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Universal Audio Apollo Twin DUO USB is a desktop USB audio interface for Windows with 2 Unison mic preamps, 24-bit and 192 kHz conversion and DUO Core DSP for Realtime UAD processing. It brings the Apollo Twin X front end to systems without a Thunderbolt port.
The original Apollo Twin front end, on USB.
Apollo is built around Unison, which is the part that separates it from a conventional interface. Unison gives the physical mic preamp bidirectional control, so a Neve, API, Manley or SSL emulation changes the impedance and gain staging of the analog front end rather than only processing the signal after conversion. The result behaves like the modeled preamp at the input, not like a plug-in placed after one.
Realtime UAD Processing is the second half. Onboard DSP runs UAD plug-ins at near-zero latency regardless of the DAW buffer size, so a vocalist monitors through an LA-2A and a Pultec while tracking, and the DSP load sits on the interface rather than the computer. The same plug-ins run in VST, Audio Units and AAX in any major DAW at mix time.
LUNA is included free. It is UA's own recording system, and it adds tape, console and summing emulations that run as extensions rather than as inserts, which is a different workflow from treating them as plug-ins on a channel.
At a Glance
| Type | Apollo audio interface |
| Unison preamps | 2 |
| DSP | DUO Core |
| Conversion | 24-bit, 192 kHz |
| Connection | USB, Windows |
| Form factor | Desktop |
| Digital | Optical input |
How Much I/O Does Apollo Twin DUO USB Have?
Two combination XLR and 1/4 in. mic/line inputs with Unison preamps, a front panel Hi-Z instrument input, a stereo monitor pair, a headphone output and an optical digital input. Conversion runs at 24-bit and 192 kHz.
Who Is This For?
Windows producers who want Unison preamps and Realtime UAD processing on a machine with no Thunderbolt port. The Apollo Twin X DUO USB is the newer generation if you are choosing between them.
What Is Unison and Why Does It Matter?
Unison gives the UAD plug-in bidirectional control over the physical mic preamp, so a Neve or API emulation changes the impedance and gain staging of the analog input stage itself rather than processing the signal after conversion.
What Does DUO Core DSP Mean?
Two SHARC processors on the interface running UAD plug-ins at near-zero latency. More cores allow more plug-in instances at once. The QUAD models carry four.
Connections
| Mic/line inputs | 2, combination XLR and 1/4 in., Unison |
| Instrument input | 1, front panel Hi-Z |
| Monitor outputs | 1 stereo pair |
| Headphones | 1 stereo output |
| Digital | Optical input |
| Computer | USB |
Why Universal Audio?
Universal Audio was founded in 1958 by M.T. "Bill" Putnam, the engineer who built the first recording console with integrated equalization and effects sends, and who designed the 1176 and the 610. The company was revived in 1999 by his sons and now does two things: it still hand-builds analog hardware in California, and it licenses and models the classics from Neve, API, Manley, SSL, Lexicon, Studer, Ampex and others rather than emulating them without authorization.
Frequently Asked Questions
Is this a genuine Universal Audio product?
Yes. Victory is a veteran owned dealer in Miami and units ship new in original packaging with full manufacturer support, including software registration rights.
Is this covered by warranty?
Yes. This unit carries the full Universal Audio manufacturer warranty, registered to you as the original purchaser. Call 844-687-4208 for the current term.
Does it work on a Mac?
Universal Audio positions the USB Apollo models for Windows. Check UA's current system requirements, and call 844-687-4208 if you want that confirmed.
How does it compare to the Apollo Twin X DUO USB?
The Twin X is the newer generation. Call 844-687-4208 and we will compare the two against what you plan to record before you order.
Can I track through UAD plug-ins with no latency?
Effectively yes. Realtime UAD Processing runs them on the interface's DSP at near-zero latency regardless of the DAW buffer size.
Why Buy From Victory Musical Instruments?
Victory Musical Instruments is a pro audio and musical instrument dealer in Miami, Florida. We support churches, schools, studios and working musicians across South Florida and ship nationwide. Every unit is new in the original factory packaging with full manufacturer support. Call 844-687-4208 to check lead time, request a quote, or arrange local pickup.