Real Reverb, Unplugged: Clip On & Play
Invented in 1968. Redesigned for today.
⚡ Zero power: no batteries, no cables
⏱️ Zero setup: Clip-on in seconds, play anywhere
🎵 Real reverb from your guitar: no simulation
Bring your acoustic to life naturally
Feel the warmth and depth you’ve been missing when you play unplugged.
ASPRI mixes your guitar’s vibrations with its physical reverb tank while preserving your natural tone.
Chords feel deeper, melodies linger… you’ll want to play longer.
Hear it now: dry vs ASPRI
Press Play to hear your guitar dry. Then tap WITH ASPRI to compare. You can switch anytime. Best with headphones.
Bossa Nova Demo
Strum and Guitar Tap Demo
Strumming Demo
Digital simulates. ASPRI resonates.
Other systems rely on electronics or installation. ASPRI gives you real, natural reverb.
| FEATURE | ASPRI CLIP‑ON REVERB | OTHER REVERBS |
|---|---|---|
|
Fits most 6‑string acoustics |
✅ Best with straight (non-compensated) saddles; no split saddles | ❌ Requires a pickup or electro-acoustic guitar |
|
Needs no power |
✅ No batteries, no cables; works with or without a pickup | ❌ Batteries and cables required |
|
Ready fast |
✅ Clip on in ~10 seconds and play | ❌ Setup, tools, and/or installation required |
|
Pure, natural reverb |
✅ Physical tank → warm, immersive true resonance | ❌ Digital emulation → artificial, simulated effect |
|
Unplugged vs amped |
✅ Same lush reverb whether unplugged or plugged to an amp | ❌ No reverb if unplugged and/or without a pickup |
|
Ultra portable |
✅ Only weighs 263 g / 9.3 oz; fits any gig-bag | ❌ Extra gear required (batteries, cables, and more) |
|
Zero upkeep |
✅ Nothing to maintain, ever. Premium materials; made in Canada 🍁 | ❌ Replacement batteries, cables, software updates |
|
60‑day money‑back |
✅ Love it or return it, no risk + 5-year warranty | ❌ Typical 30-day/1-year warranty |
Loved by world-renowned artists
“I’m stunned! It’s so simple, and so genius and subtle at the same time!”
“Where has this thing been all my life. Instant inspiration guys!”
“I felt an immediate inspiration and wanted to play more.”
“The best analog spring reverb I have heard in a long time & best of all I can bring it with me anywhere!”
The original, reinvented
Before ASPRI, guitarists chased reverb in stairwells and cathedrals.
In 1968, Roberto Aspri invented the first unplugged, clip-on reverb — bringing natural resonance from the guitar itself.
Today, he rebuilt his original idea with modern precision: lighter, simpler, tougher — still proudly made in Canada.
- Born for classical & flamenco — now embraced across styles
- No special spaces or effects needed — the reverb lives in your guitar
- Still designed by Roberto Aspri — 50+ years on
Turn any space into your stage
ASPRI transforms your guitar into its own concert hall — feedback-free, unplugged or amped.
🎒 Easy to carry: 263 g (9.3 oz) — slips into any gig bag
🔁 Swap fast: switch between guitars in seconds
🌍 Play anywhere: home, outdoors, studio, or on stage — same inspiring feel
“Completely real, live reverb… I had a ton of fun checking this out.”
50+ years of inspiring guitarists worldwide
“I just bought an ASPRI UNIT – used it on my Blueridge acoustic guitar and… I could hear “heaven”… Thanks a lot for changing my musical life!”
“The ASPRI is a great accessory! I was very pleased with how dramatically it improved the tonal response and volume of my Yamaha FG-400A. Made a dull guitar sound super! Highly recommended.”
“I am VERY impressed with the new version. It sounds great; the effect is very smooth… Bottom line: this is not a toy, and does exactly what it is supposed to do.”
“I absolutely love it! The reverb sound is better than ever… It sounds absolutely magical!”
Got questions? We’re happy to help.
What is the ASPRI Clip-On Reverb?
The ASPRI Clip-On Reverb is the world’s most natural reverb for acoustic and classical guitars. It works perfectly on all six-strings with a straight, non-compensated saddle. It was originally introduced by inventor Roberto Aspri in 1968, and perfected over the years, into the amazing, lush reverb device that has inspired countless musicians.
Does it need batteries or installation?
No. Just clip it on: no power, cables, or modifications needed.
Will it fit my guitar?
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.
Will it damage my guitar?
ASPRI uses soft, mark-free pads to protect your instrument. If attached gently following the guide, it won’t cause scratches or marks. Just avoid forcing it; gentle mounting is key.
Will it make my guitar louder?
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.
Can I control the reverb?
ASPRI naturally responds to your playing for perfect balance.
Love your sound or return it
Try ASPRI for 60 days. If it doesn’t inspire you, send it back for a full refund, no questions asked. Every unit includes a 5 year warranty.
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The World’s First Unplugged Reverb
Since 1968. Made in Montreal, Canada 🍁
