A1 Four

A1 FourThe Zoom A1 FOUR is a groundbreaking multi effects processor designed specifically for acoustic instruments, offering an impressive range of tools to enhance performance and creativity for musicians playing acoustic guitar, violin, saxophone, trumpet, harmonica, upright bass, and more. Unlike traditional effects units, which are often tuned for electric guitars, the A1 FOUR features over 80 onboard effects, including more than 35 custom designed for

The Zoom A1 FOUR is a groundbreaking multi-effects processor designed specifically for acoustic instruments, offering an impressive range of tools to enhance performance and creativity for musicians playing acoustic guitar, violin, saxophone, trumpet, harmonica, upright bass, and more. Unlike traditional effects units, which are often tuned for electric guitars, the A1 FOUR features over 80 onboard effects, including more than 35 custom-designed for acoustic instruments, capturing their unique tonal qualities and playing dynamics. Whether you're aiming for subtle warmth or bold sonic transformation, the A1 FOUR provides a wide palette of sounds tailored for both live and studio use.

At the heart of the A1 FOUR is a flexible and intuitive system capable of running up to 5 effects simultaneously, chained in any order. It features an acoustic-optimized interface with dedicated presets, including models for different guitar body types using Impulse Response (IR) technology, and EQ curves matched to common pickup styles. The unit also includes a 30-second looper, 68 rhythm patterns, and support for Zoom Guitar Lab software, enabling endless customization and patch management. Built for portability and performance, it runs on 4 AA batteries (up to 18 hours of operation), includes a built-in chromatic tuner, and outputs to either headphones or amp. Whether you’re enhancing the character of your violin with smart distortion shaping, recreating the warmth of a bullet mic on harmonica, or modeling your favorite acoustic guitar tone, the Zoom A1 FOUR offers musicians a tailored, powerful solution to unlock their acoustic potential.