UA's Apollo Twin X is a desktop 10×6 Thunderbolt 3 interface built around Unison-enabled mic preamps and onboard UAD SHARC processing (DUO or QUAD variants). Two combo XLR/TRS inputs and a dedicated front-panel 1/4-inch Hi-Z jack feed the preamps. Two balanced 1/4-inch monitor outputs and two 1/4-inch line outputs cover stereo monitoring plus an auxiliary pair, with a front TRS headphone out. An optical TOSLINK input carries ADAT or S/PDIF for eight channels of external expansion. Power comes from the included external supply — Thunderbolt bus power is not supported.
Device Information
- Manufacturer
- Universal Audio
- Release Year
- 2019
- Model Number
- Apollo Twin X (DUO/QUAD)
- Category
- Audio Interface
Source: manufacturer product page · Last updated: · How we verify port data →
Available Ports
| Connector | Quantity | Power (PD) | Capabilities | Label | Notes |
|---|---|---|---|---|---|
| XLR (3-pin Balanced Audio) | 2 | — | — | Mic/Line Inputs 1 & 2 — XLR (rear, combo) | Unison-enabled mic preamps with 48V phantom; XLR portion of combo jacks. |
| 6.35mm TRS (1/4 inch Audio) | 2 | — | Same jack | Mic/Line Inputs 1 & 2 — 1/4" (rear, combo) | Line-level portion of combo jacks. |
| 6.35mm TRS (1/4 inch Audio) | 1 | — | — | Hi-Z Instrument Input (front) | Unbalanced Hi-Z instrument input for guitar/bass, replaces Channel 1 when plugged in. |
| 6.35mm TRS (1/4 inch Audio) | 2 | — | — | Monitor Outputs L/R (rear, balanced) | Main balanced 1/4" monitor outputs with level control. |
| 6.35mm TRS (1/4 inch Audio) | 2 | — | — | Line Outputs 3/4 (rear, balanced) | Secondary balanced 1/4" line outputs (ALT) for cue feeds or power amps. |
| 6.35mm TRS (1/4 inch Audio) | 1 | — | — | Headphones (front) | Stereo 1/4" TRS headphone output with dedicated level control. |
| Optical TOSLINK (S/PDIF) | 1 | — | — | Optical In (ADAT / S/PDIF) | Single TOSLINK input carrying ADAT (up to 8ch @ 48kHz, SMUX at higher rates) or stereo S/PDIF, selectable in Console. |
| Thunderbolt 3 (USB-C) | 1 | — | DP Alt Mode Thunderbolt | Thunderbolt 3 (rear, to host) | Thunderbolt 3 host connection. No bus power — device requires external PSU. |
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Notes & Compatibility
Thunderbolt 3 only, and it can’t be bus-powered: it needs the included 12V DC barrel PSU (not listed in the port table). No MIDI I/O. ADAT and S/PDIF share the single TOSLINK jack (not simultaneous). The two rear inputs are combo sockets, so the XLR rows and the rear 1/4-inch rows in the table above describe the same pair of holes — two cables to buy, not four. Universal Audio also sells an Apollo Twin X USB for Windows that carries a USB-C port in place of the Thunderbolt 3 one, so confirm which variant is on the desk before ordering a lead. UA’s product page now documents the Gen 2 revision of this interface; the 2019 unit here has the earlier converters and the same connector layout.