THIS TINY DSP AMBIENCE PROCESSOR™ HAS TWO CATHEDRAL  ALGORITHMS plus 8 additional fuctions such as chorus and Leslie effect. THOSE THAT HAVE PURCHASED OUR ORIGINAL DSP PROCESSORS KNOW HOW WELL THE OLDER ALLEN ORGANS SOUND WITH THIS PRODUCT. WE HAVE RETAINED THE MIX AND INPUT LEVEL CONTROL AND ADDED A SECOND AUDIO OVERLOAD INDICATOR L.E.D. As you can see from the pictures, the size is about half the original so it is a simple matter to install this almost anywhere. The 9VAC power supply is included. Notice the improved mounting ears. The size is 3.5" deep X 5" wide including the mounting ears X 1.2" high. THE SOUND IMPROVEMENT IS AMAZING WHEN COMPARED TO SPRING TYPE REVERBS OR STANDARD DIGITAL REVERS. YOU CAN EVEN PARALLEL AND SERIES THESE FOR UNLIMITED REVERBERATION EFFECTS. OTHER POSSIBILITIES INCLUDE THE ADDITION OF THE TRAVELING WAVE GENERATOR™ THAT PRODUCES THE SAME CONTINUAL PHASE SHIFT PRODUCED BY AN ORGAN PIPE. WHEN YOU COUPLE THIS WITH THE CATHEDRAL REVERB FUNCTION THE SOUND IS PHENOMENAL