Universal Audio SOLO/610

All-tube 1-channel Mic Preamp and DI Box
Universal Audio SOLO/610 image 1
Universal Audio SOLO/610 image 1
$999.00
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Universal Audio SOLO/610
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All-tube Preamp/DI with Classic UA Sound

The SOLO/610 mic preamp/DI box from Universal Audio brings the best of their preamp designs to a single-channel format. The SOLO series features the solid build and audiophile components that define UA quality. Its portable form factor is convenient for use in the studio and control room, onstage, and on your desktop. The all-tube SOLO/610 imparts its alluring, characteristic warmth to all your digital recordings. Vocals take on new life; direct bass sounds huge and round; drums sound fat and punchy. Take it from Sweetwater: if you want to make great-sounding music, you need the right front end: the Universal Audio SOLO/610.

Classic Putnam Sound in a portable package

The SOLO/610 delivers the classic Putnam 610 console sound in a single channel format with a rugged, highly versatile form factor, at a price every project studio can afford. Unlike stationary rack gear, the portable "go anywhere" design of the SOLO/610 makes it perfect for laying down great-sounding tracks at home, in the studio, and on the road. Functionally lean but sonically mean, the SOLO/610 was carefully created to maintain all of the character of its vintage predecessor and has the same solid build and audiophile components professionals expect from UA.

Vintage sound, modern flexibility

The SOLO/610 gives you extended-range, continuous Gain and Level controls for precise gain staging that yields a versatile sonic palette ranging from warm cleans to tasty vintage coloration. The SOLO/610 delivers all the essentials: a classic Putnam 610 console mic pre with switchable 48V phantom power, direct instrument input, highpass filter, polarity reverse, and flexible dual impedance selection for Mic and DI inputs. For maximum flexibility, the SOLO/610 also includes a convenient DI throughput plus a Ground Lift and a Line/Mic level output switch.

Universal Audio SOLO/610 Mic Preamp/DI Features:

  • Record through a legendary tube circuit
  • Classic Putnam 610 console mic preamplifier and DI with throughput
  • Add tube euphonics and girth to any mic or direct input
  • Gain, Level, and impedance selection for maximum tonal versatility
  • Portable design for studio, desktop or stage
  • Rugged steel chassis
  • Switchable Mic/Line level output
  • Legendary UA build quality and heritage
  • Handcrafted in UA's Scotts Valley, California labs

Additional Media

Studio Preamp Buying Guide
UA Rebates
Universal Audio Launches a Worldwide Promotion
Universal Audio SOLO/610 Review
The more you buy, the More You Save!
UA Summer Product Promotions
New In Stock At Sweetwater

Tech Specs

Preamp Type Tube
Number of Channels 1
Frequency Response 20Hz-20kHz
Phantom Power Yes
Analog Inputs 1 x XLR (Mic), 1 x 1/4" (Hi-Z)
Analog Outputs 1 x XLR, 1 x 1/4" (DI Thru)
Height 5"
Depth 14"
Width 5.75"
Weight 9 lbs.
Manufacturer Part Number S610D

Customer Reviews

5/5
Based on 30 reviews
Write your review
5/5

Inspiring!

Best thing that ever happened to my home studio. I use this as a DI to record synths and drum machines, and as a preamp for my microphones. My mixes have completely changed! Everything sounds crystal clear now and mixes easily. Want another one now to record stereo parts.
Music background: Pro musician
5/5

The Solo Competition

This piece of gear has done nothing but exceed my expectations in the vocal booth as a mic pre and giving me and my clients a huge warm silky vintage tube character only UA could truly offer. A definite must for bass/GTRs and vocals. of course using it with high quality gear will only enhance the mic pre capabilities and sonic achievement for your sound. An amazing piece of art work.
Music background: Recording Engineer, Live Sound Engineer, Pro Musician
5/5

solo 610 is awesome bang for the buck

I recently purchased a Neumann M147 used, wasn't liking the sound. I wanted more of a vintage rock sound ala KISS vocals. Saw the Solo 610 and thought it was a good price for a class A tube pre amp. Well, Now I love my set up. Neumann sounds like it should more like A U47. A classic warm rock vocal. Sits nice in the mix now too. Very pleased.
Music background: recording hobbyist
5/5

Warm, fat, clean, THE PERFECT TUBE SOUND!!!!!!

