Acoustic Effects
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Legendary Zoom Effects

A1 Four / A1X Four

For Acoustic Guitar, Saxophone, Trumpet, Violin, Harmonica, Acoustic Bass and More


With professional 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.   



Exceed Expectations with Extraordinary Effects


The A1/A1X FOUR is preloaded with over 80 effects, including more than 35 new groundbreaking effects specifically designed and engineered for acoustic instruments.



X is for Additional Xpression


The A1X FOUR comes with 8 additional pedal-controlled effects to adjust volume, pitch, reverb, delay, and wah.  



Unlock All the Potential of Your Acoustic Guitar


Add a multitude of warm and rich tones to your guitar. From live "unplugged” performance sounds to the finger-playing style of country and blues, there’s so much to choose from. Gorgeous effects and acoustic guitar modeling will take your instrument to places it’s never been before.


Acoustic Guitar Modeling


Add depth and dimension with acoustic emulators and modeling. Refresh your instrument’s natural sound, allowing your live performances to sound just like your studio recordings. Select and hone in on the tone of your favorite guitar make and style.

The A1/A1X FOUR make it easier than ever to process the sound of your own Acoustic Guitar.
With a selection of 15 factory presets (plus13 more available as free download on Guitar Lab), you can select your favorite AG MODEL, D-28 for example, and recover instantly the sound character of that renowned and original body shape.

IR (Impulse Response) technology is used to capture the sonic fingerprint all guitar shapes and bodies available on the A1/A1X FOUR and via Guitar Lab. Each AG MODEL can be adjusted with 4 parameters (Gain, Bass, Mid, Treble) to control the volume and refine the audio output of your modeled sound.

In Patches you can also set the AG Pickup Selector (AG PU SEL) to match your guitar’s pickup type (Piezo or Magnetic) and add a specific EQ modeled on a variety of dedicated processors.




Give Your Sax an Entirely New Soundscape 


Perform that gritty, rock-and-roll sax growl. Or use the lush custom-chorus effect to emulate the sound of jazz fusion.The A1/A1X Four gives sax players a soundscape of possibilities.


The all-new "SaxChorus” effect delivers a more natural double-track and thick tone response by softening the modulated sensation typical of a chorus designed for the electric guitar.


With ready-made settings for EQ and Compressors your sax will preserve its acoustically warm sound, even when amplified through mics.



Take Your Trumpet Back to the Future


From the bright sound of electric jazz to our signature Auto Wah sound effect,the A1/A1X gives you inspiration for any style you play.


With the "Tp MD70” preset patch the Pedal Wah sound is tuned, resonates and adapts to the low frequency range and curve of the Trumpet.



Turn Your Violin Into an Orchestra and More


From the rich, full sound of a string symphony to the raw, distorted explosion of heavy metal, the A1/A1X FOUR have effects for every genre you and your violin are called to play.



Give More Body to Your Harmonica’s Soul


Play punchy, mid-range sounds of a blues harp, or experiment with your own new sounds. Breathing new life into your harmonica has never been so much fun.


Play through the preset patch "Hm StevieW” and get that famous harmonica sound as the chorus’s wet signal effect is modified to fit the frequency response of the chromatic harmonica.


The A1/A1X even provides you with a truly effective simulation of the Bullet Mic, also known by harmonica players as the Green Bullet. Select the preset patch "Hm Juke” and now hear the legendary amplified, warm tone of the Green Bullet come to life, even when using any standard vocal microphone.



Take Your Double Bass to New Heights

With focused highs and rich lows, the A1/A1X Four gives you control and flexibility from classical to rockabilly and all styles in between. Add octaves, select your piezo effect or create your own unique signature sound.


The Technology

Popular effects such as Distortion, Chorus and Wah are typically designed to work with the electric guitar. The A1/A1X FOUR provide all-new effects that are engineered to process the unique signals generated by acoustic instruments.

For example, with the sax and trumpet, original acoustic sounds are controlled by the musician blowing the horn with more or less intensity.  As an example, the Wah effects are uniquely re-voiced in the A1/A1X FOUR by adding a Low Pass Filter (LPF) to best control the processed frequency response of the instrument. This allows musicians to hit the peak frequency points while still blowing naturally into the instrument, without losing any expected sonic response of attack and release.


Another example is the violin. The bowing attack is key to the expression of the violinist.
To recreate the electrified sensation of distortion without losing the bowing attack, the DIST effect for Violin shifts the clipping 1 octave higher, boosts the high frequency and reduces the lows. This creates a more balanced saturation that suits the sonic characteristics of the violin.

Guitar Lab Supported


With a free download, ZOOM Guitar Lab software explore an endless world of patches and effects. And with its added ability to edit effects and arrange patches designed for Acoustic Instruments, you can experiment and create endless combinations.



The Perfect Partner


The Zoom MAA-1 mic adapter provides a hassle-free connection to the A1/A1X FOUR.  It works with dynamic microphones and even provides phantom power for condenser mics. Add effects to any acoustic instrument and adjust gain settings with the MAA-1’s easy-access controls.


Tap Into Your Performance


Effortlessly toggle between patches and effects with two performance modes. MEMORY mode makes it easy to program your entire setlist by jumping from patch to patch. Use STOMP mode to turn individual effects on and off with the tap of your foot.



No More Feedback

The Anti-Feedback Filter detects and cuts frequencies that cause potential feedback.




Drum & Percussion Included


Choose from 68 rhythm patterns designed for acoustic music including Samba, Reggae, and Jazz. Play along with a variety of time signatures.


Looped In

The built-in looper can record up to 30 seconds and allows you to create dynamic, multi-part arrangements.



The First Effects Pedal for Acoustic Musicians




·        A1 FOUR offers over 80 built-in effects / A1X FOUR offers over 90 built-in effects

·        Dedicated effects for acoustic guitar, saxophone, trumpet, violin, harmonica and acoustic bass

·        Up to 5 effects can be used simultaneously, chained together in any order

·        50 memory locations for storing user-created patches

·        30-second looper

·        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 and A1X 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

*Manufacturer names and product names mentioned in this presentation are trademarks or registered trademarks of their respective owners and do not indicate any affiliation with ZOOM CORPORATION.  All product and artist names are intended only to illustrate sonic characteristics that were used as reference in the development of this product.



What’s in the Box

·        A1 FOUR or A1X FOUR Multi-Effects Processor

·        MAA-1 Mic Amp

·        AA Batteries (6)

·        Quick Guide

·        Patch List



Maximum number of simultaneous effects:


User patches:


Sampling frequency:

44.1 kHz

A/D conversion:

24-bit, 128× oversampling

D/A conversion:

24-bit, 128× oversampling

Signal processing:



128x32 dot matrix LCD



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


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



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)

Input S/N:


Noise floor (residual noise):

-97 dBu


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 can also be supplied through the USB port.
When using a cable designed only for power, other

USB functions cannot be used.

External dimensions:

Height: 156 mm (D) × 130 mm (W) × 42 mm (H)
Weight:  340 g (excluding batteries)

Height:  156 mm (D) × 216 mm (W) × 52 mm (H)
Weight:  610 g (excluding batteries)





INPUT XLR balanced input (2: hot)
Input gain: +3 – +30 dBu
Input impedance: 10 kΩ
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 kΩ


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)

External dimensions:

Height:  177 mm (D) × 23 mm (W) × 25 mm (H)
Weight : 70 g (excluding batteries)
                 0 dBu = 0.775 V

ID Description Price Availability
FXM007X A1X FOUR ACOUSTIC MULTI FX $329.00 Available