GIK Acoustics Monster Bass Trap with FlexRange Technology

GIK Acoustics

Monster Bass Trap with FlexRange Technology

Introduced 2013$154 MSRP

The Monster Bass Trap with FlexRange Technology is GIK Acoustics' flagship, lab-verified bass trap, described by the company as "the best bass trap" and its most effective panel for clarifying low end and cleaning up room modes in mixing, mastering, and high-end listening rooms (source: https://gikacoustics.net/product/gik-acoustics-monster-bass-trap-flexrange-technology/). It uses a patented two-frame construction with a rigid rock-mineral-wool core and a built-in air gap, and is available with an optional Range Limiter membrane that boosts low-frequency absorption below 60 Hz while preserving high-frequency energy above 400 Hz (source: https://gikacoustics.net/product/gik-acoustics-monster-bass-trap-flexrange-technology/).

MSRP

$154

Used market · Good

$165

+7% vs MSRP
as of Sep 1, 2026

MSRP to used market

From $154 at launch to $165 today.

Specifications

Price
From approximately €201 for a 60×120 cm base module; larger/optioned configurations cost more
Mounting
Wall-flush mounting via rear wire system, corner placement, ceiling cloud, or freestanding on tripod/wooden/metal stands
Materials
Rigid rock mineral wool core, patented two-frame system, formaldehyde-free/low-VOC bonding, Camira Cara fabric wrap, Class A fire rated
Product type
FlexRange® broadband bass trap panel, rated GIK's most effective/flagship bass trap
Standard sizes
Square 600×600 mm; Rectangle 600×1200 mm; Narrow 300×1200 mm; custom sizes available
Panel thickness
167 mm
Rated absorption
24 Sabins per unit; stated to be 50% more effective than GIK's standard 244 Bass Trap with FlexRange Technology
Optional diffusion
One-dimensional diffusion between 2.5 kHz and 10 kHz
Frequency options tuning
FlexRange® tuning down to 50 Hz, with 90 Hz / 70 Hz / 50 Hz depth options
Range limiter performance
Absorbs up to 50% more low frequency below 60 Hz and retains 75% more high-frequency energy above 400 Hz versus the Full Range (no-membrane) configuration

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