Maxon AD-900 Delay 2ND HAND

$260.00 (AUD)

MIJ. Good condition with player wear. Converted to centre negative 12V DC to use standard power supplies.


With 600 milliseconds delay time, the AD900 is a more advanced unit than either the AD80 or AD-9. Instead on one Panasonic MN3205, the AD900 features four Panasonic MN3008 high-voltage BBD's. The AD900 runs off a special 12-volt adaptor which gives it more headroom and less chance of overdriving the input with hot pickups. Sonically, some people feel the AD900 is slightly darker than either the AD80 or AD-9. However, in our experience we've found it to be very similar in tone to its smaller cousins, save for the extended delay time.


The AD900 Vintage Series Analog Delay was discontinued in 2003. In short, the unit had become too expensive to manufacture, and the high-voltage BBD's used in the circuit were becoming increasingly harder to find. Meanwhile, Maxon had located a source of current production low-voltage BBD's and decided to design a new Analog Delay around them ­ the result is the AD999. The AD999 was designed to address many of the complaints and shortcomings associated with the AD900. While the AD900 ran at 12-volts and required a special power adaptor, the AD999 runs at 9­volts, allowing easier integration into your pedalboard. The AD999 features 900 milliseconds of delay, a full 300 mS longer than the AD900's 600 mS maximum. In addition, the AD999 features stereo (wet/dry) outputs while the AD900 only had a single output (wet/dry mix). Lastly, the AD999 features mechanical true bypass switching on both outputs, while the AD900 featured mechanical non-true bypass w/buffered in/out.

Sonically, the AD999 is slightly darker than the AD900, which is due to the additional BBD's required for its extended delay time. However, this difference will mainly be noticed in longer delay settings, and at shorter delay times the units are quite similar. Overall, the AD999 is a superior unit from a features standpoint, and is already gaining praise and popularity for its rich, thick analog delay textures