Universal Audio 4-710D

4-channel Tube/FET Preamp and DI with Tone Blending Knob, and 8-channel 24-bit/192kHz A/D Conversion
Universal Audio 4-710D image 1
Universal Audio 4-710D image 1
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Universal Audio 4-710D
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The Centerpiece of Your Studio!

The Universal Audio 4-710d combines four 710 Twin-Finity mic pres into a single unit with A/D conversion and costs less than three original 710s combined! But that's not all. The preamps take a Class A FET preamp circuit and a completely separate Class A triode tube preamp and give you the ability to blend the two signals together to taste. While they were at it, Universal Audio also added a simple 1176-based compression section to each channel. Now it's even easier and more cost effective than ever to add a set of these fantastic hybrid preamps to your studio.

Four 710 Twin-Finity mic preamps with compression

Most sound engineers know about the Universal Audio 710 Twin-Finity mic preamp — an award-winning design that's standard equipment in top studios and live rigs worldwide. The UA 4-710d features four of these bad boys and comes in well under the price of four separate 710 units. Each channel also offers UA's newly designed 1176-style compression circuit. Not only do you get top-notch-sounding preamps, but you can dial in the exact amount of compression you need to make your sound source punch through the mix.

Phase-aligned "tone blending" of tube and solid-state

Each of the four mic preamp channels on the 4-710d allows for choosing between a 100% solid-state and 100% tube signal path, or any mix of the two that you desire, using a continuously variable control. Don't get stuck having to switch preamps every time you want a different sound, or worse yet, get stuck with only one sound to work with. Go from pristine to euphonic with Universal Audio's 4-710d blendable solid-state and tube signal paths.

Onboard A/D conversion with digital outputs

As if the Universal Audio 4-710d doesn't do enough for your studio, the eight analog inputs are also digitized via 24-bit A/D converters up to 192kHz. Digital output is available via dual ADAT "lightpipe" or AES/EBU DB-25 connectors, giving you effortless compatibility with most popular audio interfaces. What's more, you can even input up to four other analog mic preamps through the 4-710d to access its superior A/D conversion.

Universal Audio 4-710d 4-channel Microphone Preamplifier Features:

  • Phase-aligned "tone blending" of tube and solid-state
  • Newly designed 1176-style compression/soft-limiting circuit on each mic channel
  • Monolithic balanced output stage
  • Dual gain stages
  • Balanced send/return inserts
  • Discrete JFET DI with 2.2M ohm ultra-hi-Z impedance
  • 70dB+ of gain, +48-volt phantom power, pad (15dB), phase invert, and low-cut filter (75Hz)
  • Front-panel hi-Z input (switched from mic/line)
  • Rear-panel XLR mic input, XLR line input, and XLR line output
  • Digital output via dual ADAT optical or AES/EBU (DB-25)
  • 8 channels of high-quality 24-bit/192kHz A/D conversion

Additional Media

Studio Preamp Buying Guide
Sneak Peek!

Tech Specs

Preamp Type Hybrid
Number of Channels 4
Frequency Response 20Hz-20kHz
Phantom Power Yes
Compressor Yes
Analog Inputs 4 x XLR (Mic), 4 x 1/4" (Line), 4 x 1/4" (Hi-Z), 4 x 1/4" (Line - CH 5-8)
Analog Outputs 4 x XLR
Digital Outputs 1 x DB-25 (AES/EBU), 2 x Optical (ADAT)
Clock I/O 2 x Word Clock
Rack Spaces 2U
Height 3.5"
Depth 12"
Width 19"
Weight 11.5 lbs.
Manufacturer Part Number 4710DD

Customer Reviews

Based on 47 reviews
Write your review

Great value mic pre

This unit is a great addition to my daw. I'm currently using this in conjunction with a digi 002 and this blows away the stock mic pres. It's ability to switch from tube to transistor helps me warm up my condenser and dynamic mics as well as providing a tight clean path for my tube mics. The 76 style compression is great for soft reduction on the way in but it won't work for every source. The one weakness I have noticed is the limiter for the digital outs, it seemed to act more like a pad (lowering the entire signal) rather than a limiter but it can be turned off so I still give this unit 5stars. The factor that finally sold me on this was that it has so many output options. I am planning on upgrading my PT rig in the next year and I wanted to be sure that the mic pre I chose wouldn't limit my choices for a new interface. This thing fit the bill and then some! I've been so impressed that I might just have to grab another one when I get the new interface.
Music background: Writer/Engineer/producer

Money Well Spent

Very clean and versatile. A/B'd against some lower priced - but very functional mic preamps, and there was a noticeable difference in tone. On board converters with the ability to plug in four additional preamps of your choice to send via light pipe to your interface is also very attractive. The compressors are program dependent and work well with minimal tweaking. It's a very smart box. Exceptionally well thought out. I'll buy another one for certain.
Music background: recording enthusiast



Great piece of gear

Four great preamps with built in compression that help me expand my apollo interface. I plan on using the line inputs for external preamps when i finish up my 500 series rack. I use the built in conversion, and i can't tell the difference between the 4710D and my gen2 Apollo 8 (they both sound great). My one complaint is the vu meter on channel two sticks sometimes just a hair above (barely noticeable unless you were looking for it) 0 when I switch to watch compression. I have heard of some people having issues with these, but i'd rather take the risk and have analog meters then LED any day. The reason for me getting one was previous use in other studios that record professionally, and mentors have told me it's worth getting. Some people say they can't hear the difference between tube and trans, but there is definitely a difference, just very subtle. You can hear it well with Bass DI, male vocals, and overheads for sure.
Music background: Recording Engineer, Musician

Wish I had more of these.

After reading and reading I bought this amp for my studio. Yea, the tubes can overdrive easily but if you pull back and let the tubes warm, man oh man, this preamp will give you that warm, silky sound you're looking for. I use this on everything. I love the solid state/tube options. Have solid state, or have 100% tube. Or somewhere in between, it's up to you. This item will make any mic sound good. However, you will notice that your cheap mic's may sound better, but still cheap. A better quality mic will definitely shine with this preamp.
Music background: Musician, Recording Engineer.

Sweetwater Advice

Ken Davis

The Universal Audio 4-710d is a preamp that has given me maximum versatility for the money! From vocal tracks to drum overheads, fattening up virtual instruments or real ones, the 4-710d solidifies everything I've tried it on. Its ADAT lightpipe outputs extend the input count of my Liquid Saffire 56 recording interface, and the four additional Line In inputs let me finally connect some of my analog gear to boot! It also works great as a master clock device, so it now acts as the literal heartbeat of my studio!
See also: Universal Audio, Universal Audio Channel Strips, Universal Audio Preamps