MOTU 848
MOTU·Model 848·motu-848
Photos
Manufacturer product photography — the drawn faceplate above stays true to panel layout; these show the hardware itself.
About the MOTU 848
The MOTU 848 is the flagship of the current line: 28-in/32-out over Thunderbolt 4/USB4 with four mic preampsThe gain stage that lifts a mic’s tiny signal up to line level — the first thing a signal hits, and a big part of how a console sounds., eight line ins and outs, dual ADATOptical digital audio: 8 channels at 48 kHz down one Toslink lightpipe (4 at 96 kHz). The usual way to add more channels to an interface. banks, and AVBAudio Video Bridging — open network audio (MOTU, PreSonus) where the switch reserves bandwidth so streams can’t glitch. Milan is its pro profile. networking. It is the 828 concept with more of everything, aimed at rigs that need mic inputs, stem outputs, and network audio from one rack space. Pairs naturally with the TB4-generation 16A for channel expansion.
The MOTU 848 is a single-rack-unit interface that tries to be the only audio device your playback or IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. rig ever needs to argue with. It carries four combo mic preampsThe gain stage that lifts a mic’s tiny signal up to line level — the first thing a signal hits, and a big part of how a console sounds., eight additional TRSTip-Ring-Sleeve — a 1/4″ jack with three contacts carrying a balanced signal or a stereo pair. A guitar plug with one extra ring. line inputs, eight balancedCarries the signal on two wires and cancels whatever noise both pick up — why mic cables can run hundreds of feet hum-free. TRS outputs plus a dedicated stereo main out, two full ADATOptical digital audio: 8 channels at 48 kHz down one Toslink lightpipe (4 at 96 kHz). The usual way to add more channels to an interface. banks, and a 32-channel AVBAudio Video Bridging — open network audio (MOTU, PreSonus) where the switch reserves bandwidth so streams can’t glitch. Milan is its pro profile. Ethernet port — all behind a Thunderbolt 4 connection to your host machine. That is a lot of I/O surface area for one rackspace, and the point is consolidation: one box to receive stemsSub-mixes of a session grouped by instrument (drums, keys, vocals) — how playback rigs run tracks with live control over each group. from a DAWDigital Audio Workstation — the recording and playback software (Logic, Ableton Live, Pro Tools) at the center of a computer rig., route them to IEM transmitters, and still have mic inputs for talkbackThe engineer’s mic into the performers’ ears or monitors — talk to the band without leaving the console. or backing-vocal spot mics without a separate preamp sitting in the rack.
At 18 watts nominal and a shallow 178 mm depth, the 848 won't stress a small rack or a two-outlet power strip. The Thunderbolt 4 connection keeps latencyThe delay between sound entering and leaving a digital system. IEM rigs fight to keep the whole chain down to a few milliseconds. low enough for real-time monitoring on a live rig, though you'll still want buffer settings dialed in during soundcheck, not at showtime. The dual ADATOptical digital audio: 8 channels at 48 kHz down one Toslink lightpipe (4 at 96 kHz). The usual way to add more channels to an interface. banks are the real workhorse for expansion — two optical runs at 44.1/48 kHz give you up to 16 additional channels in and out to something like an expander or a stage boxThe I/O endpoint on stage: mics plug in there and one digital line (AES50, Dante) carries everything to the console. The snake, digitized.. The AVBAudio Video Bridging — open network audio (MOTU, PreSonus) where the switch reserves bandwidth so streams can’t glitch. Milan is its pro profile. port is genuinely useful if you're in a venue or with a console ecosystem that speaks AVB natively, but don't plan around it if your system is entirely point-to-point analog and ADAT.
