470 mm wide
A larger format than the 420 mm-wide B51S.
EVERYDAY SERIES · BKK
BKK B51 Pro
The larger B51 option.
A larger 470 mm-wide format with RGB lighting, a carry handle and support for compatible microphones.
- 470 mm
- Larger format
- USB · TF · AUX
- Alongside Bluetooth
- Up to 2 mics
- Choose 0, 1 or 2 microphones
$330.00
Customer support and after-sales service are provided by Arden Audio.
Delivery & returns
WHY BKK B51 PRO
Choose the format that fits.
The same everyday-to-shared listening idea, in the larger B51 enclosure.
Flexible playback
Bluetooth, USB MP3, TF card or AUX.
Add one or two voices
Choose one or two matching microphones with your speaker and adjust Echo.
Choose the larger B51 format.
B51 Pro measures 470 mm wide, compared with 420 mm for B51S. The supplier lists two 4-inch drivers and two 45 mm tweeters for Pro. Choose this format if you want the larger enclosure and have room for its 470 × 179 × 265 mm dimensions.
A shared design. More ways to join in.
A carry handle and RGB lighting are part of the shared B51 design shown in this video. Choose the speaker-only option or add one or two matching microphones, with Echo adjustment for vocals.
Light up the shared moments.
The RGB light strip adds colour while your music plays. The built-in handle makes it practical to reposition the speaker around your home.
Keep your sources connected.
Stream from your phone over Bluetooth, play MP3 files from a USB drive or TF card, or connect a wired source through 3.5 mm AUX. USB-C is for charging, not a listed digital audio input.
PRODUCT INFORMATION
Technical details
Allow space for a 470 × 179 × 265 mm speaker. If a smaller enclosure is your priority, B51S is 420 mm wide. Shared B51 exterior footage is not an audio-performance or size comparison.
- Model
- B51 Pro
- Output power (supplier-listed)
- 150W; RMS / peak basis not specified
- Drivers
- 2 × 4-inch drivers + 2 × 45 mm tweeters
- Wireless connection
- Bluetooth
- Playback connections
- USB flash drive, TF card, 3.5 mm AUX
- Audio file format
- MP3
- Microphone options
- Speaker only, one matching microphone, or two matching microphones
- Additional functions
- Echo, TWS, RGB lighting, recording
- Charging input
- USB-C, 5V / 3A
- Battery capacity
- 8000mAh
- Dimensions (supplier listing)
- 470 × 179 × 265 mm
IN THE BOX
What comes with your speaker
USB-C and AUX cables are included. Matching microphones are included only with the selected one- or two-microphone bundle. A wall power adapter is not included.
- B51 Pro speaker
- USB-C 3A cable
- AUX cable
- User manual
SUPPORT · FAQ
Before you choose
Should I choose B51S or B51 Pro?
Choose B51S if you prefer the smaller 420 mm-wide format. Choose B51 Pro if you want the larger 470 mm-wide enclosure and its two 4-inch drivers with two 45 mm tweeters. Both support RGB lighting and compatible microphones.
Is a microphone included?
The speaker-only option does not include a microphone. Choose the one- or two-microphone bundle if you want matching microphones included with your order.
Can it play music without Bluetooth?
Yes. B51 Pro supports MP3 files from USB flash drives and TF cards, plus a wired source through the 3.5 mm AUX input.
Does 150W mean RMS output?
The supplied specification lists 150W output but does not identify an RMS or peak measurement basis. We do not describe this figure as 150W RMS.
Is a charger included?
A USB-C 3A cable is included. A wall power adapter is not listed in the standard package. The specified charging input is 5V / 3A.
Who provides customer support?
Arden Audio provides customer support and after-sales service for purchases through our store. Contact our team for help with setup or product questions.