Shure SB904 GLXD+ Rechargeable Lithium-Ion Battery

Make every show a success with Shure GLX-D+ wireless. The SB904 GLX-D+ rechargeable lithium-ion battery is compatible with GLX-D+ transmitters and bodypacks.

GLX-D+ Dual Band Digital Wireless is the perfect solution for musicians and presenters who want to go wireless with confidence, and without complexity. Every aspect of its operation is managed automatically and with total reliability, allowing you to focus on your performance. With Dual Band Wireless Technology, GLX-D+ can operate in both 2.4 and 5.8GHz, more than doubling the available bandwidth while also intelligently avoiding interference for reliable, dropout-free audio. Featuring smart rechargeability with up to 12 hours of runtime (improved from prior generation GLX-D), the included lithium-ion battery can be charged multiple ways and offers quick charge capabilities.

Available with multiple legendary microphone options (including the SM58) in tabletop, half-rack and guitar pedal system configurations. When combined with Frequency Manager and directional antenna accessories (both sold separately), the rack-mount receiver systems are ideal for small and medium installations where a larger number of channels is needed.


- Tabletop GLXD+ Dual Band receiver + handheld system.
- Dual Frequency operation (2.4GHz and 5.8GHz).
- Very similar look and same features available in prior GLX-D version.
- Available with SM58, Beta58A and Beta87A capsules.
- Dual frequency band operation (2.4GHz and 5.8GHz).
- Battery now lasts ~12 hours (versus 11 in prior version).
- Brand and capsule names are now printed in Black (prior was white)

- System Type: 18” active vented subwoofer
- Power Rating: Class D 4000 W (Peak)
- Transducer Low: 18” Ferrite Woofer, 3” (76 mm) Voice Coil with Long Excursion
- Frequency Response (-6 dB): 40 Hz – 120 Hz
- Max SPL: 130 dB
- Crossover Frequency: 80 Hz / 100 Hz / 120 Hz Low Pass Filter
- Electronic Protections: Over Heat Protection / Short Circuit Protection / Digital Compressor
- Cooling: Temperature-Controlled fan
- Connectors:
- Input: Left Mono (Combo) / Right (Combo)
- Output: Left Mono (XLR) / Right (XLR)
- External Controls: Volume Control / Phase Switch / Switch for EQ Mode Selector / Switch for LPF / Power On With Green LED / Limiter With Red LED
- Power Supply: 100 V – 240 V (50 Hz / 60 Hz)
- Power Supply Consumption: 800 W
- Enclosure Construction: Plywood Cabinet, Black Paint, Metal Grille with Foam, Rubber Feet, Double Handles
- Mounting: One Standard Metal Pole-Mount
- Dimensions (W x H x D): 26.02” (661 mm) x 21.06” (535 mm) x 21.12” (536.5 mm)
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 0.21 lbs
Shipping Dimensions: 4 x 3 x 2 in
Manufacturer Part Number (MPN): SB904
Warehouse Resealed
Shipping Weight: 0.21 lbs
Shipping Dimensions: 4 x 3 x 2 in
Manufacturer Part Number (MPN): SB904

Consumer Alert

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC's wireless microphone website at

NOTE: None of the wireless systems we carry are capable of violating the FCC guidelines stated above. We are presenting this information as a matter of legally required disclosure.

For support or warranty questions, please contact the manufacturer:
Phone: 800-516-2525


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