Universal Audio 4-710d Tone-Blending Mic Preamplifier

Sale price$ 1,999.00 Regular price$ 2,499.00
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SKU: 4-710d

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Universal Audio 4-710d Tone-Blending Mic Preamplifier


Universal Audio 4-710d Tone-Blending Mic Preamplifier

The Universal Audio 4-710d offers four channels of tone-blending “Twin-Finity” preamps, each with 1176-style compression and built-In A/D converters

The Universal Audio 4-710d is the Twin-Finity times four, which gives you four boutique-quality hybrid mic/line preamps that let you continuously blend between tube and solid state textures—perfect for a wide range of microphone and instrument sources. If that’s not enough, the 4-710d also gives you 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.

Universal Audio 4-710d Just the Facts:

  • Four TEC Award-winning 710 Twin-Finity microphone/line preamps, each featuring: dual-path 285-volt Class-A tube and trans-impedance 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
  • Blend tube and solid-state textures to suit any sound source
  • Add eight inputs to any Apollo interface via ADAT optical connection

Universal Audio 4-710d—Under the Hood

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.

What the pros are saying about the UA 4-710d

“ The 4-710d is a whole rack’s worth of gear on one small box. Four big-sounding mic-pres, four 1176s, eight channels of A/D conversion—but UA warm sound.” — Chris Dugan (Green Day, Iggy Pop, U2)

“The 4-710d is one of the smartest mic preamps around. It’s cleverly designed and fun to use. I love the drive it gives me on drums and guitars.” — Jacknife Lee (R.E.M., The Cars, Snow Patrol)

If having Twins isn’t enough for you, how about quadruplets? Order the Universal Audio 4-710d and have enough preamp power to close-mic the top of a fusion drum kit and tailor each channel to bring out the most of each tom and snare. Order yours today. For more information, call or chat online with your PAD Studio Consultant.



  • JFET Direct Input with 2.2M ohm 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
  • 75Hz 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
  • 75 ohm 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
  • One year warranty including parts and labor

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