Universal Audio Apollo x6


Apollo x6 allows music producers and post-production studios to track, overdub, and mix with new world-beating A/D and D/A conversion, HEXA Core UAD plug-in processing, and 5.1 surround sound monitoring — all in a sleek rackmount Thunderbolt 3 audio interface for Mac or PC.


Key Features
  • Bands, Producers & Studio/Film Engineers
  • 2 High-Speed Thunderbolt 3 Ports
  • 2 Unison Mic Pres, 2 Hi-Z In, 6 Line In
  • 2 Headphone Outs, 8 Line/Monitor Outs
  • Elite-Class 24-Bit / 192 kHz AD/DA
  • External Power Supply / Mac & Windows
  • Monitoring & Talkback Control, ADAT I/O
  • HEXA Core Processing with 6 DSP Chips
  • Wordclock I/O, Expandable DSP and I/O
  • 34 UAD Plug-Ins & Mac Recording Software

Born from the ever-popular Apollo line of interfaces used on loads of Grammy-winning albums and chart-topping songs, the Universal Audio Apollo x6 Heritage Edition rackmount 16×22 Thunderbolt 3 audio interface combines the sound, feel, and flow of analog studio recording with upgraded clocking, surround monitoring, a robust bundle of 34 stellar UAD plug-ins, and 50% more DSP than earlier Apollos, thanks to its supercharged HEXA Core real-time UAD processing.

Furnished with elite-class 24-bit / 192 kHz conversion, rivaling dedicated high-end converters, the Apollo x6 gives music creators, record producers, and postproduction engineers the appreciable value of crystal-clear high-resolution recording and mixing with ultralow distortion (-119 dB) and immense dynamic range (129 dB). Additionally, its switchable headroom setting facilitates proper level-matching with a variety of audio equipment.

The interface features two XLR mic inputs and two 1/4″ Hi-Z inputs, all with Unison integration for precise UAD emulations of classic analog preamps—impart vintage character of your choosing on microphone and instrument recordings while bypassing the unpredictable nature of old equipment. Plus, the six 1/4″ line-level inputs on the rear panel can be used to patch in virtually any outboard mic preamps or direct outputs from a console.

Thanks to the switchable low-cut filter, pad, polarity inversion, 48V phantom power, and stereo linking on each preamp, you can efficiently optimize your incoming signals with straightforward buttons on the Apollo x6’s face. In addition to the six primary analog inputs, you can record up to 10 more channels by connecting ADAT- and S/PDIF-equipped external preamps to the TOSLINK optical and S/PDIF coaxial input ports on the Apollo x6.

ADAT optical and S/PDIF coaxial outputs are also featured on the Apollo x6, allowing it to route up to 10 channels from your DAW to a digital mixer, headphone distribution system, or external D/A converter. Utilize the BNC wordclock input and output jacks to accurately clock sync to house or lock other digital equipment to the Apollo.

The built-in HEXA Core processing utilizes six DSP chips, granting 50% more DSP than earlier Apollos and the ability to monitor and record audio using classic analog emulations with near-zero latency and no burden on your computer’s CPU. The plug-in bundle included with the Heritage Edition empowers you with 34 top-notch plug-ins ranging from vintage compressor and EQ collections to virtual guitar/bass amps, time-based processors, and tape emulation. The included Console application provides control and recall of all interface and UAD plug-in settings including channel-strip presets, drag-and-drop functionality, and dynamically resizable windows.

Mac and Windows drivers ensure compatibility with all major DAWs including Pro Tools, Logic Pro, Cubase, Ableton Live, and more. The interface also integrates seamlessly with LUNA, Universal Audio’s free Mac-based, single-window recording system with unlimited track counts and full Audio Units support.

The Apollo x6 offers a comprehensive monitor section with talkback functionality and dedicated front-panel controls for Alt Speakers, Dim, and Mono functions, as well as input and output metering capabilities. In addition to the dedicated stereo monitor feed and two front-panel headphone outputs (great for handling multiple cue mixes), six 1/4″ line outputs are available for connection to a second set of monitors and outboard processors. In fact, the Apollo x6 is capable of acting as a 5.1 surround sound monitor controller.

