Four Channels of Tone-Blending Twin-Finity Preamps and 1176-Style Compression with Built-In A/D Converters

The Universal Audio 4-710d is a boutique quality, four-channel microphone/line preamplifier with unique tube and solid-state tone blending capabilities perfect for a wide range of microphone and instrument sources. This versatile multi-channel preamp offers selectable 1176-style compression circuitry on each channel, plus four additional line inputs feeding eight channels of pristine analog-to-digital conversion. Building upon UAs classic analog design approach, combined with smart modern features, the 4-710d is the most flexible preamp in the UA lineup.

At the core of the 4-710d are four channels of tone-blending Twin-Finity mic preamps with true-bypass 1176-style compression, including specially tuned "fast" and "slow" settings. Each of the four mic 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.

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

The eight analog inputs are digitized via ultra high-quality 24-bit A/D converters at selectable sample rates up to 192 kHz. Digital output is available via dual ADAT lightpipe or AES/EBU DB-25 connectors, facilitating integration with most popular audio interfaces.