Zoom A1 FOUR Multi-Effects Processor

Zoom A1 FOUR Multi-Effects Processor



Expected in 3 months or longer

Zoom A1 FOUR Multi-Effects Processor
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The Zoom A1 FOUR multi-effects processor is the first effects pedal of its kind providing fantastic effects for acoustic and wind instruments including acoustic guitar, saxophone, trumpet, violin, harmonica and acoustic bass.

First Of Its Kind

There's never been anything like this before!

The Zoom A1 FOUR is the first multi-effects processor designed for a variety of acoustic string and wind instruments.

Featuring specially designed effects, a built-in looper and a drum machine, with the Zoom A1 FOUR you can take your performance to places no one's ever been.

Zoom A1 FOUR Multi-Effects Processor Key Features:

  • Over 80 Effects
  • Over 35 Newly Designed Ground Breaking Effects
  • Dedicated Effects for Acoustic Guitar, Saxophone, Trumpet, Violin and Harmonica
  • Use Up to 5 Effects Simultaneously
  • 50 Memory Locations for User-Created Patches
  • Anti-Feedback Filter
  • 68 Rhythm Patterns to Play Along With
  • Built-In Looper
  • Zoom Guitar Lab Software for Creating, Editing and Managing Effects and Patches
  • Onboard Chromatic Tuner
  • Output Jack for Connecting To Your Amp or Headphones
  • Includes Zoom MAA-1 Microphone Adapter
  • Get Up to 18 Hours of Operation with 4 AA Batteries, MAA-1 Requires 2 AA Batteries
  • USB Port for Firmware Updates, Power and Connecting to Zoom Guitar Lab

Enhance Your Acoustic Guitar

With fantastic acoustic emulators and high quality modelling, the Zoom A1 FOUR adds incredible depth and dimension to your acoustic guitar sound.

You have 15 presets for the acoustic guitar straight out of the box with an additional 13 available as a free download via the Guitar Lab software.

With these settings you choose from a range of famous and popular acoustic guitar models such as the D-28 and get an amazing recreation of their sound.

Using Impulse Response technology, the sonic character of all guitar shapes and body has been intricately recreated for the A1 FOUR.

Furthermore, you can adjust the sound of each model with Gain, Bass, Mid and Treble controls to get the exact sound you're looking for.

You can even choose different patches to match the type of pickup you're using, whether its Piezo or Magnetic and add EQ that is modelled on a range of specific, dedicated processors.

A New Soundscape for Your Saxophone

From gritty rock 'n' roll sax performances to lush, chorus-infused jazz fusion sax sounds, the A1 FOUR has a range of saxophone effects to give you all manner of sonic possibilities.

There's even a newly developed "SaxChorus" effect that gives you a beautifully natural sounding double-track with thick response.

A range of ready-made EQ and Compressors settings are built into the Zoom A1 FOUR to instantly improve your sound, retaining the acoustic warmth of your saxophone, even when playing through an amplified mic.

Classic and Futuristic Trumpet Sounds

With the Zoom A1 FOUR you can enhance your trumpet sound in a number of ways from bright, electric jazz trumpet to the unique Auto Wah for something completely different.

Evolve Your Violin

Several settings on the Zoom A1 FOUR multi-effects processor allow you to really evolve and manipulate the sound of your violin.

You can make it sound as if your solo violin performance is an entire string section, or go somewhere darker with a raw, distorted metal sound.

Breathe New Life Into Your Harmonica

Enhance your harmonica's sound or experiment with completely new sounds great presets and control options.

Enjoy the Bullet Mic simulation of the "Green Bullet", get the famous Stevie chorus effect with the "Hm SteviewW" patch and use the various controls onboard to manipulate your sound and create something completely unique to you.

Bolster Your Upright Bass

The Zoom A1 FOUR has a number of tools for making your acoustic bass sound better than ever.

Focused highs and rich lows give you everything you need to go from classical music to attitude-packed rockabilly and everything in between.

You can create even create your own signature sound with the powerful parameter controls, add octaves and select piezo effects.

Zoom MAA-1 Mic Adapter

Included with the Zoom A1 FOUR is a Zoom MAA-1 mic adapter for easy connection.

It works equally well with dynamic microphones and condenser microphones as it provides phantom power when needed.

Thanks to this mic adapter, you can add effects and adjust settings for any acoustic instrument.

Free Zoom Guitar Lab Software

Available as a free download, Zoom Guitar Lab is an extremely convenient patch and effects management software package.

With the Zoom A1 FOUR's USB port, you can connect it to your computer to edit your patches on your computer and download more and transfer them over for use whenever you want.

It's an easy way to edit and create your own sounds and is perfect for experimentation.

More Fantastic Features

One of the most prevalent issues with amplifying acoustic instrument is unwanted feedback. With this in mind, Zoom have developed an Anti-Feedback Filter with the A1 FOUR uses to detect and cut the problematic frequencies that cause feedback.

Two pedals on the Zoom A1 FOUR (along with a few numbers and buttons) give you easy access and full control over everything you need from this powerful acoustic effects unit.

With Memory Mode you can program your entire setlist and jump patch-to-patch. Using Stomp Mode you can toggle individual effects on and off by stomping on the pedals.

So you've always got something to play along with, the Zoom A1 FOUR comes with 68 different rhythm patterns to perform with. Jazz, Reggae and Samba styles and more are all on board and you have a variety of time signatures to choose from to get the perfect performance.

You can even play along with your own performance thanks to the built-in looper. With 30 seconds of recording time you can create multi-part arrangements for exciting, dynamic performances all on your own.

There's never been anything like this before.

Buy the Zoom A1 FOUR multi-effects processor to add incredible effects and amazing performance potential that you never thought possible with acoustic instruments.

Zoom A1 FOUR Multi-Effects Processor Specs:


  • 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 Section


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

Output Section


  • Standard stereo phone jack (combined line/headphone)
  • Maximum output level: Line +2 dBu (10 kOhms or more output impedance)
  • Headphones 17 mW + 17 mW (32Ohms load)
  • Input S/N: 120dB
  • Noise floor (residual noise): -97dBu


  • 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 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

Zoom A1 FOUR External Dimensions

  • Size (D x W x H): 156mm X 130mm X 42mm
  • Weight: 340g (excluding batteries)

Zoom MAA-1 Microphone Amplifier Specs:


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


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


  • 2 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)

Zoom MAA-1 Microphone Amplifier External Dimensions

  • Size (D x W x H): 177mm x 23mm x 25mm
  • Weight: 70g (excluding batteries)

0 dBu = 0.775 V

More Information
Manufacturer Zoom
SKU 306891
Shipping Weight (kg) 0.640000


We have a wide range of Delivery Options available, depending on the value of your parcel and budget. Select from our 2-3 Day Saver Service or our Next Working Day options at the Checkout.
This will include a text or email on the day of delivery giving you an exact hour window of when your gear will be with you, and the drivers name - just so you know when to turn the volume down!

  • Free Delivery Available on Selected Products
  • Weekend UK Mainland Delivery (Saturday-Sunday): £19.99
  • Small Items (Under 750g) Small items will be delivered by Royal Mail starting from 99p
  • Heavy Items (Over 30kg): Pallet Service Doorstep Delivery £65

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