This box belongs in a Mac-centric playback or IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. rig where the operator needs mic preampsThe gain stage that lifts a mic’s tiny signal up to line level — the first thing a signal hits, and a big part of how a console sounds., multi-stem outputs, and future expansion headroomThe margin between your normal level and where things clip — headroom is what absorbs the snare hit you didn’t see coming. without stacking units. If you're running a straight two-track playback rig with no mics and no expansion, the 848 is more interface than you need and you'll leave most of it dark. Engineers working on PC rigs should verify Thunderbolt 4 compatibility carefully — USB4 mode exists, but test your specific machine before committing. And if your channel count has already outgrown 28 inputs, MOTU's own 16A pairs cleanly via ADATOptical digital audio: 8 channels at 48 kHz down one Toslink lightpipe (4 at 96 kHz). The usual way to add more channels to an interface. or AVBAudio Video Bridging — open network audio (MOTU, PreSonus) where the switch reserves bandwidth so streams can’t glitch. Milan is its pro profile. for expansion rather than replacing this unit.
In the rack
- Label your ADATOptical digital audio: 8 channels at 48 kHz down one Toslink lightpipe (4 at 96 kHz). The usual way to add more channels to an interface. runs at both ends with the bank letter (A or B) and sample rateHow many times per second audio is measured when digitized — 48 kHz is the live standard; 96 kHz measures twice as often. before the cables go in the rack — at load-in, a mispatched optical cable between banks is silent and invisible.
- Use the eight TRSTip-Ring-Sleeve — a 1/4″ jack with three contacts carrying a balanced signal or a stereo pair. A guitar plug with one extra ring. line outputs for your IEMIn-Ear Monitor — earpieces that replace floor wedges, feeding each player their own mix. The reason this whole rack exists. mix sends and reserve the Main Out L/R as a dedicated confidence feed or FOHFront Of House — the main mix the audience hears, and the console position out in the room where it gets mixed. reference, so you never accidentally reroute a transmitter feed during a software patch.
- If you're clock-slaving outboard gear via ADATOptical digital audio: 8 channels at 48 kHz down one Toslink lightpipe (4 at 96 kHz). The usual way to add more channels to an interface., designate the 848 as clock master and set everything downstream to external — chasing a flapping clock mid-set on optical is a headache you can eliminate at line checkThe quick pre-show pass confirming every input reaches the console, one line at a time. Not a soundcheck — just does it work..
- At 178 mm depth it fits most shallow touring rack drawers, but account for the Thunderbolt cable bend radius behind the unit — a right-angle TB4 cable saves real estate and prevents strain on the port if the rack lid closes tight.
Flagship 28x32 TB4/USB4 interface with AVBAudio Video Bridging — open network audio (MOTU, PreSonus) where the switch reserves bandwidth so streams can’t glitch. Milan is its pro profile. and dual ADATOptical digital audio: 8 channels at 48 kHz down one Toslink lightpipe (4 at 96 kHz). The usual way to add more channels to an interface..
I/O Ports (11)
| Port | Connector | Direction | Signal | Channels |
|---|---|---|---|---|
| Mic/Line 1-4 | COMBO XLR TRS | input | analog audio | 4 |
| Line In 5-12 | TRS QUARTER | input | analog audio | 8 |
| Line Out 1-8 | TRS QUARTER | output | analog audio | 8 |
| Main Out L/R | TRS QUARTER | output | analog audio | 2 |
| ADAT In A | TOSLINK | input | digital audio | — |
| ADAT Out A | TOSLINK | output | digital audio | — |
| ADAT In B | TOSLINK | input | digital audio | — |
| ADAT Out B | TOSLINK | output | digital audio | — |
| Thunderbolt 4 | THUNDERBOLT | bidirectional | data | — |
| AVB Network | ETHERCON | bidirectional | digital audio | 32 |
- Power (IEC C14)
Deciding between two?
Rack space, watts, weight and every connector, side by side.
Related gear
Related articles
Guides from our library that cover planning around audio interface gear.
How to choose between a digital mixer, a Thunderbolt interface, and a Dante converter as the brain of your IEM rack — with concrete picks at each tier.
How to build a live-performance playback rig that runs click + backing tracks reliably — interface sizing, routing rules, software comparison, and what to do when the laptop crashes.
How to build a fail-safe live playback rig with primary + backup laptops, an auto-switching audio interface, and a failover workflow you can actually trust on a Sunday morning.
LTC vs MTC vs MIDI Clock, how to generate timecode from Ableton or Playback, how lighting and video receive it, and the frame-rate mistake that drifts every show.