Stream REAPER to your iPhone

Set it up in REAPER

1. 01

   Install and rescan

   Run the free MixOutpost installer and choose the Audio Unit, the VST3, or both. Let REAPER rescan its plugins so MixOutpost appears in the FX browser.

2. 02

   Add it to the Master track FX

   Open the Master track FX chain and add MixOutpost. Drag it to the bottom of the chain, below your limiter and meters. REAPER runs the chain top to bottom, so last in the list means last in the signal path.

3. 03

   Start Sharing and pair

   Press Start Sharing in the plugin window and scan the QR code with the MixOutpost app or the iPhone Camera. The pairing covers every MixOutpost instance on the Mac.

4. 04

   Play and tap Listen

   Start playback. The project comes through on the phone and keeps playing with the screen locked.

Tips for REAPER users

• Master FX, not monitoring FX: put MixOutpost on the Master track FX chain so it hears the mix. If you use monitoring FX for room correction or headphone calibration, the phone won't hear those, which is usually what you want.
• Save it in a track template or the default project: if you check every mix on the phone, keep MixOutpost in your project template's Master chain. Sharing stays off until you press Start Sharing, so it doesn't broadcast just because a project opened.
• Stems and buses: REAPER's flexible routing makes it easy to put a second instance on a folder track or a bus. Each instance is its own source on the phone, and Compare switches between two sources, with click-free switching and a volume per source for matching levels.
• Try both formats: REAPER loads AU and VST3 side by side. Both formats are verified in Ableton Live, so use whichever you prefer in REAPER.
• Busy network? If Wi-Fi is crowded, the phone's buffer adapts, and you can connect the phone by wire. See wired Ethernet on iPhone.

What you can check from the phone

Once REAPER is playing on your iPhone, listen in mono or side only, watch integrated loudness and true peak against streaming and broadcast targets, and use the diagnostic EQ to hear a small-speaker curve without touching your chain. The Record button captures a bit-exact 32-bit float WAV on the phone, so a client can walk out with the mix in their pocket.

REAPER users often do audiobook and podcast work too. The loudness screen includes an optional Apple Podcasts target, and EBU R128 for broadcast.

If the phone can't find REAPER

MixOutpost finds your Mac with Bonjour on the local network. If discovery is blocked, connect by address; paired phones remember each source's address, and each source keeps its network port between sessions. More in troubleshooting the connection.