Crafted with Precision for Resonance That Inspires

ASPRI enriches your instrument with natural analog resonance that responds to your touch and adds depth that inspires.

Pure Acoustic Resonance

Shapes your guitar’s natural tone into an expressive acoustic space with depth and bloom that respond to your touch.

Precision Spring Engine

Hand calibrated springs translate nuance into motion, creating refined echoes and decay that enhance presence and warmth.

StringDrive Source Capture Technology

Captures vibration at its most expressive point so articulation and dynamics flow naturally through the resonance.

External Resonance Design

Your guitar amplifies and blends the resonance through its own body, keeping the effect organic, cohesive, and true to the instrument’s voice.

ASPRI unlocks something rare.
Why ASPRI

ASPRI unlocks something rare.

  1. 1

    A More Expansive Voice That Inspires

    ASPRI enriches your guitar with depth and bloom that feel rewarding to play and unmistakable to hear, offering a fuller voice that remains true to the instrument.

  2. 2

    Expression That Responds With Emotional Clarity

    Nuance gains dimension. Dynamics translate into space. Your playing feels more alive, and listeners experience that same immediacy and intent.

  3. 3

    Better Connection Between Player and Audience

    Resonance follows your articulation in real time, giving each phrase clarity and presence. You hear a more compelling version of your own voice.

  4. 4

    An Acoustic Atmosphere That Elevates Every Performance

    ASPRI creates a natural sense of space that integrates with the guitar, adding warmth and dimension that inspire your playing and deepen the listener’s experience.

What is ASPRI?

ASPRI combines patented design, precise-calibrated spring resonance with StringDrive source capture to augment your guitar’s natural vibration

This mechanical, fully analog system adds rich acoustic ambience without altering the instrument or introducing electronic coloration. Your guitar stays pure, responsive, and more expressive than ever.StringDrive captures the pure vibration at the source. It takes energy straight from the strings, then transfers that energy into an analog resonator. That resonator creates a natural pattern of echoes and decay that your ear hears as reverb plus delay.

Artists In Session

Hear how professionals and creators use ASPRI to elevate their acoustic sound.

Buzz

What the professionals have to say about ASPRI

Andy Grammer
Andy GrammerMulti-Plantinum Pop Artist & Songwriter

The ASPRI is awesome. It totally creates a mood for live performance. Love this thing!

Zakk Wylde
Zakk WyldeGuitar Legend & Founder of Black Label Society

LOVE MY ASPRI !! Great sounding, inspiring reverb. BAD-ASS little invention!

Mario Guini
Mario GuiniLead Guitar Player for Marc Anthony

Not only does it sound amazing, but it inspires and truely captivates you.

Vernon Reid
Vernon ReidGuitar Legend & Founder of Living Colour

ASPRI for acoustic guitar is a fantastic analog effect. No blutooth or batteries, just pure sound enhancement.

Brendan Benson
Brendan BensonSinger-songwriter, producer and co-founder of The Raconteurs

I’m stunned! It’s so simple, and so genius and subtle at the same time!

Chris Henderson
Chris HendersonLead guitar player for 3 Doors Down

Where has this thing been all my life. Instant inspiration guys!

Andy Vargas
Andy VargasLead singer for Santana

I felt an immediate inspiration and wanted to play more.

Jessica Lynn
Jessica LynnBillboard-charting singer-songwriter

This was amazing. Playing guitar felt like a whole new experience. The guitar sounded incredible.

Eren Cannata
Eren CannataSongwriter, producer, and co-owner of Cove City Sound Studios

The best analog reverb I have heard in a long time & best of all I can bring it with me anywhere!

Matthew & Gunnar Nelson
Matthew & Gunnar NelsonSinger-Songwriters and founders of the band Nelson

Our Aspris allow us to sound richer, fuller, and more inspired in even the most intimate and revealing venues. What a stroke of genius- a spring reverb on your acoustic guitar.

Billy Voight
Billy VoightGUITAR World Magazine

Completely real, live reverb… I had a ton of fun checking this out.

Experience the Resonance that Inspires

Discover the analog resonance system crafted for musicians.