Dedicated effects for acoustic guitar, saxophone, trumpet, violin, harmonica, and acoustic bass
Looped for recording up to 30 seconds/ 64 beats of CD-quality audio with seamless start and end times
50 memory locations for storing user-created Patches
68 built-in rhythm patterns tailored for unplugged styles of music can be used in combination with the looped
A1 FOUR and A1X FOUR runs on 4 AA batteries, with alkaline battery life of 18 hours; MAA-1 Requires 2 AA batteries