Apollo Twin USB Interface for Windows Computers

Apollo Twin USB reinvents desktop recording by delivering legendary analogue studio sound, feel, and flow to music creators everywhere. This 2x6 USB 3 audio interface for Windows-based machines (Windows 7 and 8) combines the impeccable 24/192 kHz audio conversion of Universal Audio's acclaimed Apollo series with onboard Realtime UAD Processing and Unison™ technology — a breakthrough in classic mic preamp emulation.

With its onboard UAD-2 DUO Core processing, Apollo Twin USB lets you record your music in real time (at near-zero latency) through the full range of UAD plug-ins — from Neve, Studer, Manley, Marshall, Lexicon, API, and more* — putting racks of vintage EQs, compressors, mic preamps, tape machines, reverbs, and guitar amps at your fingertips.

A Universal Audio breakthrough, Apollo Twin USB's Unison technology gives you the tone of the world's most sought-after mic preamps — including their impedance, gain stage “sweet spots,” and component-level circuit behaviors. Based on unprecedented hardware-software integration between Apollo’s mic preamps and its onboard UAD plug-in processing, Unison lets you record through stunning emulations like the bundled UA 610-B Tube Preamp & EQ plug-in, with more emulations available at the UA Online Store.

Apollo Twin USB’s smart feature set includes two class-leading mic/line preamps, two analog line outputs, two digitally-controlled analog monitor outputs for full resolution at

all listening levels, and up to eight additional channels of digital input via Optical connection. Its onboard UAD-2 DUO Core processing lets you use UAD plug-ins both during realtime tracking and for mixing within Pro Tools, Cubase, Live, and more.

With its ergonomic desktop design, rugged aluminum construction, and front panel headphone and instrument connections, Apollo Twin USB has all the right tools, all in the right place. 

• I/O Complement
  • Microphone Inputs Two
  • Analog Line Inputs Two
  • Hi-Z Instrument Inputs One
  • Analog Line Outputs Two (independent mix buses)
  • Analog Monitor Outputs Two (one stereo pair, independent L/R mix buses)
  • Headphone Outputs One stereo pair (independent L/R mix buses)
  • Digital Input Port (TOSLINK optical) One (ADAT or S/PDIF, selectable)
  • USB 3 Port One
• A/D – D/A Conversion
  • Supported Sample Rates (kHz) 44.1, 48, 88.2, 96, 176.4, 192
  • Bit Depth Per Sample 24
  • Simultaneous A/D conversion Two channels
  • Simultaneous D/A conversion Six channels
  • Analog Round-Trip Latency 1.1 milliseconds @ 96 kHz sample rate
  • Analog Round-Trip Latency with up to four serial UAD Powered Plug-Ins via Console application 1.1 milliseconds @ 96 kHz sample rate

