Up for sale, a Maxon AD-900 analog delay in exceptional condition and in perfect working order, complete with the original box and paperwork. This is the original, discontinued iteration of the AD-900 featuring a pair of Panasonic MN3005 chips.
The AD-900 was designed to provide the longest, warmest, smoothest all-analog delay tone ever. Controls and features were kept to a minimum to free the circuit from unwanted noise and complexity of operation, as evidenced by the unit's simple three-knob layout and single output. Delay Time, Repeat, and Delay Level controls allow for precise adjustment of the delay effect with zero guesswork.
The AD-900 circuit runs at a higher voltage than typical analog delay circuits, which provides the unit with significantly more operating headroom. This increased headroom eliminates input overload distortion and creates a more accurate reproduction of the input signal in both dry and delayed modes.
The pair of Panasonic MN3005 chips offer 40-600 milliseconds of delay time, roughly double that of most analog delays. With this increased delay time a much wider variety of echo effects can be attained, from tight slap echoes and long trailing delays to overlapping "sound on sound" textures. The AD-900 is custom-calibrated for self-oscillation at higher feedback settings, creating wild "ray-gun" and "UFO-landing" special effects.
Cosmetic wear is limited to some small nicks and scuffs on the purple finish. The graphics are minty, and the knobs and foam pad on the back are intact.