ASPRI Clip-On Reverb is a fully mechanical, battery-free device that gives your acoustic guitar real, natural reverb. No electronics, no pickups, no installation.

It clips onto your guitar in seconds. When you play, your string vibrations pass into a built-in spring chamber inside the ASPRI, creating lush, organic echoes that resonate back through your guitar’s body and out of the sound hole. The result? A rich, concert-hall depth you can hear and feel, completely unplugged.

Unlike digital effects that simulate reverb, ASPRI delivers authentic acoustic resonance, so your guitar itself becomes the reverb source.

ASPRI uses real springs to transform your guitar’s natural vibrations into lush, analog reverb: no power, pickups, or installation required.

• It clips onto your guitar in seconds (no tools, no string removal)
• When you play, your string vibrations travel into the built-in reverb tank
• Steel springs inside the ASPRI tank generate warm, natural echoes
• The sound resonates directly out of your guitar’s sound hole, not from a speaker or amp
• You feel and hear the reverb as if your guitar itself came to life.

No. ASPRI requires no batteries, cables, pickups, or modifications. Just clip it on to instantly enhance your guitar’s natural sound.

No. ASPRI’s premium springs maintain consistent tension and optimal performance for decades. With proper care, your ASPRI will provide rich, authentic reverb indefinitely.

No. ASPRI is fully acoustic and unplugged. However, if your guitar has a pickup or is electro-acoustic, ASPRI’s natural reverb can be beautifully amplified through any amp or PA system.

ASPRI fits most nylon- and steel-string guitars. If the distance from your saddle to the bottom edge of the guitar (lower bout) is 216mm or less, you’re good. It’s not compatible with split or highly compensated saddles. Clips on/off in seconds, making it easy to switch guitars.

Our clear, easy-to-follow Clip-On Guide demonstrates the simple setup steps to achieve optimal sound instantly.

No. ASPRI is designed with soft, mark-free contact pads that gently grip your instrument without adhesives, magnets, or screws. When attached carefully following our Clip-On Guide, it won’t cause scratches, discoloration, or damage to your finish. We recommend always mounting and removing it gently to protect your guitar’s surface.

ASPRI shortens the string length by about 2mm, so we recommend a quick retune after attaching it for optimal tuning.

Not louder, just better. ASPRI isn’t an amplifier. It adds natural, immersive reverb for a fuller, more vibrant tone. You might lose a touch of volume, but what you gain is authentic, inspiring sound.

No adjustment needed. ASPRI responds naturally to your playing style, delivering a balanced reverb.

Today’s ASPRI has dedicated models for Nylon-string (classical/flamenco) and Steel-string guitars, an improved secure-clip design, buzz-free premium springs, and stylish matte or glossy finishes; offering greater ease of use, improved sound, and enhanced aesthetics.

It’s safe to leave ASPRI attached, but since it clips on and off easily, removing it takes just seconds.

No. At just 263 grams, ASPRI is lightweight, compact, and unobtrusive, ensuring comfort and complete freedom while playing.

We’d love to feature your music! Send your ASPRI reviews, videos, or photos to info@aspri.com or via our Contact page. You might be featured on our website or social media.

Interested in being featured? Please contact us through our Contact page with your music examples and details. We’ll gladly share more about our artist program.

Want to partner with ASPRI? Please send your company name, location, background, and approximate order quantities through our Contact page. We’ll get back to you promptly with next steps.