By merging the best of UA’s classic analog design with smart modern features and workflow enhancements, the 4-710d is the most flexible microphone preamp in the UA lineup.
Featuring four high-end mic/line preamps with a unique tube/solid-state tone blending circuit, as well as classic 1176-style compression on each mic channel, the 4-710d also offers tons of digital I/O to expand your setup.
Preamplifiers
• Four TEC Award-winning 710 Twin-Finity™ microphone/line preamps, each featuring:
• 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 w/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
• 75 Hz low cut filter
• Polarity switch
• Monolithic balanced output stage
Analog-to-Digital Conversion
• Eight channels of high quality 24-bit A/D conversion:
• Selectable sample rates up to 192 kHz
• 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
• One year warranty including parts and labor
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UA 2-610 Dual Channel Tube Preamplifier 
