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Universal Audio 4-710D Microphone Preamplifier
 
Universal Audio 4-710D Microphone Preamplifier
  • 4 Channel
  • Dual-Path
  • 1176-Style Compressor per Channel
  • Send/Return Inserts
  • Discrete JFET DI
  • 8-Channel 24-bit AD Conversion
  • Phantom Power
  • Low-Cut Filter, Pad and Phase Inverse
  • Internal Universal Power Supply

AED 8,395 (Including VAT) Price:
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The 4-710d from Universal Audio is a high-end, 4-channel microphone/line preamplifier with tube and solid-state tone blending capabilities. The dual signal path is perfect for a wide range of microphone and instrument sources, with each channel offering selectable 1176-style compression circuitry. Four additional line inputs feed 8-channels of pristine analog-to-digital conversion.

The 1176-style compression include specially tuned "fast" and "slow" settings, and can be completely switched out of the signal chain. Each of the microphone preamp channels allows for continuously variable phase-aligned tone, between a 100% tube and 100% solid-state signal path. Send and return jacks are available for external processing or signal access.

The 8 analog inputs are digitized via ultra high-quality 24-bit analog to digital converters at selectable sample rates up to 192kHz. Digital output is available via dual ADAT Lightpipe connectors (SMUX supported), or via a 25-pin D-sub connector for 8-channels of AES/EBU, allowing for easy integration with most popular audio interfaces.

Preamplifiers
  • Four TEC Award-winning 710 Twin-Finity microphone/line preamps
  • Dual-path 285-volt Class-A tube and transimpedance solid-state preamps
  • Phase-aligned tone-blending of tube and solid state circuits, creamy to crunchy
  • Newly designed 1176-style compression circuit per preamp channel
  • JFET Direct Input with 2.2MΩ ultra Hi-Z impedance with auto input override
  • Large backlit VU meters for flexible metering of input drive, gain level and gain reduction
  • Balanced send/return inserts (half-normalled)
  • 48V phantom power individually switchable
  • 75Hz low-cut filter
  • Polarity switch
  • Monolithic balanced output stage


Analog-to-Digital Conversion
  • Eight channels of high quality 24-bit analog to digital conversion
  • Selectable sample rates up to 192kHz
  • Digital output via dual ADAT optical and AES/EBU DB-25 connectors
  • 8-channel soft limiter (switchable for all channels)
  • Ultra-low jitter clock subsystem
  • LED metering array with clip/hold indicators
  • 75Ω BNC work clock I/O
  • Digital outputs anti-pop protection on power-up


Other
  • Universal voltage internal power supply
  • Heavy-duty metal construction, two-space rack unit

Number of Channels 4 microphone inputs
8 inputs for AD conversion
Inputs 4 x XLR Microphone
4 x XLR Line
4 x 1/4" TRS phone (ch 5-8)
4 x 1/4" TRS phone Return
1 x 1/4" TS phone Instrument (front panel)
Output 4 x XLR
4 x 1/4" TRS phone Send
Other Connectors 1 x 25-pin D-sub AES/EBU output (8-channels)
2 x TOSLink ADAT optical output (SMUX supported)
2 x BNC Wordclock I/O
Phantom Power +48V switchable
Multi Function 8-channel analog to digital converter
Gain Range Gain Range for Unit: -Infinity to 70dBu
Mic Range Gain: 10 to 60dBu
Line Range Gain: -10 to 40dBu
Hi-Z Range Gain: -10 to 40dBu
Maximum Input Level Microphone, gain @ minimum solid state: +18dBu
Microphone, gain @ minimum tube 1% THD: -7dBu, +8dBu w/pad
Line, gain @ minimum solid state: +30dBu
Line, gain @ minimum tube 1% THD: +8dBu
Hi-Z, gain @ minimum solid state: +18dBu
Hi-Z, gain @ minimum tube 1% THD: +8dBu
Maximum Output Level +18dBu into 600Ω
+28dBu into 100kΩ
Frequency Response 20Hz to 100kHz, +/-0.2dBu
THD + N Tube: 0.1% @ +4dBU
Solid-State: 0.005% @ +4dBU
Power Requirements 100~240VAC, 2.5A, 50/60Hz
Dimensions (WxDxH) 2U 19" rack mount
Specialties -15dB pad
75Hz high-pass filter

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