I was a digital music producer searching for something to warm my mixes and U87 up, and the solo 610 did just that, on vocals its a hit, and i was even more blown away by what it did to my motif, I heard the violins, and bass guitar like I never have before, its truly amazing and definately opens up many options that i never had before, If you like that warm round tuby sound add this to your studio, r and b producers i think would particularly love this pre.
Music background: Recording Engineer, Mixing Engineer, Producer, Artist
5/5

Should be called a So-AWESOME 610

I love all-things-tube, and this preamp is no exception. I've used it to track vocals and electric guitars with various microphones (SM57, TLM 103, Blue Baby Bottle, Studio Projects C1) in Pro Tools LE and HD environments. I've also used the DI for bass guitar... the resulting tone for all of the above applications has been incredible tone, period. Setting the gain low, and the level high, the amp is nice and clean, but full. With the gain up and level down, fat, warm, rich, full, round, etc. GREAT for all things rock. The impedance selector is a nice touch, and the phantom power is handy, of course. This preamp has become one of my favorite pieces in the studio. It's lunch box-portability is also a major plus, in that I can take it from studio to studio, and always get my tone, no matter what instrument I'm recording. I'll be sure to get another in the near future for use as a stereo pair. Bottom line... Great tone. Versatile. Portable. I love it. ROCK!!!!
Music background: Pro Musician, Engineer

Sweetwater Advice

Paul Allen

I've owned a SOLO/610 for years now and there's nothing else at this price point that offers the amount of vintage sound and detail that the 610 pre does. I use it first as my go-to tube pre on vocals, however many people (myself included) also use the DI for bass, keyboards, and guitar. I've even used the 610 as a DI live several times because nothing else seemed to get me the warm sound I wanted for bass.

Mitch Gallagher

Universal Audio's involvement in the professional audio business goes back a long way - the original company's products date back to Bill Putnam Sr.'s groundbreaking designs back in the 1950s. Now Universal Audio has added two new preamps to its line-up: The Solo/110 and Solo/610. The two Solos are nearly identical externally; but inside they're very different animals. The tube-based Solo/610 is based on the historic original 610 console Putnam built, which was used by artists ranging from Sinatra to Van Halen. The solid-state Solo/110 is a discrete Class A preamp based on Universal Audio's high-end Precision 8110 and 4110 models. Both models are housed in the same rugged steel "desktop"-style enclosure, which has a convenient handle on top and an angled front panel that makes seeing settings easy. This form factor makes it easy to grab a Solo and place it in the studio near a microphone, to take it on location, or to position it near your computer, recorder, or mixer. You can rackmount up to three units side-by-side using an optional rackmount shelf. Aside from the fact that the two units have different circuits inside, each has its own types of switches and knobs - the 610 goes for big "vintage"-style knobs and toggle switches, the 110 has lighted pushbutton switches and streamlined "modern" knobs. Both preamps have a DI input (with a DI thru connection for routing the signal to a guitar or bass amp), high and low input impedance settings, switchable phantom power, a low-cut filter, and a phase (polarity) switch on their front panels. Knobs are provided for controlling input gain and output level; a tri-color LED shows signal present, near clipping, and clipping. Around back, each has a power switch and IEC power cable connection, an XLR mic input, and an XLR output with switchable mic/line level setting and ground lift switch. You might think that "straight-ahead" preamps like the Solo series have just one sound. But in fact, these are quite versatile units. First up, you can alter the tone of the preamps by changing the input impedance. Beyond this, you can dial in the tone to taste using the gain structure of the preamp. By running the input gain control lower and the output level higher, you get a clean, transparent tone. Turn up the input gain and turn the output down, and you get a fatter, more harmonically rich tone. It works sort of like a guitar amp - turn the preamp up for more drive, and use the output control to set the final volume. Although they're operationally identical, naturally there are tonal differences between the 610 and 110. The 110 tends toward a clear, pristine, sound, without a lot of coloration - perfect for when you want to capture a natural, realistic sound. I found that it compared favorably to some of the high-end "straight-wire" preamps in my studio. As you turn up the gain, the 610 has all the tube "girth" and punch that you'd expect from a vintage design - we're talking fat, with a smooth top end. It's great for rounding out and warming up a signal. Whether you're looking for a pure, clean sound or a vintage tube-ified tone, the Solo/110 and Solo/610 deliver. They're compact, convenient, and decidedly affordable. In fact, you'll want both; I found the two units were perfectly complementary to one another. Where one wasn't right for a signal, the other stepped right in and sounded great. Both are clean, quiet, rugged, and easy to use. Universal Audio has a pair of winners on their hands with the new Solo preamps!
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See also: Universal Audio, Universal Audio Preamps