❝ Aspri, the pocket spring reverb for acoustic guitar is a fantastic PHYSICAL effect. No Bluetooth. No batteries! ❞
- Vernon Reid
Guitar Legend & Founder of Living Colour
Acoustic Pioneers
Explore our revolutionary journey since 1968.
Creative Liberty
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Purity, Unplugged
Master your sound: a simple step-by-step guide.
Boundless Exploration
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The difference is not just heard, it's felt
Discover the Aspri: the acoustic guitar’s answer to the piano’s pedal.
Without any modifications, it captures vibrations from the strings and envelops them in a lush reverb, resonating directly from your guitar’s sound hole. This seamless process wraps your music in layers of depth and resonance, effortlessly transforming your guitar into an acoustic sensation. The Aspri is more than an accessory; it’s a revolution in natural sound.
Watch Mario Guini, renowned guitarist for Marc Anthony and Jennifer Lopez, showcase the Aspri’s transformative sound on both nylon and steel-string guitars.
Discover what leading artists are saying about the Aspri
The Aspri Reverb is awesome because it gives you reverb just live… It totally creates a mood for live performance. Love this thing!

Andy Grammer, platinum-selling recording artist
I’m stunned! It’s so simple, and so genius and subtle at the same time!

Brendan Benson, singer-songwriter, producer, and co-founder of The Raconteurs
Where has this thing been all my life. Instant inspiration guys!

Chris Henderson, lead guitarist of 3 Doors Down
The best analog spring reverb I have heard in a long time & best of all I can bring it with me anywhere!

Eren Cannata, guitar player for Demi Lovato, and co-owner/producer of Cove City Sound Studios
Not only does it sound amazing but it inspires and truly captivates you.

Mario Guini, lead guitarist of Marc Anthony, and guitarist of Jennifer Lopez
Playing around with my Aspri Reverb for acoustic guitars, they are insane, guitarists and musicians check them out.

Sandy Beales, bass guitar player for One Direction
Aspri, the pocket spring reverb for acoustic guitar is a fantastic PHYSICAL effect. No Bluetooth. No batteries!

Vernon Reid, guitar legend & founder of Living Colour
Having a blast with the Aspri reverb unit. Super cool little invention. Like playing your acoustic in the studio with headphones on and all the great sounding. Inspiring reverb… Definitely cool for songwriting.

Zakk Wylde, guitar legend & founder of Black Label Society
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FAQs
Absolutely! The Aspri is designed to work perfectly with acoustic guitars lacking transducers or pickups, delivering rich reverb naturally.
The Aspri fits most standard acoustic guitars. However, it’s not suitable for guitars with split saddles, highly compensated bridges, or those that exceed 9 inches in stretch, including some grand guitars.
Yes, the new Aspri has been redesigned in 2023, maintaining only the aesthetic resemblance to its predecessors.
Make sure the Aspri is securely clipped onto your guitar and doesn’t obstruct string movement. If you notice any rattling, buzzing, or lack of reverb, it’s likely an indication of incorrect installation. For detailed guidance on proper setup, please refer to our instructions page.
Absolutely, the Aspri is designed for easy removal and reattachment, without any hassle.
The Aspri is designed to be easily removable. However, it won’t harm your guitar if left attached.
No, the Aspri is designed with the safety of your guitar in mind. It is equipped with mark-free rubber pads that prevent the unit from scratching or damaging the finish of your guitar, ensuring it remains in pristine condition.
It’s not recommended as it won’t produce optimal sound and might even cause damage to the strings.
While there isn’t a mechanical adjustment for reverb level, the Aspri responds dynamically to your playing. The intensity and duration of the reverb (usually between 2 and 6 seconds) are controlled by how hard you strum, giving you natural control over the effect.
While the Aspri slightly shortens the string length by about 2mm, affecting tuning, this change is usually inaudible. However, if playing with other musicians, we recommend retuning your guitar after attaching the Aspri for optimal harmony.
Absolutely! The Aspri is not only great for personal use but also shines on stage. If your guitar is equipped with a transducer or pickup, you can easily connect the Aspri to an amp, and the results are phenomenal. In fact, renowned artists have showcased the Aspri in major events. For instance, Mario Guini used the Aspri during his performance with Marc Anthony at the Latin Billboard Awards, highlighting its exceptional stage compatibility.
Not at all. Both models are lightweight, weighing less than 1 pound.
Certainly! Our warranty ensures your peace of mind by covering any manufacturing defects for 1 full year from the date of purchase. Additionally, we offer a 60-day money-back guarantee, allowing you to explore the Aspri’s unique sound with complete assurance.
If your query isn’t covered here, don’t worry! We’re here to help. Please visit our Contact page for personalized assistance. We’re committed to answering all your questions and ensuring a great experience with the Aspri.

