MOTU 16A (Thunderbolt 4)

The MOTU 16A TB4 is a 1U, 16-in/16-out analog line interface built for the kind of playback and IEM rig that needs a lot of balanced I/O without burning a second rack space. Sixteen TRS inputs and sixteen TRS outputs cover stems-out to a monitor console, sends back in for talkback or audience feeds, and still leaves room to grow. The AVB port means it can hand audio across a network to another interface or a network-enabled console when the rig scales up, and the Thunderbolt 4 connection keeps the computer link fast and reliable for DAW-direct workflows.

At 1U and 178 mm deep, it sits comfortably in a shallow touring rack — that depth matters when you're sharing a 12U case with a Mac Mini, a power conditioner, and a patch bay. Eighteen watts nominal draw is modest enough that it won't stress a single-outlet power conditioner, and the 25-watt max gives you a realistic ceiling to budget against. The full-rack width means all sixteen TRS jacks are front-accessible, which is the right answer at load-in when you're patching quickly in low light. AVB runs over standard Cat6 to an EtherCon connector, so extending audio to FOH or a stage split doesn't require a separate digital snake.

This interface belongs in a playback rig or IEM rack where you need genuine 16-channel analog depth from a single rack unit and want AVB networking available as the rig evolves. It's a strong fit for a touring playback engineer running stems to a monitor world console, or a band's self-contained IEM setup that may eventually tie into a larger AVB infrastructure. If you only need eight or fewer outputs and are cost-sensitive, there are smaller MOTU interfaces that cover that ground for less. If your workflow is entirely USB and you have no plans to use AVB, you're paying for capability you won't touch — but if there's any chance the rig grows, the headroom is worth it.