1kHz
USB Audio In/Out
Sample Rate
Mix Noise, LR out, 16 channels routed, Ref +4dBu, 22-22kHz
Mix Noise, LR out, 24 channels routed, Ref +4dBu, 22-22kHz
Mix Noise, LR out, 32 channels routed, Ref +4dBu, 22-22kHz
Mic Pre EIN @ max gain 150R input Z 22-22kHz
Allen & Heath

SPECIFICATIONS

Operating Levels
Headroom
Frequency Response
THD+n
USB Audio CODEC (Coder/Decoder)
Noise
12
+6 to –63dBu for nominal (+17dBu in max)
+10 to –26dBu (+30dBu maximum)
0dBu nominal +21dBu maximum
0dBu nominal (control = Off to +10dB)
0dBu nominal (control = Off to +10dB)
0dBu nominal +21dBu maximum
+4dBu nominal. +27dBu maximum.
-2dBu nominal +21dBu maximum
+4dBu nominal. +27dBu maximum.
-2dBu nominal +21dBu maximum
-2dBu nominal +21dBu maximum (Bal Option +4)
-2dBu nominal. +21dBu maximum. (Bal Option +4)
0dBu nominal. +21dBu maximum.
0dBu nominal. +21dBu maximum.
21dB
14dB
+0.5/-1dB 20Hz to 20kHz.
+0.5/-1dB 10Hz to 30kHz
+0.5/-1dB 10Hz to 30kHz
0.004%
0.014%
0.005%
0.003%
USB 1.1 compliant 16bit.
32, 44.1, or 48kHz
-90dB (-86dBu)
-89dB (-85dBu)
-88dB (-84dBu)
-127dBu
ZED-4 BUS User Guide