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SYSTEM
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I/O Complement
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Microphone Inputs
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Four
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High Impedance (Hi-Z) Instrument Inputs
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Two
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Analog Line Inputs
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Eight
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Analog Line Outputs (DC coupled)
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Eight (ten including Monitor outputs)
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Analog Monitor Outputs (DC coupled)
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Two (one stereo pair)
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Headphone Outputs
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Two stereo
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ADAT
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Up to eight channels via dual I/O ports with S/MUX
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S/PDIF
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One stereo input, one stereo output
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Thunderbolt 3 Ports
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Two
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Word Clock
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One input, one output
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A/D – D/A Conversion
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Simultaneous A/D conversion
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Eight channels
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Simultaneous D/A conversion
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14 channels
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Supported Sample Rates (kHz)
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44.1, 48, 88.2, 96, 176.4, 192
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Bit Depth Per Sample
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24
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Analog Round-Trip Latency
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1.1 milliseconds @ 96 kHz sample rate
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Analog Round-Trip Latency through four UAD legacy plug-ins (included) via Console software
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1.1 milliseconds @ 96 kHz sample rate (no additional latency via Realtime UAD Processing)
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ANALOG I/O
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Microphone Inputs 1 – 4
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Frequency Response
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20 Hz – 20 kHz, ±0.05 dB
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Dynamic Range
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122 dB (A–weighted)
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Total Harmonic Distortion + Noise Ratio (1 kHz @ 4.9 dBu)
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-114 dB (0.00020%)
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Maximum Input Level (PAD on)
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26 dBu
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Default Input Impedance
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5.4K Ohms (variable via Unison plug-ins)
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Gain Range
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+10 dB to +65 dB
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Pad Attenuation (switchable per input)
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20 dB (variable via Unison plug-ins)
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Phantom Power
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+48V (switchable per mic input)
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Connector Type
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XLR Female, pin 2 positive
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Hi-Z Inputs 1 – 2
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Frequency Response
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20 Hz – 20 kHz, ±0.04 dB
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Dynamic Range
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121 dB (A–weighted)
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Total Harmonic Distortion + Noise Ratio (1 kHz @ 11.2 dBu)
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-111 dB (0.00028%)
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Maximum Input Level
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12.4 dBu
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Default Input Impedance
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1M Ohms (variable via Unison plug-ins)
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Gain Range
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+10 dB to +65 dB
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Connector Type
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¼” Female TS Unbalanced
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Line Inputs 1 – 8
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Frequency Response
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20 Hz – 20 kHz, ±0.05 dB
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Dynamic Range
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123 dB (A–weighted)
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Total Harmonic Distortion + Noise Ratio (1 kHz @ 23 dBu)
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-113 dB (0.00022%)
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Maximum Input Level
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24 dBu
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Input Impedance
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10k Ohms
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Gain Range
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+10 dB to +65 dB
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Connector Type
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¼” Female TRS Balanced
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Line Outputs 1 – 8
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Frequency Response
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20 Hz – 20 kHz, ±0.07 dB
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Dynamic Range
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127 dB (A–weighted)
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Total Harmonic Distortion + Noise Ratio (1 kHz @ -1 dBFS)
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-119 dB (0.00011%)
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Maximum Output Level
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24 dBu
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Output Impedance
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100 Ohms
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Connector Type
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¼” Female TRS Balanced
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Monitor Outputs 1 – 2
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Frequency Response
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20 Hz – 20 kHz, ±0.06 dB
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Dynamic Range
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129 dB (A–weighted)
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Total Harmonic Distortion + Noise Ratio (1 kHz @ -1 dBFS)
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-118 dB (0.00012%)
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Maximum Output Level
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24 dBu
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Output Impedance
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100 Ohms
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Connector Type
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¼” Female TRS Balanced
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Stereo Headphone Outputs 1 – 2
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Frequency Response
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20 Hz – 20 kHz, ±0.05 dB
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Dynamic Range
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125 dB (A–weighted)
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Total Harmonic Distortion + Noise Ratio (1 kHz @ -1 dBFS)
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-102 dB (0.00080%)
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Maximum Output Power (into 300 ohm load)
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150 mW RMS
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Connector Type
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¼” Female TRS Stereo
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DIGITAL I/O
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S/PDIF
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Connector Type
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Female Phono (RCA)
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Format
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IEC 958
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Supported Sample Rates (kHz)
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44.1, 48, 88.2, 96, 176.4, 192
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ADAT
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Connector Type
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Optical TOSLINK JIS F05
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Format
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ADAT Digital Lightpipe with S/MUX
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Supported Sample Rates (kHz)
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44.1, 48, 88.2, 96, 176.4, 192
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Channel Assignments @ 44.1 kHz, 48 kHz
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Port 1 = Channels 1 – 8, Port 2 = 1 – 8 (mirrored)
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Channel Assignments @ 88.2 kHz, 96 kHz
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Port 1 = Channels 1 – 4, Port 2 = Channels 5 – 8
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Channel Assignments @ 176.4 kHz, 192 kHz
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Port 1 = Channels 1 – 2, Port 2 = Channels 3 – 4
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Word Clock
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Connector Type
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BNC
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Lock Range
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±4% of any supported sample rate
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Word Clock Input Termination
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75 Ohms, switchable
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ELECTRICAL
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Power Supply
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External AC-to-DC Power Supply, Level VI compliant
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AC Input Connector Type
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IEC Male
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AC Requirements
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100V – 240V AC, 50 – 60 Hz
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DC Connector Type
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XLR 4-Pin Locking Male (Neutrik P/N NC4MDM3-H)
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DC Requirements
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12 VDC, 6A
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Maximum Power Consumption
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72W (30W typical)
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ENVIRONMENTAL
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Ambient Temperature Range
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32º to 104º F (0º to 40º C)
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MECHANICAL
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Dimensions
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Width
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19 in (48,26 cm)
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Height (1U rack space)
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1.75 in (4,45 cm)
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Depth, Chassis Only
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12.125 in (30,80 cm)
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Depth, Including Knob & Jack Protrusions
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13.5 in (34,29 cm)
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Shipping Box (Width x Depth x Height)
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23.5 in x 17 in x 7.5 in (59,69 cm x 43,18 cm x 19,05 cm)
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Weight
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Shipping Weight (with box & accessories)
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USA: 16.6 lbs (7.52 kg) EU & UK: 16.9 lbs (7.64 kg)
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Weight (bare unit)
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9 lbs (4.08 kg)
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Package Contents
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Apollo x8 Audio Interface Unit
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External Power Supply
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AC Power Cable (IEC), Region Specific
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Set of (4) Rack-Mount Screws
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