Allen & Heath ZED-428 28-Channel 4-Bus Analog Mixer with USB Connection

The Allen & Heath ZED-28 is a 28-channel analog mixer offering versatile I/O and a user-friendly workflow for use in home and project studio recording, houses of worship, and live sound reinforcement. The 24 mono channels feature Neutrik XLR mic and 1/4" line inputs, DuoPre preamps with phantom power and bountiful gain, 1/4" insert points, and 4-band EQ with sweepable mids, while the two stereo channels have 1/4" inputs and 4-band EQ with fixed mids. All channels are equipped with long-throw 100mm faders, solo and mute buttons, and independent aux send knobs. The six aux sends are ideal for routing to floor monitors and outboard time-based effects. A USB 1.1 port delivers 2-channel send and return capabilities via a Mac or Windows computer. There are stereo and mono main outputs in addition to four group outputs, two matrix outs, and two headphone outputs; multi-segment LED meters clearly indicate your group and main output levels. Patch additional stereo sources into the RCA stereo returns and 2-track input. The 2-track RCA output is handy for recording your mix to an external device such as a cassette deck or computer soundcard. The ZED-28 also boasts an external talkback mic input with an adjustable level and the ability to route the talkback signal to the first four aux's or to all main outputs. 24 Mono Inputs There are 24 mono input channels with Neutrik connectors—XLR for balanced mic signals, and 1/4" for balanced/unbalanced line-level sources Two Stereo Inputs The two stereo input channels feature 1/4" connectors to accommodate stereo devices such as keyboards, synth modules, and external effects processors Flexible EQ Section Based on the acclaimed GL2400 EQ, all mono channels feature 4-band EQ with sweepable midrange bands, while the stereo channels offer 4-band EQ with fixed frequencies on all bands Inserts Inserts on all mono channels, the group outputs, and the main outputs provide easy integration of analog outboard gear such as hardware compressors and equalizers Direct Outputs 1/4" direct outputs on all mono channels enable simple routing to a multi-track recorder Independent Aux Sends Six auxiliary sends—two pre-fader, two post-fader, and two switched pre- or post-fader— with independent level controls allow versatile signal routing to cue mixes, floor monitors, and external effects processors 4-Bus Group Outputs Four group outputs can be used for easy control of submixes, or for applying signal processing such as compression to groups of signals using the group insert connectors USB Connection A USB 1.1 port allows direct connection to Mac and Windows computers for stereo audio I/O Flexible Outputs The ZED-428 offers balanced XLR main outputs (stereo and mono) with inserts, 1/4" and 3.5mm stereo headphone outputs, and two matrix outputs Integrated Talkback Facilities Connect an external mic to the XLR talkback mic input, then send it to the first four aux outputs or to all main outputs Features 4 Bus Mixer for Live Sound and Recording 24 mic/line channels with inserts 2 stereo channels 2 in / 2 out USB audio interface 6 aux sends (2x pre, 2x post, 2x pre/post) 4 sub groups XLR main outputs with insert points 4-band EQ with sweepable mid 7×2 matrix Durable 100mm faders Specs Number of Analog Input Channels 28 Number of Mic Preamps 24 Analog Output Channels 1x Stereo Master Output1x Mono Master Output4x Mono Bus/Subgroup Output6x Mono Aux Send Output2x Mono Matrix Output1x Stereo Tape/Record Output1x Stereo Headphone Output Show More Built-In Effects No USB I/O 1x USB-B 1.1() Rack Mountable No Mixer Number of Analog