MadReal · Logic Pro MIDI-FX

MIDI Amber

Freeze the take.

Catch a live MIDI performance the moment it happens — and freeze it into a tempo-locked file you drag straight onto the track.

Audio Unit · aumi / MFXF · Universal

MIDI Amber plugin capturing a performance in Logic Pro
captured · 12 notes● rec

You hear it once.

Logic's MIDI-FX — arpeggiators, chord triggers, generative tools like Cthulhu — shape notes in real time, but that stream never lands on the track as editable MIDI. The perfect accident plays once and it's gone. MIDI Amber catches it, holds it, and hands it back as a file.

Signal flow

One insert, mid-chain

Source
Cthulhu, arp or chord trigger
MIDI Amber
Captures & freezes
Your track
Editable .mid region

Sits in the MIDI-FX slot right after your generator. Nothing else in the chain changes.

The session

Capture, freeze, drag out

1.1.1
MIDI Amber — Insert & arm
Insert & arm

Drop MIDI Amber into the MIDI-FX slot after your generator and press the record knob.

2.1.1
MIDI Amber — Play it live
Play it live

Every note flowing through is captured in real time and drawn on the built-in piano-roll.

3.1.1
MIDI Amber — Drag it out
Drag it out

Pull the capture onto a track, or hit EXPORT MIDI — a tempo-locked Standard MIDI File, snapped to the bar.

Demo

From Cthulhu to a region, in one pass

cthulhu → midi amber → region · muted loop

Under the hood

Built like real software

A from-scratch recreation — and revival — of the discontinued AudioCR "Midi FX Freeze", rebuilt as a single Objective-C++ Audio Unit with a custom Cocoa interface, signed and shipped in a drag-install DMG under the MadReal name.

Format
Audio Unit · MIDI-FX
Codes
aumi / MFXF / AuCR
Host
Logic Pro · macOS
Build
Universal — Silicon + Intel
Output
Standard MIDI File (.mid)
Stack
Objective-C++ · Cocoa

The interface

Idle, recording, captured

MIDI Amber — Idle
Idle
MIDI Amber — Recording
Recording
MIDI Amber — Captured
Captured

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The outcome

A native-feeling tool, ready to sell

MIDI Amber installs like any pro plug-in and sits under MadReal in Logic's menu — a sharp little utility that fills a real gap, ready for its own product page.

MIDI Amber freezing a Cthulhu performance into an editable region in Logic Pro