At any point, you can increase the power and capability of the Apollo x6 through integration of qualified Universal Audio hardware. Up to four Apollo interfaces and six total UAD-2 devices can be combined, allowing Thunderbolt users the ability to expand their I/O and DSP without abandoning the Apollo x6. The two Thunderbolt 3 ports are backward compatible with Thunderbolt 1 and 2 via a qualified adapter (available separately).

Heritage Edition

The Heritage Edition features the same Apollo x6 interface found in the standard edition, but with more plug-ins. The standard Apollo x6 includes the Realtime Analog Classics Plus bundle (16 plug-ins), and the Heritage Edition adds 18 more plug-ins for a total of 34 revered UA-powered plug-ins.

The Power of Apollo X

  • Track, overdub, and mix with elite-class AD/DA conversion and DSP-powered plug-ins
  • Dual-Crystal clocking features dedicated crystals for 44.1 / 88.2 / 176.4 kHz and 48 / 96 / 192 kHz sample rates, resulting in stunningly low jitter (under 10 picoseconds) for pure, artifact-free recordings and solid stereo imaging
  • HEXA Core UAD processing for tracking through models of vintage compressors, EQs, tape machines, mic preamps, and guitar amps with near-zero latency and 50% more DSP than earlier Apollos, all with no burden on your computer’s CPU
  • Unison technology nails the tone of sought-after tube and solid-state mic pres including their input impedance, gain-stage sweet spots, and the component-level circuit behaviors of the original hardware
  • Two high-speed Thunderbolt 3 ports for connectivity with Mac and Windows computers (Thunderbolt cable available separately)
  • 1 RU rackmount form factor with reliable AC powering (secure locking external power supply included)
  • Free industry-leading phone/online technical support from knowledgeable audio engineers

I/O for the Expanding Studio

  • 16×22 audio interface with two Unison-enabled microphone preamps, providing emulations of classic analog preamps with near-zero latency
  • Two front-panel, Unison-enabled 1/4″ Hi-Z inputs for direct connection of guitars, basses, or keyboards
  • 6×6 balanced analog line-level I/O via 1/4″ jacks
  • Stereo 1/4″ monitor output and two independent 1/4″ headphone outputs, each with adjustable level
  • Additional six 1/4″ line-level outputs may be used for feeding alternate monitor outputs, analog outboard processors, or a 5.1 surround sound speaker setup
  • Selectable operating level of +20 dBu or +24 dBu for out-of-the-box compatibility with professional mixing consoles and other high-end pro audio equipment
  • Four TOSLINK optical ports provide up to eight channels of ADAT I/O (supports SMUX) for integrating external converters, ADAT-equipped mic preamps, and headphone distribution systems
  • RCA coaxial ports enable recording and outputting S/PDIF stereo digital signal
  • BNC wordclock I/O with selectable 75-ohm termination, crucial for accurate synchronization with other digital equipment

Pro-Level Workflow

  • Built-in monitor controller with monitor remote functions and mono, mute, dim, and alt monitor controls
  • Integrated talkback and cues for easy communication and slate functionality
  • Comprehensive front-panel metering and fast, intuitive controls, no menu-diving required

Expandable I/O and DSP

  • Cascade up to four Thunderbolt-equipped Apollo interfaces and six UAD-2 Thunderbolt devices for expanded I/O and DSP
  • Backward compatible with Thunderbolt 1 and 2 via a qualified adapter (available separately)

34 Powered Plug-Ins

Includes Realtime Analog Classics Plus plug-in bundle plus 18 additional plug-ins to complete the compressor, EQ, and preamp collections and provide tape emulation and another reverb (plug-ins support VST, RTAS, Audio Units, and AAX 64-bit for compatibility with all major DAWs): 