Input Channels 28 Number of Mic Preamps 24 Analog Output Channels 1x Stereo Master Output1x Mono Master Output4x Mono Bus/Subgroup Output6x Mono Aux Send Output2x Mono Matrix Output1x Stereo Tape/Record Output1x Stereo Headphone Output Faders & Level Adjustment 3.9" / 100 mm Channel Fader Meters Main Meter:2x 12-Segment LEDBus Meter:4-Segment LEDChannel Meter:2-Segment LED Signal Processing Gain/Trim Range Mic Input:-6 dB to +63 dBLine Input:-10 dB to +26 dBStereo Input:-∞ to +10 dBFader:-∞ to +10 dBReturn:-∞ to +10 dBAux:-∞ to +10 dBMatrix:-∞ to +6 dB EQ Parameters Mono Channels:High: ±15 dB at 12 kHz (Shelving)Hi-Mid: ±15 dB at 500 Hz to 15 kHz (Notch/Peak)Lo-Mid: ±15 dB at 35 Hz to 1 kHz (Notch/Peak)Low: ±15 dB at 80 Hz (Shelving)Stereo Channels:High: ±15 dB at 12 kHz (Shelving)Hi-Mid: ±15 dB at 2.5 kHz (Notch/Peak)Lo-Mid: ±15 dB at 250 Hz (Notch/Peak)Low: ±15 dB at 80 Hz (Shelving)Mono Channels:High: ±15 dB at 12 kHz (Shelving)Hi-Mid: ±15 dB at 500 Hz to 15 kHz (Semi-Parametric)Lo-Mid: ±15 dB at 35 Hz to 1 kHz (Semi-Parametric)Low: ±15 dB at 80 Hz (Shelving)Stereo Channels:High: ±15 dB at 12 kHz (Shelving)Hi-Mid: ±15 dB at 2.5 kHz (Notch/Peak)Lo-Mid: ±15 dB at 250 Hz (Notch/Peak)Low: ±15 dB at 80 Hz (Shelving) Filters High-Pass: 100 Hz, 12 dB/Octave Solo/Mute Mute, PFL per Input ChannelMute, Solo-in-Place/AFL per BusMute per Master Built-In Effects No Digital Audio Sample Rates 32 / 44.1 / 48 kHz Bit Depth 16-Bit Performance Headroom Analog: +21 dBUSB I/O: +14 dB Frequency Response Mic Input to Main Output:20 Hz to 20 kHz +0.5/-1 dB (30 dB Gain)Line Input to Main Output:10 Hz to 30 kHz +0.5/-1 dB (Unity Gain)Stereo Input to Main Output:10 Hz to 30 kHz +0.5/-1 dB Max Input Level Mic Input:+17 dBuLine Input:+30 dBu (Mono)Insert Return:+21 dBu Output Level XLR Main Output:+4 dBu (Nominal)+27 dBu at Max GainGroup Output:+4 dBu (Nominal)+27 dBu at Max GainAux Output:-2 dBu (Nominal)+21 dBu at Max GainMatrix Output:-2 dBu (Nominal)+21 dBu at Max GainInsert Send:-2 dBu (Nominal)+21 dBu at Max GainTape/Record Output:0 dBu (Nominal)+21 dBu at Max GainDirect Output:0 dBu (Nominal)+21 dBu at Max Gain EIN -127 dBu at Max Gain (150-Ohm Input) Noise Floor Main Output:-89 dB (24 Channels Routed, Ref +4 dBu, 22 Hz to 22 kHz)-85 dBu (24 Channels Routed, Ref +4 dBu, 22 Hz to 22 kHz) THD+N Mic Input to Main Output:0.004% at Unity Gain (+10 dBu, 1 kHz)Mic Input to Main Output:0.014% at +30 dB Gain (1 kHz)Line Input to Main Output:0.005% at Unity Gain (0 dBu, 1 kHz)Stereo Line Input to Main Output:0.003% at Unity Gain (+10 dBu, 1 kHz) Connectivity Analog Inputs 1x Stereo RCA Coaxial 2-Track Input1x XLR 3-Pin Balanced Talkback Input2x Stereo RCA Coaxial Unbalanced Aux/Line Input24x 1/4" TRS Unbalanced Channel Insert4x 1/4" TRS Unbalanced Subgroup Insert2x 1/4" TRS Unbalanced Stereo Main Insert1x 1/4" TRS Unbalanced Main Insert24x XLR 3-Pin Balanced Mic Input24x 1/4" TRS Balanced/Unbalanced Line Input4x 1/4" TRS Balanced/Unbalanced Line Input (2 Stereo Pairs) Analog Outputs 1x 1/4" TRS Headphone Output1x 1/8" / 3.5 mm TRS Headphone Output1x Stereo RCA Coaxial Unbalanced 2-Track Output24x 1/4" TRS Balanced Direct Output3x XLR 3-Pin Balanced Main Output4x 1/4" TRS Balanced Subgroup Output2x 1/4" TRS Balanced Matrix Output6x 1/4" TRS Balanced Mono Aux Send Phantom Power +48 V (Selectable on Individual Inputs) USB I/O 1x USB-B 1.1() USB I/O Capacity 2x Input / 2x Output Power AC Input Power 100 to 240 VAC, 50 / 60 Hz Power Consumption 60 W (Maximum) Physical Rack Mountable No Dimensions 36.6 x 5.1 x 22.1" / 93 x 12.9 x 56 cm Weight 40 lb / 18.1 kg Packaging Info Package Weight 62 lb Box Dimensions (LxWxH) 42 x 22 x 10.8"