OVERVIEW

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 UA’s 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.

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.

KEY HIGHLIGHTS

Boutique Four-Channel Tone Machine:

The 4-710d gives you four Twin-Finity mic/line preamps, letting you blend between 100% tube and 100% solid-state tones with seamless phase alignment for unmatched flexibility.

Classic 1176-Style Compression on Every Channel:

Each channel features a specially designed 1176-style compression circuit with selectable fast or slow attack settings, offering legendary dynamic control at your fingertips.

Built-In 8-Channel A/D Conversion:

With 8 channels of pristine 24-bit digital conversion at sample rates up to 192 kHz, the 4-710d easily integrates into any modern studio setup via ADAT or AES/EBU outputs.

Ideal for Recording and External Processing:

Balanced send/return jacks allow easy external effects processing, while Hi-Z direct inputs with 2.2MΩ ultra impedance make the 4-710d perfect for capturing instruments directly.

Built Tough for the Studio and Stage:

Housed in a rugged two-rackspace metal chassis with a universal power supply, the 4-710d is designed for heavy professional use – from top-tier studios to live rigs.

FEATURES

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

TECHNICAL SPECS

Preamps: 4x 710 Twin-Finity™ mic/line preamps

Tone Path: Phase-aligned blend between tube and solid-state circuits

Compression: True-bypass 1176-style compression per channel (fast/slow settings)

Inputs: 4 mic/line inputs + 4 additional line inputs

Direct Input: JFET DI with 2.2MΩ ultra Hi-Z impedance

A/D Conversion: 8 channels at 24-bit, up to 192 kHz

Digital Outputs: Dual ADAT optical and AES/EBU DB-25

Metering: VU meters for input drive, gain level, and gain reduction + LED clip indicators

Additional Features: 48V phantom power, 75 Hz low cut filter, polarity switch

Clock I/O: 75Ω BNC word clock I/O

Power Supply: Universal voltage internal power supply

Construction: Heavy-duty metal two-space rack unit