Maxon AD-900 Analog Delay Description: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.This here is one of the earlier models that used the famous MN3005 chips instead of the MN3008's. Condition: Great condition. See the pics for more. Knobs have been replaced and the power jack has been modified to use the much more common centre-negative power adaptor (adaptor not included).Shipping:We offer plenty of options for both domestic and international shipping! All prices include secure and sturdy packaging to ensure your pedal arrives safely. Orders regularly ship same day if ordered by 9am. Domestic:All our domestic orders are sent via Australia Post or Transdirect Couriers. We offer FREE SHIPPING within Australia, along with additional options for Express and Registered. All Australian shipping includes a tracking number. International:All of our international orders ship via Australia Post and are calculated by weight. All our services include a tracking number, so you can follow the progress of your pedals journey across the globe. We also offer both Express and Courier (via EMS) services if you need your pedal in a hurry. Returns: We only offer returns on faulty or broken items, not if you change your mind. All pedals are thoroughly tested here and we'll do our best to list any known troubles in the condition section above. Visit mojostompboxes.com for discounted prices on all our gear along with our other services including repairs, modifications, demo videos and more!