I am a retired musician, and the first time I ran an optical cable between two pieces of gear, I had no idea the format dated back to a cassette tape machine from the late 1980s 🎚️
Direct answer first. ADAT is an 8-channel optical format built for connecting a preamp or interface over a short distance, a few meters at most. AES50 is a Behringer and Midas networking standard carrying up to 48 channels each direction over a single Cat5 cable, built for connecting a full stage box to a digital mixer across a venue.
Here is the number that puts the gap in perspective. ADAT carries 8 channels on one optical cable. AES50 carries 48 channels in each direction on a single Cat5 cable, according to IEMRig’s protocol comparison, and the X32 and M32 family specifically use dual AES50 ports for 96 channels each direction combined.
By the end of this guide, you will know what each format actually does, why they solve completely different problems, and which one your gear actually needs.
This guide draws on the AES standards body’s own documentation, manufacturer specs, and technical comparisons. It does not rest on bench testing, so I name the source whenever I share a specific figure.
Quick Verdict
| Channel count | ADAT carries 8 per cable. AES50 carries up to 48 each direction per cable. |
| Cable type | ADAT uses optical TOSLINK-style cable. AES50 uses shielded Cat5 with EtherCon connectors. |
| Max distance | ADAT runs a few meters reliably. AES50 runs up to 100 meters. |
| Typical use | ADAT expands one interface’s inputs locally. AES50 connects a stage box to a mixer across a venue. |
| Compatibility | ADAT is a widely adopted open format. AES50 is used almost exclusively by Behringer and Midas gear. |
You want ADAT if you’re adding a handful of extra mic preamps to an existing interface in the same room. You want AES50 if you’re running a stage box across a venue to a digital mixing console.
What Is ADAT Actually Built For?
Adding more analog-to-digital conversion to a system that’s already short on inputs.
Production Expert’s technical history traces the format back further than most people expect. ADAT Lightpipe originated as a way to make bit-for-bit digital transfers between Alesis’s original ADAT 8-track machines, tape-based digital recorders from the late 1980s. The format stuck because it was simple, cheap, and carried a useful 8 channels down one cable.
Sound On Sound’s guide names the real limitation that defines how people use it today. If your interface has only a single optical port, you can use it to add additional inputs, or additional outputs, but not both at once. Its quota is fixed, one direction or the other.
The ADAT Sample Rate Tradeoff
Higher sample rates cost you channels, and this trips up a lot of first-time buyers.
Production Expert’s breakdown gives the exact numbers. The original ADAT design handles the full 8 channels only at 44.1 or 48kHz. A technique called S/MUX, developed by Sonorus, lets ADAT run at higher rates by splitting data across multiple channel slots, but it costs you channel count to do it.
| Sample rate | Channels per ADAT cable |
|---|---|
| 44.1 or 48 kHz | 8 |
| 96 kHz (S/MUX) | 4 |
| 192 kHz (S/MUX) | 2 |
Sound On Sound’s guide flags one more real limit. The Lightpipe format itself has no provision for carrying control data alongside the audio, so it can’t be used for synchronization or transport control, only straight audio transfer.
Our Behringer X32 Core review covers how that console actually uses its ADAT ports in practice.
What Is AES50 Actually Built For?
Running a full stage box across a real venue, not a desktop.
IEMRig’s protocol comparison explains the question AES50 exists to answer. Why am I running 32 XLR cables to front of house is the question every live sound engineer eventually asks, and digital audio networking, including AES50, is the answer. A single Cat5e cable carries dozens of channels each way instead of a literal snake of individual cables.
Wikipedia’s technical entry on AES50 confirms it was formally approved in 2005 as a royalty-free open standard, built specifically for high-resolution multi-channel audio over the four pairs inside a standard Cat5 cable. In practice, IEMRig notes it has become Behringer and Midas’s answer to MADI, the older coax-based standard other manufacturers favor instead.
Our Behringer X32 review and X32 vs Midas M32 comparison both cover how AES50 connects those consoles to their stage boxes in real setups.
Why Doesn’t Other Gear Use AES50?
Because it’s effectively a single-brand ecosystem, and IEMRig’s guide says so without hedging.
Behringer and Midas talk AES50 to each other, and almost nothing else does. If you’re buying a stage box to pair with an X32 or WING console, AES50 compatibility within that ecosystem is excellent. If you’re hoping to mix and match AES50 gear with a console from another brand, that compatibility mostly doesn’t exist.
