Check the rear LINE/MIC selection for your source, then raise REC GAIN until the input is healthy but not clipping. The Quick Start Guide says a low level may not cross the record-trigger threshold.
Try these checks
- Connect the audio source to the rear INPUT and choose the appropriate LINE/MIC position.
- Open RECORD mode and play the source while watching the level meter.
- Set REC GAIN as high as practical without reaching the right edge of the meter.
- Press DO IT to record-enable, then start the source again.
Diagnose it
Does the meter show a very low or no signal?
Yes: Check cabling, LINE/MIC selection and REC GAIN before record-enabling again.
No: Use DO IT again; the second press starts recording without waiting for input.
What should happen
The MPC500 starts sampling when the input passes the trigger threshold, or immediately after the second DO IT press.
Why this happens
Akai’s quick-start procedure links low level to a missed input trigger and documents the meter, REC GAIN and two DO IT behaviors.
If it still doesn’t work
Check the connections and settings described above. If your device behaves differently, email us with its model, firmware version and the steps you tried.
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Sources & review
Sources reviewed: . Documentation does not replace a physical hardware test.
- MPC500 Quick Start Guide · Akai Professional · last checked 2026-09-26
Sections reviewed: Quick Start Guide pp. 6–7.