Welcome To Steve's Music Center !

Maxon AD-9 Pro Analog Delay


Maxon AD-9 Pro Analog Delay A pure and crystal-clear analog delay with 4 Maxon BBD IC (MC4107D) chips. The AD9Pro features up to 450mSec delay time. With the world’s first RMS level sensor and noise reduction system, transparent analog delay sound is finally available in a stompbox format.

With AD9Pro, typical aliasing and clock noises in analog delay are minimized. Dynamic range was improved by 18dB and maximum input level by 12dB, compared with AD9. Improved low range response yields bold sound. Excellent balance between low and high range offers clear and firm delay sound without spoiling warm sound of analog delay.

Single Head/Dual Head Mode is switchable with newly added tape echo multi-head simulation function. In Dual Head Mode, midstream delay signal (which is taken from the middle of BBD delay circuit) is added into normal delay signal. This feature provides extensive delay effects such as tape echo multi-head simulation and ambience effect of a concert hall.

True Bypass Switching on both outputs with 4PDT mechanical switch. No alteration to tone of dry signal when effect is bypassed.

Two-way power operation, using 9V alkaline battery or optional AC adaptor.

(9V alkaline battery: more than 7 hours, 9V manganese battery: more than 2 hours) Easy-access, tool-free battery compartment.

AD9Pro uses a stabilized DC to DC converter to bump up to 9V (plus and minus 4.5V). Battery voltage drop and fluctuation of AC power source do not affect the tone and function.


 Input Impedance  500k ohms
 Output Impedance  10k ohms or less
 Residual Noise  -100dB or less (IHF-A)
 Delay Time  20mSec ~ 450mSec
 Control  DELAY TIME
 Operating Voltage  9V
 Power Consumption  DELAY TIME MIN 39mA/DC.9V  38mA/DC.10V
 Power Consumption  124mm(D)×74mm(W)×54mm(H)
 Weight  580g (including battery)
 Battery  9V battery (6LR61 or 6F22) x 1 or Maxon AC adaptor
 Battery life  manganese dry battery more than 2 hours
 25deg C / 77deg F (Panasonic 6F22NB)
 alkaline dry battery more than 8 hours
 25deg C / 77deg F (Panasonic 6LR61G)
 Maxon AC adaptor(Option)  AC210

Specifications subject to change without notice.

Hear it!