I am selling my UAD Apollo X4 (1st generation).


Technically flawless and fully functional

No noise or rattling sounds, runs cleanly and reliably

Minor signs of use on the knob, purely cosmetic, nothing functional

No other damage or defects


The unit can be viewed and tested on site.

Upon purchase, it will be transferred to the buyer’s own UAD account, including the plugins.

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.

Listed5 months ago
ConditionGood (Used)
Good condition items function properly but may exhibit some wear and tear.Learn more
Brand
Model
  • Apollo x4 QUAD Thunderbolt 3 Audio Interface
Finish
  • Gray
Categories
Year
  • 2019 - Present
Made In
  • United States
Sample Rate
  • 192 khz
Bus-Powered
  • No
Electronics
  • Digital
  • Analog
  • Solid State
Digital Output Format
  • ADAT/Optical
Compatibility
  • macOS
  • Windows
Format
  • Desktop Standalone
Digital Input Format
  • ADAT/Optical
Bit Depth
  • 24-bit
Computer Connectivity
  • Thunderbolt
Simultaneous I/O
  • 12 x 18
Number of Channels
  • 28
Number of Headphone Outputs
  • 2
Number of MIDI Outputs
  • 0
Number of MIDI Inputs
  • 0
Number of Digital Outputs
  • 8
Number of Digital Inputs
  • 8
Number of Analog Outputs
  • 6
Number of Analog Inputs
  • 6
Number of Mic Preamps
  • 4

Product safety information may be available here.

Mirness Gear Outlet

Zwentendorf an der Donau, Austria
Joined Reverb:2026

Reverb Protection

Simple Returns, Secure Transactions, Human Support

Learn more

Secure Checkout

Promoted similar listings













Product reviews

Reverb Gives

Your purchases help youth music programs get the gear they need to make music.

Oops, looks like you forgot something. Please check the fields highlighted in red.