The same guide adds a real wiring warning worth knowing before you run a long cable run. AES50 needs shielded Cat5e, sometimes labeled STP, since unshielded UTP cable can pick up RF noise on long runs and cause dropouts, a problem a short desktop ADAT cable never has to deal with.
My take as a musician. If you’re already inside the X32 or WING ecosystem, AES50 is a non-issue, just use proper shielded cable. If you’re shopping across brands, this is the single biggest reason to check compatibility before buying a stage box 🎸
ADAT vs AES50 at a Glance
| Factor | ADAT | AES50 |
|---|---|---|
| Connector type | Optical (TOSLINK-style) | Cat5 with EtherCon |
| Channels per cable | 8 at 48kHz, fewer at higher rates | 48 each direction |
| Max reliable distance | A few meters | 100 meters |
| Control data | None, audio only | Yes, packet-based control overlay |
| Cross-brand support | Wide, an open standard | Essentially Behringer and Midas only |
| Typical use case | Expanding a desktop interface’s inputs | Connecting a stage box across a venue |
Numbers are drawn from the AES standards body, Wikipedia’s technical comparison of audio network protocols, and the manufacturer and technical sources cited throughout this guide.
Where Do Dante and MADI Fit In?
They solve the same high-channel-count problem AES50 does, just for other brands.
IEMRig’s comparison lists all three side by side. MADI runs over BNC coax or fiber, carrying 64 channels over 100 meters of coax or up to 2 kilometers over fiber, and predates AES50 as an older, widely supported standard across many brands. Dante runs over standard Cat5e or Cat6 Ethernet, scaling from 64 channels on a 1 gigabit network up to 512 or more on 10 gigabit, and has become the closest thing to a universal cross-brand standard in live sound.
The practical takeaway. If you’re buying into the Behringer or Midas ecosystem specifically, AES50 is the native choice and works seamlessly. If you want gear that talks to equipment from many different manufacturers, Dante is the safer long-term bet, since it has the broadest adoption of the three.
A Real-World Example of When Each One Gets Used
Picture a podcaster with a Scarlett 2i2 who wants two more mic inputs for guest episodes. If their interface has an ADAT input, adding a cheap 8-channel ADAT preamp box solves it instantly, over a cable that only needs to reach across a desk.
Now picture a church running an X32 console at front of house with the band and vocal mics on stage, 60 feet away. Running 20-plus individual XLR cables that distance is a real cable management problem. One shielded Cat5e cable carrying AES50 from an S16 or DL32 stage box solves it in a single run, with the console seeing every input as if it were plugged in locally.
Same underlying need, completely different scale, which is exactly why these are two different formats rather than one trying to do both jobs.
Which One Do You Actually Need?
Match the format to the actual physical distance and channel count your setup requires.
- Adding a few extra mic preamps to a desktop interface. Use ADAT
- Connecting a stage box across a stage or venue to a mixer. Use AES50
- Need more than 8 channels on one cable. AES50 is the only option of the two
- Running a cable longer than a few meters. ADAT isn’t reliable for this, use AES50 or another networked format
- Mixing gear from different brands. ADAT is the safer bet for cross-brand compatibility
Did You Know 🤯
ADAT Lightpipe exists because of a cassette-tape digital recorder from the late 1980s. Alesis needed a way to transfer eight tracks of digital audio between its ADAT machines bit for bit, and the resulting Lightpipe format outlived the tape format it was built for by decades.
ADAT vs AES50 FAQ
Can I use ADAT and AES50 on the same system?
Yes, on gear that supports both.
The X32 family has both ADAT and dual AES50 ports, used for different jobs in the same signal chain.
Does ADAT support higher sample rates?
Yes, at a cost.
S/MUX enables 96kHz or 192kHz, but cuts channel count to 4 or 2 respectively.
Can I run AES50 with non-Behringer gear?
Rarely.
AES50 is effectively limited to Behringer and Midas equipment, despite being an open AES standard on paper.
What cable does AES50 actually need?
Shielded Cat5e, specifically.
Unshielded UTP cable can pick up RF noise on longer runs and cause real dropouts.
Is ADAT still relevant in 2026?
Yes.
It remains one of the simplest, cheapest ways to add preamp inputs to an interface that already has an optical port.
Is Dante better than AES50?
For cross-brand gear, yes.
Dante has far broader manufacturer adoption. Within the Behringer and Midas ecosystem, AES50 works just as well.
Can ADAT replace AES50 for a stage box?
No.
ADAT’s short cable range makes it unsuitable for the venue-scale distances a stage box typically needs to cover.
So match the format to your actual distance and channel count, pick accordingly, and start recording 🎶
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