• Line Inputs 1 & 2
  • Jack Type (combo mic/line balanced inputs) Female ¼” TRS Balanced
  • Dynamic Range (A–weighting) 117.5 dB
  • Signal-to-Noise Ratio (A–weighting) 117.5 dB
  • Total Harmonic Distortion + Noise –108 dBFS
  • Common-Mode Rejection Ratio (CMRR) Greater than 60 dB (10’ cable)
  • Frequency Response 20 Hz – 20 kHz, ±0.1 dB
  • Input Impedance 10K Ohms
  • Gain Range +10 dB to +65 dB
  • Maximum Input Level (@ Minimum Gain)18 dBV
  • Maximum Input Level (@ Maximum Gain) –37 dBV
  • Stereo Level Balance ±0.05 dB
• Microphone Inputs 1 & 2
  • Jack Type (combo mic/line balanced inputs) Female XLR Balanced (pin 2 positive)
  • Phantom Power (switchable per input) +48V
  • Dynamic Range (A–weighting) 118 dB
  • Signal-to-Noise Ratio (A–weighting) 118 dB
  • Total Harmonic Distortion + Noise –110 dBFS
  • Equivalent Input Noise –127 dB
  • Frequency Response 20 Hz – 20 kHz, ±0.1 dB
  • Common-Mode Rejection Ratio (CMRR) Greater than 70 dB (10’ cable)
  • Default Input Impedance 5.4K Ohms (variable via Unison preamp model)
  • Gain Range +10 dB to +65 dB
  • Pad Attenuation (switchable per input) 20 dB (variable via Unison preamp model)
  • Maximum Input Level (@ Minimum Gain, with Pad) 23.8 dBV
  • Maximum Input Level (@ Maximum Gain, with Pad) –31.2 dBV
• Hi-Z Input
  • Jack Type Female ¼” TS Unbalanced
  • Dynamic Range (A–weighting) 117 dB
  • Signal-to-Noise Ratio (A–weighting) 117 dB
  • Total Harmonic Distortion + Noise –101 dBFS
  • Frequency Response 20 Hz – 20 kHz, ±0.1 dB
  • Input Impedance 1M Ohms
  • Maximum Input Level (@ Minimum Gain) 10 dBV
  • Maximum Input Level (@ Maximum Gain) –45 dBV
• Line Outputs 3 & 4
  • Jack Type ¼” Female TRS Balanced
  • Dynamic Range (A–weighting) 118 dB
  • Signal-to-Noise Ratio (A–weighting) 118 dB
  • Total Harmonic Distortion + Noise –107 dBFS
  • Frequency Response 20 Hz – 20 kHz, ±0.1 dB
  • Stereo Level Balance ±0.05 dB
  • Channel Separation Greater than 120 dB
  • Output Impedance 600 Ohms
  • Maximum Output Level 18 dBV
• Monitor Outputs 1 & 2
  • Jack Type ¼” Female TRS Balanced
  • Frequency Response 20 Hz – 20 kHz, ±0.1 dB
  • Dynamic Range (A–weighting) 115 dB
  • Signal-to-Noise Ratio (A–weighting) 115 dB
  • Total Harmonic Distortion + Noise –105 dBFS
  • Channel Separation Greater than 118 dB
  • Stereo Level Balance ±0.05 dB
  • Output Impedance 600 Ohms
  • Output Gain Range –96 dB to 0 dB
  • Maximum Output Level 18 dBV
  • Operating Reference Level +14 dBu, +20 dBu (selectable)
• Stereo Headphones Output
  • Jack Type ¼” Female TRS Stereo (unbalanced)
  • Frequency Response 20 Hz – 20 kHz, ±0.1 dB
  • Dynamic Range (A–weighting) 113 dB
  • Signal-to-Noise Ratio (A–weighting) 113 dB
  • Channel Separation Greater than 110 dB
  • Total Harmonic Distortion + Noise –101 dBFS
  • Stereo Level Balance ±0.11 dB
  • Output Impedance 10 Ohms
  • Output Gain Range –INF to 0 dB
  • Maximum Output Power 80 milliwatts into 600 Ohms

• S/PDIF
  • Connector Type Optical TOSLINK JIS F05 (shared with ADAT)
  • Format IEC958
  • Supported Sample Rates (kHz) 44.1, 48, 88.2, 96
  • S/PDIF Input Channels Two (Stereo L/R)
• ADAT
  • Connector Type Optical TOSLINK JIS F05 (shared with S/PDIF)
  • Format ADAT Digital Lightpipe with S/MUX
  • Supported Sample Rates (kHz) 44.1, 48, 88.2, 96, 172.4, 192
  • ADAT Input Channels @ 44.1 kHz, 48 kHz 1 – 8
  • ADAT Input Channels @ 88.2 kHz, 96 kHz 1 – 4 (S/MUX)
  • ADAT Input Channels @ 176.4 kHz, 192 kHz 1 – 2 (S/MUX)
• Clock Synchronization Sources
  • Internal, S/PDIF, ADAT (digital clock sync source conditional per selected digital input type)

• Power Supply External AC to DC
• AC Connector Type Changeable blades (UL, VDE, UK, SSA, CCC)
• AC Requirements 100V – 240V AC, 50 – 60 Hz
• DC Connector Type Male plug, 2.1 mm x 5.5 mm, center positive
• DC Requirements 12 VDC, ±5%
• Maximum Power Consumption 12 Watts

• Operating Temperature Range 32º to 95º Fahrenheit (0º to 35º Celsius)
• Storage Temperature Range –40º to 176º Fahrenheit (–40 to 80º Celsius)
• Operating Humidity Range 20% to 80%

