The new AD-9 Pro model improves on one of Maxon's most coveted models in order to produce the best-sounding, most reliable analog delay ever. Featuring 4 of Maxon's proprietary MC4107D bucket brigade IC's, and the world's first RMS level sensor and companding noise reduction system, the AD-9 Pro delivers 450 millseconds of the most transparent analog delay sound ever available in a stompbox format.

Offering improved headroom, the AD-9 Pro can accept any input signal and will work in an amplifier's effects loop as well as its front-end. The AD-9 Pro also features a switchable multi-head tape echo simulator function. This feature provides interesting new delay effects such as the ''Ping Pong'' repeats made famous by Tape Echo units as well as ambient effects that recreate the echoes of a large concert hall with stunning accuracy.

AD-9 Pro is outfitted with mechanical true bypass switching on both wet and dry outputs by use of a 4PDT switch assuring pure, unaltered tone when bypassed.
In a world that grows more ''digital'' by the day, the Maxon AD-9 Pro sets a new standard of analog innovation and audio purity. The Maxon AD9Pro is a high quality analog delay with up to 450ms of delay time using Maxon’s MC4107D BBD chip. With two delay modes and a wide range of control, the AD9Pro offers transparent analog delays that fit any genre.

Features

• Switchable Single Head/Dual Head modes. In Dual Head mode, the midstream delay signal is mixed back into the delay. This feature provides extensive delay effects such as a multi-head tape echo effect and endless ambient sounds.
• Four BBD chips for up to 450ms of delay time
• RMS level sensing and companding noise reduction providing a clear and natural sounding analog delay
• Improved dynamic range
• True bypass switching on both outputs provided by a 4PDT mechanical switch with no alteration of dry signal’s tone when effect is bypassed
• Stabilized DC to DC converter impervious to battery voltage drop and fluctuations in power providing rock solid tone and functionality.
• LED indicator for effect on/off
• DC power or 9V battery
• Made in Japan