Monster · Portable speakers
Monster MT-BBS04 Street Boombox Speaker
The Monster MT-BBS04 Street Boombox is a rechargeable speaker with a carry strap and several playback options. Its two 30 W outputs and internal 4,000 mAh, 11.1 V battery provide supported audio away from a fixed mains socket between charges.
Useful features
At a glanceBluetooth playback
Bluetooth playback: accepts audio from a compatible wireless source.
AUX, USB and microSD inputs
AUX, USB and microSD inputs: provide the alternative playback routes.
Two-speaker linking
Two-speaker linking: requires another matching MT-BBS04 for the paired arrangement.
Microphone input
Microphone input: supports a separate compatible wired microphone alongside another playback source.
Indoor and outdoor EQ modes
Indoor and outdoor EQ modes: provide the sound-setting choices.
Two 30 W outputs
Two 30 W outputs: the manufacturer's stated rating
4,000 mAh, 11.1 V battery
4,000 mAh, 11.1 V battery: identifies the internal rechargeable power source.
USB-C charging
USB-C charging: has a 30 W maximum input; charging time varies with the supply.
Carry strap included
Carry strap included: assists transport of the 3.6 kg speaker.
AUX and USB-C leads included
AUX and USB-C leads included: provide the stated wired-audio and charging leads alongside the speaker and user material.
- Colour · Black
The useful features
- Bluetooth playback: accepts audio from a compatible wireless source.
- AUX, USB and microSD inputs: provide the alternative playback routes.
- Two-speaker linking: requires another matching MT-BBS04 for the paired arrangement.
- Microphone input: supports a separate compatible wired microphone alongside another playback source.
- Indoor and outdoor EQ modes: provide the sound-setting choices.
- Two 30 W outputs: the manufacturer's stated rating
- 4,000 mAh, 11.1 V battery: identifies the internal rechargeable power source.
- USB-C charging: has a 30 W maximum input; charging time varies with the supply.
- Carry strap included: assists transport of the 3.6 kg speaker.
- AUX and USB-C leads included: provide the stated wired-audio and charging leads alongside the speaker and user material.
- Colour · Black
The useful details
Know what
you’re getting.
The Monster MT-BBS04 Street Boombox is a rechargeable speaker with a carry strap and several playback options. Its two 30 W outputs and internal 4,000 mAh, 11.1 V battery provide supported audio away from a fixed mains socket between charges.
Bluetooth connects a compatible wireless source. The auxiliary input accepts the supplied AUX lead, while USB and microSD inputs provide alternative media playback. A separately supplied wired microphone can be used while another source plays. Two matching MT-BBS04 speakers can link for simultaneous playback. Indoor and outdoor equaliser modes provide different sound settings.
USB-C charging has a 30 W maximum input. A suitable USB-C PD supply above 30 W is recommended for the stated 2.5–3-hour charging time; a 10 W supply is described as taking 7.5–8 hours. Actual time depends on battery state and supply conditions.
The package includes the 3.6 kg speaker, carry strap, auxiliary and USB-C leads and user material. Playback needs a suitable audio source or compatible local media. The IP66 rating defines the stated protection level, rather than permitting immersion; follow the supplied guidance around water and ports.
Plays audio from Bluetooth, AUX, USB storage or microSD and accepts a separately purchased wired microphone.
Portable listening and sing-along audio.
Users seeking a portable speaker with wired, wireless and removable-media inputs.
Charge the speaker with a suitable USB-C supply, then select Bluetooth, AUX, USB or microSD playback as supported by the exact manual. Optional wired microphone use and two-speaker linking need compatible equipment.
A closer look
Specifications.
The details that matter.
Specifications
Colour: Black
What’s in the box
Street Boombox speaker
Carry strap
USB-C cable
AUX cable
User manual
Warranty certificate
General safety warnings
Compatibility
A second matching speaker is required for TWS. Microphone and mains charger are not included.
Use and product notes
Two MT-BBS04 speakers can link for simultaneous playback. 2 × 30 W output and a 4000 mAh, 11.1 V lithium-ion battery.
Follow the separate general safety warnings supplied with the product
A second matching speaker is required for TWS. Microphone and mains charger are not included.
Actual charging varies with battery state, supply and conditions; a mains charger is not in the box. The microphone input can support sing-along use with a separate suitable microphone. IP66 is listed, while its port-cover conditions are not detailed in the manual, so care around water still requires the product instructions.
Suitable USB-C power supply; optional microphone and second MT-BBS04 speaker; compatible source device or media.
3.6 kg
394 × 166 × 231 mm; axes not labelled
USB power input: 5/9/12/15/20 V DC; 30 W maximum