midi audio interfaces

MIDI I/O varies widely. Small, portable interfaces may offer a single 1-in/1-out DIN-MIDI pair, mid‑range units often provide multiport setups (for example, 4 in × 4 out 5‑pin DIN plus USB‑MIDI host ports), and some devices support larger setups with up to 16 MIDI channels of I/O.

Common physical MIDI connections include traditional 5‑pin DIN‑MIDI ports, USB‑MIDI (host and device ports), and Ethernet‑based RTP‑MIDI network connectivity.

Many interfaces include combo XLR/TRS inputs (or separate XLR and 1/4" jacks) with mic/instrument switching, built‑in mic preamps, and switchable +48V phantom power for condenser microphones.

Several interfaces offer built‑in MIDI routing tools that can merge, filter, and remap MIDI data. Many also provide onboard presets so you can store and recall routing/merge/filter configurations (examples include units that let you save up to four presets directly on the device).

Product listings show both 24‑bit converters and a 32‑bit integer option. Advertised sample rates include 96 kHz and 192 kHz.

Power options vary: some units are USB bus‑powered, others require an external DC supply, and a few support battery power. Examples in listings include support for 2×AA batteries or an optional 5.4V DC PSU; some devices explicitly list no battery use.