  • UA 610-A Tube Preamp and EQ (Vintage)
  • UA 610-B Tube Preamp and EQ (Modern)
  • Marshall Plexi Classic Guitar Amp
  • Ampeg SVT-VR Classic Bass Amp
  • UA 1176LN Limiting Amplifier (Legacy)
  • UA 1176SE Limiting Amplifier (Legacy)
  • UA 1176 Classic Limiter Collection (1176LN Rev E, 1176 Rev A, and 1176AE 40th Anniversary Edition)
  • Pultec EQP-1A EQ (Legacy)
  • Pultec MEQ-5 EQ (Legacy)
  • Pultec Passive EQ Collection (EQP-1A, MEQ-5, and HLF-3C)
  • Teletronix LA-2A Leveling Amplifier (Legacy)
  • Teletronix LA-2A Classic Leveler Collection (LA-2A Silver, LA-2A Gray, and LA-2)
  • Teletronix LA-3A Audio Leveler
  • Helios Type 69 Preamp and EQ Collection (Helios Type 69 and Helios Type 69 Legacy)
  • V76 Preamplifier
  • Raw Distortion
  • Fairchild 670 Compressor (Legacy)
  • Fairchild Tube Limiter Collection (Fairchild 660 and Fairchild 670)
  • Precision Enhancer Hz
  • Precision Channel Strip (Precision Mix Rack Collection)
  • Precision Reflection Engine (Precision Mix Rack Collection)
  • Precision Delay Mod (Precision Mix Rack Collection)
  • Precision Delay Mod L (Precision Mix Rack Collection)
  • Pure Plate Reverb
  • RealVerb Pro Custom Room Modeler
  • UA Oxide Tape Recorder

Integration with LUNA Recording System for Mac

  • Works with all major DAWs including Logic Pro, Ableton Live, Pro Tools, and more
  • Apollo x6 becomes a fully integrated recording system with LUNA, a powerful free recording application for Mac from Universal Audio
  • Bolstered by Accelerated Realtime Monitoring, LUNA lets you track and mix using an intuitive single-window workflow with unlimited track counts, full Audio Units plug-in support, and access to a suite of exclusive LUNA instruments and extensions such as Studer Multitrack Tape and Neve Summing


Universal Audio

Universal Audio was re-founded in 1999 by Bill's sons, James Putnam and Bill Putnam Jr., with two main goals: to faithfully reproduce classic analog recording equipment in the tradition of their father; and to design new digital recording tools in with the sound and spirit of vintage analog technology. To that end, Universal Audio employs the world's brightest DSP engineers and digital modeling authorities to develop our award-winning UAD Powered Plug-Ins platform. Featuring the most authentic analog emulation plug-ins in the industry, our DSP gurus work with the original hardware manufacturers — using their exact schematics, golden units, and experienced ears — to give UAD plug-ins warmth and harmonics in all the right places, just like analog. Universal Audio Nepal : All kinds of universal audio such as Audio equipments, UAD plug-in, UAFX pedals and many more at the best price at Music Shop Nepal. Universal Audio is the world's leader in Thunderbolt audio interfaces, analog recording hardware, and UAD audio plug-ins. Explore products and shop now. Universal Audio has a long history in music production. Founded by Bill Putnam a long time ago, his son has taken the company into the 21st century with the UAD platform released in the 2000s Software or hardware, every Universal Audio product is backed by a decades long legacy of innovation, superlative quality, and technical passion.


