Maxon · AD9 Pro
The AD9 Pro is Maxon's modern take on the analog delay it first built for Ibanez's 9 series. Instead of one bucket-brigade chip, it runs four of Maxon's own MC4107D chips with compander noise reduction, for up to 450 milliseconds of delay. Maxon clocks them slowly to reach that time, which rolls off the highs and gives the warm repeats people buy analog delays for. A switch adds a second tap partway through the delay, a nod to multi-head tape echoes like the Roland Space Echo. It has stereo wet and dry outputs and a 4PDT true bypass switch. Its voltage regulator pulls about 2000 mA for an instant at startup, so on a shared pedalboard supply it may not turn on unless it's plugged into a high-current outlet. Maxon's workaround is leaving a battery in while you power up. If you want long analog repeats with modern switching, this is a strong choice. If you want the vintage box, look at the Ibanez AD9.
If it won't power up on a pedalboard supply, the high startup current is the usual cause. Otherwise watch for worn pots, a tired switch, and noisy repeats that could point to a failing delay chip.
We haven’t been through this pedal’s listings yet. Search eBay for the exact model and run every listing through the checklist above. Ask for a photo of the bottom plate and a short video of the pedal on and off through an amp, and pass on any listing that won’t show them.
Search “Maxon AD9 Pro analog delay” on eBay ↗eBay searchPlenty of used pedals turn up without a power supply. Check the power line in the specs above, then match the voltage and plug before you buy one. This searches Amazon for the usual kit.
Search power supplies ↗Amazon searchIbanez · Ibanez 9 series
DelayAD9
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