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LD Systems ZONE 624 - 19" 4-Zone Mixer 3U The LD Systems ZONE 624 is a professional 4-zone stereo mixer offering versatile audio control with 6 line inputs and 2 microphone channels. Ideal for PA systems in hotels, clubs, fitness centres, and food outlets, it delivers flexible zone management and extensive connectivity in a compact 3U rackmount design. Key Features 4-zone mixer with stereo master output and 3 mono zone outputs 6 line inputs and 2 balanced microphone inputs with 12V phantom power Talkover function with adjustable attenuation per zone USB port for stereo input/output, enabling use as an external audio interface Inputs for emergency announcements and remote-controlled mute switching Balanced XLR and terminal block outputs with individual max output level control 3-band EQ on microphone channels and master stereo output; 2-band EQ on mono zone outputs Switchable 100 Hz high pass filter on mono zone outputs Recording output and controllable PFL headphone jack for previewing Compact 3U rackmount design for easy installation Specifications Product Type: Zone Mixer Number of Zones: 4 (Master, Zone A-C) Type: Stereo Installation Height: 3U Total Input Channels: 8 (2x Mic, 1x AUX/Line, 2x Phono/Line, 2x Line, 1x FOH/Line) Frequency Response: 20 - 40,000 Hz Microphone Channels: 2 (with 12 V phantom power) Microphone Channel Connections: 6.3 mm stereo jack (2 x balanced), XLR Microphone Channel Controls: 3-band EQ, 2x gain, 2x On/Off, Talkover Microphone Channels Input Impedance: 4 kΩ Microphone Channels Input Sensitivity: 4.5 mV Microphone Channels THD: 0.08% Line Channels: 6 (Input 1: Aux/Line, Input 2 + 5: Line/Phono, Input 3: USB/Line, Input 4: Line, Input 6: Line/FOH) Line Input Connectors: RCA, 3.5 mm stereo jack, USB, 6.3 mm jack Line Channel Controls: Level, FOH On, Gain, AUX enable, Cue Line Channel Input Impedance: Phono 50 kΩ, Line 6 kΩ Line Channels Input Sensitivity: Phono 25 mV, Line 2.1 V Line Channels THD: 0.02%, Phono 0.05% Aux/Line Input Sensitivity: 3 V Line Outputs: 5 (Master - Stereo, 3x Zone - Mono, Rec - Stereo) Output Connectors Master: RCA (x2), 2 x XLR (balanced), terminal block Master Controls: 3-band EQ, Max Level, Talkover Sensitivity and Damping Master Output Levels: Balanced 24 dBu, Unbalanced 17 dBu Zone Output Connections: XLR (balanced), terminal block Zone Controls: Level, 100 Hz High Pass filter, 2-band EQ, Max Level, Source selection, Cue, Include Mic, Talkover Damping Zone Output Levels: 24 dBu (balanced/unbalanced) Recording Output: 2 x RCA Headphones Output: 1 x 6.3 mm TRS jack with Cue volume control Additional Inputs: Emergency Input and Output Mute via terminal block Operating Voltage: 220 - 250 V AC, 50 Hz Power Consumption: 25 W Dimensions (W x H x D): 485 mm x 132 mm x 210 mm Weight: 4.4 kg What's in the Box LD Systems ZONE 624 Mixer Terminal Blocks Power Cord