Universal Audio Apollo X6 Specs

Form Factor Rackmount
Display 10 x Multi-Segment LED Meter
Channels of I/O Analog:
6 Inputs / 12 Outputs at 192 kHz
10 Inputs / 10 Outputs at 96 kHz
Max Sample Rate/Resolution 192 kHz / 24-Bit
Number of Mic Preamps 2
Input Level Adjustment 1 x Knob
Solo/Mute Mute per Master
Pad -20 dB (Switchable per Channel)
High-Pass Filter 75 Hz, 12 dB/Octave
Expansion Slots None
Analog Audio I/O 2 x XLR 3-Pin Balanced Mic Input
2 x 1/4″ TS Unbalanced Hi-Z Input (Front Panel)
6 x 1/4″ TRS Balanced Line Input
2 x 1/4″ TRS Balanced Monitor Output
6 x 1/4″ TRS Balanced Line Output
2 x 1/4″ TRS Unbalanced Headphone Output
Phantom Power +48 V, Selectable On/Off (Selectable on Individual Inputs)
Digital Audio I/O 2 x TOSLINK Optical ADAT Input (S/MUX4 Support)
2 x TOSLINK Optical ADAT Output (S/MUX4 Support)
1 x RCA Coaxial S/PDIF Input
1 x RCA Coaxial S/PDIF Output
Host Connection / USB 1 x USB Type-C (Thunderbolt 3)
USB (Non-Host) None
Sync I/O 1 x BNC Word Clock Input
1 x BNC Word Clock Output
Network I/O None
Wireless Connectivity None
Memory Card Slot None
Frequency Response Mic Inputs:
20 Hz to 20 kHz ±0.05 dB
Hi-Z Inputs:
20 Hz to 20 kHz ±0.04 dB
Line Inputs:
20 Hz to 20 kHz ±0.05 dB
Monitor Outputs:
20 Hz to 20 kHz ±0.06 dB
Line Outputs:
20 Hz to 20 kHz ±0.07 dB
Headphone Outputs:
20 Hz to 20 kHz ±0.05 dB
Gain/Trim Range Inputs:
+10 to +65 dB
Max Input Level Mic Inputs:
+26 dBu (with Pad)
Hi-Z Inputs:
+12.4 dBu
Line Inputs:
+24 dBu (with Pad)
Max Output Level Line/Monitor Outputs:
+24 dBu
Headphone Output Power 150 mW into 300 Ohms
Impedance Hi-Z Inputs:
1 Megohm
Line Inputs:
10 Kilohms
Line Outputs:
100 Ohms
Mic Inputs:
5.5 Kilohms
Monitor Outputs:
100 Ohms
Word Clock :
75 Ohms
Dynamic Range Mic Inputs:
122 dBA
Hi-Z Inputs:
121 dBA
Line Inputs:
123 dBA
Monitor Outputs:
129 dBA
Line Outputs:
127 dBA
Headphone Outputs:
125 dBA
THD+N Mic Inputs:
-114 dB / 0.0002% (1 kHz)
Hi-Z Inputs:
-111 dB / 0.00028% (1 kHz)
Line Inputs:
-113 dB / 0.00022% (1 kHz)
Monitor Outputs:
-118 dB / 0.00012% (1 kHz, at -1 dBFS)
Line Outputs:
-119 dB / 0.00011% (1 kHz, at -1 dBFS)
Headphone Outputs:
-102 dB / 0.0008% (1 kHz, at -1 dBFS)
Digital Audio
Sample Rates Up to 192 kHz
Sample Rate Conversion None
Bit Depths 24-Bit (AD/DA Conversion)
Latency 1.1 ms at 96 kHz (Input to Output)
Sync Sources ADAT, Internal, S/PDIF, Word Clock
Clocking Word Clock:
Input Termination: 75 Ohms (Switchable)
Lock Range: 44.1 to 192 kHz ±4% of Sample Rate
OS Compatibility macOS 10.12 / 10.13 / 10.14 / 10.15
Windows 10 (64-Bit Only)
Included Software LUNA Mac Only
Compatible Software (Not Included) Any Core Audio (Mac) Compliant Software
Supported Drivers/API & Plug-Ins Proprietary
Processor Requirement Intel Core i7
Storage Requirements 6 GB
Mobile Device Compatibility None
Required Hardware Available Thunderbolt 3 Port
Thunderbolt Cable (Not Included)
Internet Connection Required for Registration and Software/Driver Download
Power Requirements AC/DC Power Adapter (Included)
AC Input Power 100 to 240 VAC, 50 / 60 Hz
AC/DC Power Adapter 12 VDC at 6 A (Included)
Power Consumption 30 W (Typical)
72 W (Maximum)
Rackmount Size 1 RU
Operating Temperature 32 to 104°F / 0 to 40°C
Dimensions 19 x 13.5 x 1.8″ / 48.3 x 34.3 x 4.6 cm (Including Controls and Protrusions)
Weight 9.0 lb / 4.1 kg
Packaging Info
Package Weight 16.165 lb
Box Dimensions (LxWxH) 23.5 x 17 x 7.9″


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