With specially engineered effects, built-in looper and drum machine, the A1/A1X FOUR is the first Multi-Effects Processor designed for a variety of acoustic string and wind instruments.
INPUT: Standard mono phone jack. Rated input level: -20 dBu. Input impedance (line): 470 kΩ. AUX IN: Stereo mini jack. Rated input level: -10 dBu. Input impedance (line): 1kΩ.
Outputs
OUTPUT: Standard stereo phone jack (combined line/headphone). Maximum output level: Line +2 dBu (10 kΩ or more output impedance). Headphones 17 mW + 17 mW (32Ω load).
Maximum number of simultaneous effects: 5. User patches: 50. Sampling frequency: 44.1 kHz. A/D conversion: 24-bit, 128× oversampling. D/A conversion: 24-bit, 128× oversampling. Signal processing: 32-bit. Display: 128x32 dot matrix LCD. Input S/N: 120dB. Noise floor (residual noise): -97 dBu. External dimensions A1 FOUR: 156 mm (D) × 130 mm (W) × 42 mm (H). Weight: 340 g (excluding batteries).
Effects
A1 FOUR offers over 80 built-in effects. Dedicated effects for acoustic guitar, saxophone, trumpet, violin, and harmonica. Up to 5 effects can be used simultaneously, chained together in any order. 50 memory locations for storing user-created patches. Looper for recording up to 30 seconds / 64 beats of CD-quality audio with seamless start and end times. 68 built-in rhythm patterns tailored for unplugged styles of music can be used in combination with the Looper.
Power
AC adapter: 9V DC 500mA center negative (ZOOM AD-16). 4 AA batteries (about 18 hours continuous operation time when using alkaline batteries with the LCD backlight off).
Power Supply
AC adapter: 9V DC 500mA center negative (ZOOM AD-16); 4 AA batteries; USB
