Zoom A1 Four Acoustic Multi-Effects Processor

SKU: ZOA1FOUR MFR: A1 FOUR
$129.99
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Key Features

  • Enhance your acoustic sound with the Zoom A1 Four's versatile multi-effects processor.
  • Explore 50 user patches on this acoustic effects pedal, crafting unique sonic textures for gigs.
  • Achieve pristine audio quality with 24-bit conversion, perfect for studio recording sessions.
  • Compact & durable design makes this multi-effects unit ideal for travel and live performances.
  • Easily power via AC adapter or batteries for up to 18 hours, ensuring you're always ready to play.
  • The Zoom A1 Four offers seamless USB connectivity for MIDI control and convenient power options.
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Special Order?Estimated to Ship: 08/10/2025
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Zoom A1 Four Specifications

A1 FOUR

A1 FOUR

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  • Maximum number of simultaneous effects

    5

  • User patches

    50

  • Sampling frequency

    44.1 kHz

  • A/D conversion

    24-bit, 128x oversampling

  • D/A conversion

    24-bit, 128x oversampling

  • Signal processing

    32-bit

  • Display

    128x32 dot matrix LCD

  • Input

    Standard mono phone jack
    Rated input level: -20 dBu
    Input impedance (line): 470 kOhms

  • AUX IN

    Stereo mini jack
    Rated input level: -10 dBu
    Input impedance (line): 1kOhms

  • Output

    Standard stereo phone jack (combined line/headphone)
    Maximum output level: Line +2 dBu (10 kOhms or more output impedance)
    Headphones 17 mW + 17 mW (32 Ohms' load)

  • Input S/N

    120dB

  • Noise floor (residual noise)

    -97 dBu

  • 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)

  • USB

    USB MIDI, USB Micro-B
    Power can also be supplied through the USB port
    When using a cable designed only for power, other USB functions cannot be used

  • Input

    INPUT XLR balanced input (2: hot)
    Input gain: +3 - +30 dB
    Input impedance: 10 k Ohms
    Maximum input level: +4 dBu
    +48V phantom power

  • Output

    Standard mono phone jack
    Nominal output level: -20 dBu
    Maximum output level: +7 dBu
    Output impedance: 1 kOhms

  • Power

    2x AA batteries
    Continuous operation time (when phantom current is 3 mA)
    About 15 hours (using alkaline batteries)
    About 15 hours (using nickel metal hydride batteries)

General

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  • Dimensions (DxWxH)

    A1 FOUR: 156 x 130 x 42mm (6.14 x 5.12 x 1.65")
    MAA-1: 177 x 23 x 25mm (6.97 x 0.91 x 0.98")

  • Weight

    A1 FOUR: 340g (11.99 oz) (excluding batteries)
    MAA-1: 70g (2.47 oz) (excluding batteries)

  • UPC Code

    884354021986

9 Accessories for Zoom A1 Four Acoustic Multi-Effects Processor

  • All Accessories (9)
  • Batteries & Power Supply (6)
  • Cables & Adapters (3)

Designed For Use With:

  • Bass Pedal
  • Guitar Pedal

Need Help?

For any questions about compatibility with this product, call us at 800-223-2500 or you can email us any time.

About Zoom A1 Four

Where acoustic instruments meet advanced technology, the A1 Four Acoustic Multi-Effects Processor stands as a revolutionary tool for musicians. This first-of-its-kind processor is specifically designed for a wide range of acoustic string and wind instruments, offering a built-in looper and drum machine for enhanced performance capabilities.

The A1 Four comes preloaded with over 80 extraordinary effects, including more than 35 innovative effects meticulously designed for acoustic instruments. These effects unlock a world of warm, rich tones for your acoustic guitar, transforming live performances with sounds reminiscent of country, blues, and unplugged sessions. The processor's acoustic guitar modeling feature adds depth and dimension, replicating the tone of your favorite guitar make and style with precision.

Using IR (Impulse Response) technology, the A1 Four captures the unique sonic fingerprint of various guitar shapes and bodies. It offers a selection of 15 factory presets, with an additional 13 available for free download via Guitar Lab. Each model can be fine-tuned with four parameters (Gain, Bass, Mid, Treble) to control volume and refine audio output.

The A1 Four also extends its capabilities to wind instruments, offering sax players a soundscape of possibilities. The all-new "Sax Chorus" effect delivers a natural double-track and thick tone response, while ready-made settings for EQ and Compressors ensure your sax maintains its warm acoustic sound, even when amplified.

Trumpet players can explore sounds from the bright tones of electric jazz to our signature Auto Wah effect. The A1 Four also caters to violinists, harmonica players, and upright bass players, offering genre-specific effects and simulations for a truly immersive musical experience.

The A1 Four is not just a processor; it's a creative partner. It supports ZOOM Guitar Lab software, allowing you to explore an endless world of patches and effects. With two performance modes, MEMORY and STOMP, you can effortlessly toggle between patches and effects, program your entire set list, and turn individual effects on and off with a simple foot tap.

The A1 Four also includes an Anti-Feedback Filter to detect and cut frequencies that cause potential feedback, and a built-in looper that can record up to 30 seconds for creating dynamic, multi-part arrangements. With 68 rhythm patterns designed for acoustic music, you can play along with a variety of time signatures, from Samba and Reggae to Jazz.

The A1 Four Acoustic Multi-Effects Processor is more than just a tool; it's a gateway to a new realm of musical possibilities.

Zoom A1 Four Features

  • 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
  • ZOOM Guitar Lab software for creating, editing and managing effects and patches
  • 68 built-in rhythm patterns tailored for unplugged styles of music can be used in combination with the Looper
  • Onboard chromatic tuner supports all standard guitar tunings, including open and drop tunings
  • Output jack for connection to amp or headphones
  • A1 FOUR runs on 4 AA batteries, with alkaline battery life of 18 hours; MAA-1 Requires 2 AA batteries
  • USB port for firmware updates, power and connection to ZOOM Guitar Lab

Product Documents

User Manual

Key Features

  • Enhance your acoustic sound with the Zoom A1 Four's versatile multi-effects processor.
  • Explore 50 user patches on this acoustic effects pedal, crafting unique sonic textures for gigs.
  • Achieve pristine audio quality with 24-bit conversion, perfect for studio recording sessions.
  • Compact & durable design makes this multi-effects unit ideal for travel and live performances.
  • Easily power via AC adapter or batteries for up to 18 hours, ensuring you're always ready to play.
  • The Zoom A1 Four offers seamless USB connectivity for MIDI control and convenient power options.

What's in the box:

  • Zoom A1 Four Acoustic Multi-Effects Processor
  • MAA-1 Mic Amp
  • Quick Guide
  • Patch List
  • (6AA Batteries Not Included)
  • Zoom 1 Year Limited Warranty