• Dimensions
  • Width 6.31”
  • Height 2.60”
  • Depth, Chassis Only 5.86”
  • Depth, Including Knob & Jack Protrusions 6.20”
  • Shipping Box (Length x Width x Height) 8” x 8” x 5.5” (20.32cm x 20.32cm x 13.97cm)
• Weight
  • Shipping Weight (with box & accessories) 3.85 pounds
  • Weight (bare unit) 2.35 pounds
• Package Contents
  • Apollo Twin USB DUO Unit
  • External Power Supply with (4) changeable AC connectors supporting USA, Europe, UK, Australia, China
  • URL Card
  • SuperSpeed USB 3.0 cable

Digital Downloads (buying software)

All software marked as "serial download" or "digital download" will be delivered via email within normal office hours.

Simply add the software to the basket and at the delivery stage in the checkout please select "Digital Download - Software by email" as your delivery method

Delivery Charges (Main Products)

The cutoff for same-day dispatch is 3:30pm but can vary at busier times such as Christmas.

All orders over £99.00 will be delivered free via our standard delivery 2-3 days (UK Mainland)

If you need your item faster we also offer a Priority Tracked service at £3.99 (1-2 days) or Next Day Tracked £6.99

(please ensure you add a mobile number to your order for tracking)

Saturday delivery is available when ordered before 2pm (Mon-Fri)

All orders below £99.00 will start as low as £2.99 depending upon weight and qty(s) (UK Mainland) 

All Delivery options will be available at the delivery stage in the checkout

EU Delivery Times

Non UK Mainland Addresses please allow 1-3 Days
Delivery To Belgium / France / Germany please allow 3-4 Days
Music PC Systems - Please allow 5-7 Working Days build time (UK) 7-14 (Rest of the World)

French - Pour la Livraison s'il vous plaît permet en France 2-4 Jours
German - Für Lieferung Nach Deutschland erlaubt bitte 2-4 Tage

Delivery Notes
On delivery, you must inspect the goods carefully for damage as Inta Audio is unable to accept responsibility for damage in transit, shortage of delivery or loss of products unless the customer advises Inta Audio of such within three working days from the date of delivery.

Returns Policy

We ask that you follow these guidelines to help us process your return as quickly and efficiently as possible:

1. Please keep your order reference to hand. This confirms your original order and gives us the necessary details to authorise the product’s return.

2. Contact our Customer Services Team on 02476 369898 (or e-mail cs@inta-audio.com). We will then send you an RMA number and returns form which needs to be completed and sent back with the returned item(s).

3. (If the order has been unpacked) re-package it to ensure that it is being returned in its original condition. Please make sure all items relating to the product are returned, including manuals and cables.

4. When returning an item please obtain a ‘proof of postage’ receipt from the Courier.


Returned items must be mailed within 10 days of when the RMA Number has been issued. Items received with a post date 30 days after your requested return will NOT be eligible for refund.

Please note: Our returns policy is quite straightforward but there are a number of conditions that we ask our customers to comply with before applying:

1. It is your responsibility to request a return. If you don’t tell us you want to make a return, we don’t know. Once you do tell us, we will do everything we can to action it.

2. If you have not requested a return within 28 days of receiving an order, we will have assumed that you are intending to keep it and we will not authorise a return.

3. We always refund the payment according to how the original purchase was made and aim to do so within 72hrs of the return being received by us.

4. Returned goods are liable for a restocking fee of 15% towards handling and repackaging if the order is not returned in its original, unopened packaging. This charge will be subject to our inspection of the returned goods.

5. Delivery charges will not be refunded unless the delivered goods are faulty.

6. Replacement products are dispatched immediately after the returned goods have been received and accepted by Inta Audio.

7. Items that develop a fault within 30 days of delivery are eligible for a replacement or a refund. Delivery costs are also reimbursed for faulty items. Please contact our Customer Services Team on 02476 369898 if you believe your item has developed a fault.

Finally, please remember that notifying us of your intention to apply for a return, saving the delivery paperwork and keeping the order in its original packaging will help both you and Inta Audio to process the return quickly.

If you have any questions about our Returns policy please telephone us on 02476 369898 or email us at cs@inta-audio.com.