Bose Acoustimass 300 Wireless Bass Module Subwoofer Black Tested Free

Upgrade your home theater with the Bose Acoustimass 300 Bass Module—designed to deliver powerful, distortion-free bass that you can feel, not just hear. This premium subwoofer pairs wirelessly with compatible Bose soundbars for a clean, minimalist setup without sacrificing performance.

The Acoustimass 300 features dual opposing drivers and QuietPort™ technology, producing deep, cinematic lows while minimizing vibration and distortion. Its sleek tempered-glass top and compact footprint allow it to blend seamlessly into modern living spaces.

This unit has been fully tested and confirmed working. Light cosmetic wear may be present from normal use (see photos), but it performs exactly as intended.

*Note - The Acoustimass 300 is the original version of the Bass Module 700 and is acoustically and electronically identical. Bose later rebranded this model to align with the Soundbar 700 naming.

✔ Designed for use with Bose Soundbar 700, Soundbar 500, SoundTouch 300, and select Bose Lifestyle systems
✘ Not compatible with non-Bose systems or older Bose systems lacking wireless bass module support

Free shipping via UPS Ground within the continental U.S.

30-day returns accepted for peace of mind.

Model: Bose Acoustimass 300 Bass Module
Type: Wireless Active Subwoofer
Drivers: Dual opposing drivers
Wireless Connectivity: Yes (Bose proprietary wireless link)
Ports: Power input only (no wired audio input)
Frequency Response: Engineered for deep low-frequency extension (Bose-tuned)
Design: Tempered glass top, vibration-reducing cabinet
Color: Black
Placement: Floor-standing
Dimensions: Approx. 15.8" H × 11.6" W × 11.6" D
Weight: Approx. 29 lbs
Power: AC powered
Condition: Tested, fully functional
Included: Bass module only (no original box unless shown)