USB MIDI vs Bluetooth MIDI: Which Should You Use?

> ⚠️ Update (2026-06): Bluetooth input has been retired. Super Simple Piano now focuses exclusively on USB MIDI for the most reliable practice experience. The comparison below is preserved for general reference.

Both connect a MIDI keyboard to your browser. Both work fine. But there are real tradeoffs, here's when each one wins.

Latency

USB MIDI is essentially instant: 1–3 ms round-trip. Bluetooth MIDI typically adds 10–25 ms.

For most users, BT latency is unnoticeable. For fast staccato passages or jazz comping at speed, USB feels tighter. If you've ever been bothered by mic-mode latency, you'll probably notice BT too. Winner: USB.

Reliability

USB never drops. BT can drop if you walk away from the laptop, when WiFi interferes (BT shares 2.4 GHz), or if the piano's BT firmware has bugs.

For a 90-minute practice session, USB is the safer bet. Winner: USB.

Cable hassle

USB needs a 1–3 metre USB-A to USB-B cable trailing across your practice space. BT is wireless, laptop on the kitchen table, piano against the wall, no cable.

If your piano lives in a different room from your laptop, BT is the only practical option. Winner: BT.

Setup time

Both are about the same, click Allow for USB MIDI permission, or tap the Bluetooth button and pick from the chooser.

Winner: tie.

Multi-device

USB ties you to one laptop. BT lets you re-pair to phone / tablet / different laptop without rewiring. Winner: BT.

Our recommendation

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Both work. Pick based on your space, not on benchmarks. See the full setup guide or try it on any song.