MIDIROCK.XYZ
The hardware MIDI field guide

Make your gear
work together.

Clear answers for synths, drum machines and the MIDI connections between them. Manual sources are visible; untested workflows are labelled. Built for the moment something stops working.

Start hereKorg Prophecy BPM calculator
Choose a task

What do you need to do?

01 / Browse

Find my gear

MIDI settings, manuals and useful device-specific answers.

02 / Route

Connect devices

Wiring, clock roles and step-by-step connection plans.

03 / Diagnose

Fix a problem

Get the first checks immediately, then follow the evidence.

04 / Calculate

Use a tool

Quick MIDI and tempo utilities that stay out of your way.

First deep device guide

Meet the
Prophecy.

Original Korg Prophecy hardware, with a focused MIDI reference and common fixes sourced from Korg’s own Parameter Guide.

Explore the device
KORG / ORIGINAL HARDWARECOMMON FIXArpeggiator won’t sync?Check Clock Source and incoming MIDI Clock.REFERENCEFind the MIDI settingsGlobal Channel, Local, Program Change and SysEx.
Fast utilities

Answers in a few taps.

All tools
Tempo

BPM → milliseconds

Find note and delay times from a tempo.

Pitch

MIDI note finder

Translate number, note name and frequency.

Patches

Program Change

See zero-based and one-based numbering side by side.