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GRAMMA Sound Isolation Riser - Acoustic sound isolation

These patented isolation platforms feature an Ozite® covering over an inert structural layer that floats on 2” strips of acclaimed Auralex® Platfoam™.

These carefully engineered solutions allows the true sound of your amp to come through by negating resonance artifacts.


Product Information

AmpDude Amp Isolation Riser - Acoustic sound isolation

15" long x 15" wide x 3" high
Weight Limit: 200lbs.

The Auralex® AmpDude™ Amplifier Isolation platform is a smaller version of our classic GRAMMA®, which is trusted by chart- topping recording artists on-stage and in the studio. The AmpDude is designed for compact guitar, bass and keyboard amplifiers.

GRAMMA Sound Isolation Riser - Acoustic sound isolation

23" long x 15" wide x 2.75" high
Weight Limit: 300lbs.

The GRAMMA (Gig and Recording, Amp and Monitor, Modulation Attenuator) is an incredibly effective patented device that's used to float an amp or loudspeaker.

GRAMMA yields nearly total acoustic isolation, resulting in a purity of tone that has to be heard to be believed!

30" long x 19" wide x 2.75" high
Weight Limit: 300lbs.

Built on the success of GRAMMA, the Great GRAMMA is almost 30% bigger to float large speaker cabinets.

Now 4x12s, 15" or 18" speaker cabinets will benefit from the awesome Great GRAMMA.

Only Great GRAMMA can handle the big rigs!

GRAMMA and Great GRAMMA both come complete with a carrying handle, road-ready carpet, Studiofoam Wedges (underneath) and PlatFoam (underneath).

These manufacturers appreciate Auralex Total Sound Control benefits.

Sound Samples
  Customer Quotes

  Customer Quotes

"The GRAMMA is truly amazing! I used it with one of my Fender Black Face Twin Reverbs and it gave my amp a whole BRAND new sound! For the first time my amp sounded ALIVE with a lot of sparkle and punch! I am a tone freak and I am hearing GREAT tones for the first time coming out of my Twin Reverb, it's a total night and day difference! I can finally feel and hear the amp breathe the way that it was intended too. I am going to use the GRAMMAs on all my amps from now on (In the studio and LIVE on the stage). My Marshalls and Fender amps are finally going to sound GREAT! I am in TONE heaven! Very Happy!"
Eric Mantel -

"Auralex products are unchallenged both live and in the studio. I love Auralex's new GRAMMA. On stage it really smooths all my guitar tones. In clubs, theaters and even outdoors, the GRAMMA really makes a huge difference…The production crew of Tower of Power was so impressed, they started using them underneath the horn section monitors, the keyboardist's LESLIE® speaker and several drum mics…FANTASTIC results all the way around."
Jeff Tamelier - Guitarist, Tower of Power

"Having placed the brilliant Velodyne CHT-10 atop this cool looking device (the GRAMMA), I started my listening tests. BLOODY HELL!!!!!!!! POW!!!!! Suddenly, the lower octaves including mid bass took on a clarity and roundness I've not heard before. Tight bass took on a new meaning. I really feel like I'm onto something here. They are simply incredible."
Eric Salih - Cinema Experience (owner)

"Thanks to the good people at Auralex I can finally project my personal tone to the far reaches of the nightclub or the last seat in the theatre. My sound has definition, warmth and a boldness I couldn't get before. It's my sound but now it leaps off the stage and cuts through the house! Thanks Auralex."
Tad Robinson - Delmark Records, Blues Harmonica

  Application Photos

  Application Photos

GRAMMA Sound Isolation Riser - Acoustic sound isolation products from Auralex Acoustics - application photo #1 GRAMMA under a Rivera Combo amp.
GRAMMA Sound Isolation Riser - Acoustic sound isolation products from Auralex Acoustics - application photo #2 Great GRAMMA under an Ampeg SVT and 4x10 cabinet.
GRAMMA Sound Isolation Riser - Acoustic sound isolation products from Auralex Acoustics - application photo #3 GRAMMA under a JBL Stage Monitor

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