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Behringer BT251-BK Bluetooth Wireless Adaptor for In-Ear Monitors w/ MMCX Connectors

IN STOCK - Ships today if ordered before 1pm AEST

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Product Information

BT251-BK – Premium Wireless Cable for In-Ear Monitor

You deserve a high-quality in-ear monitor cable that delivers transparent sound with an ultra-wide dynamic range. Our BT251-BK Bluetooth wireless adapter cable for in-ear monitoring fulfills your needs at a price that is very kind to every budget!

Unparalleled Comfort

Secure over-the-ear and ultra-lightweight design of the BT251-BK allows you to keep them on for extended studio, chat, or gaming sessions without any feel of weight over your head. Rotating MMCX connections provide perfect fitment for all ears with lasting comfort.

Ultra-Long Life Battery Backup

When fully charged, your BT251-BK provides up to 7 hours of music playback. They come with high-quality USB charging cable for quick charge on the go. A low battery voice prompt is also built in for convenience.

Low Latency Technology

The BT251-BK comes with a built-in aptX™ audio codec from Qualcomm* for ultra-low latency that enhances movie watching and gaming experiences.

Compatible with Behringer In-Ear Monitors

The BT251-BK comes with universal 360-degree rotating gold-plated MMCX lock-snap connectors, providing versatile connectivity options for compatible earpieces. The adapter is fully compatible with Behringer SD251-CL and SD251-CK earbuds.

Music & More

BT251-BK’s outstanding performance goes far beyond its high quality, with features that include automatic pairing with your phone or any Bluetooth* playback device, convenient multi-function button controls for power, pairing, play, stop, skip, call answering, and much more. Your BT251-BK will become your new favorite go-to device for your life on the go!

Extraordinary Value

High-quality Behringer zipper carry case with metal clip is included for extra convenience and portability. Visit your local authorized dealer today and see just how easy and affordable it is to hop on the BT251-BK bandwagon – or get yours online.

  • Professional studio-grade Bluetooth* adapter for in-ear monitors

  • Bluetooth* technology for exceptional sound quality with up to 33 ft (10 m) of wireless freedom

  • Bluetooth* communication support for seamless phone calls and effortless music control

  • Enjoy up to 5 hours of battery life for non-stop listening pleasure

  • Compatible with most earphones and headphones containing MMCX connectors

  • 360-degree rotating gold-plated MMCX lock-snap connector for convenience and flexibility

  • Advanced DSP for optimized sound quality from a wide range of audio devices



Version 5.0

Frequency range

2402 MHz ~ 2480 MHz

Channel number


Max output power

5 dBm

Bluetooth range

Up to 10 m (33 ft) in line of sight

CODEC support

aptX, AAC, SBC

Call support

CVC 8.0

Mic sensitivity

-42 dB (±3 dB) @ 1 kHz, 0 dB = 1 V/Pa

Battery type

Rechargeable lithium battery

Working time

Up to 7 hrs

Standby time

Up to 150 hrs

Charging time

1 hr via USB 5 V / 500 mA


Shielded, detachable


MMCX connector, detachable

Cable length

25 cm (10")


3 Years Warranty

Shipping & Delivery

All orders over $100 will be automatically eligible for FREE Shipping Australia Wide, if you order is under $100 there will be a flat rate of $10.

Belfield Music is well known for its top online customer service. We treat all online customers with the same excellent service we give to our in store customer. We will ensure that you receive all the support you need while your goods are in transit and ensure the goods arrive promptly. All of our shipments have tracking numbers available and we cover every single unit by our own shipping insurance.     

Online orders are normally processed within 1-3 business days. Once processed, your order should take between 1-8 business days to arrive depending on your location. Please note that your order may take up to 10 business days to arrive from the day you place your order. 

If it transpires that the product is out of stock due to a stock discrepancy and/or there will be a delay in shipment, we will contact you within 2 business days of placing your order and give you the option of waiting or cancelling your order. The products we advertise online should show if they are in stock or not. We do our best to keep the website stock count up to date, but there may be an occasional error.

If you wish to utilize an Express Delivery Service to receive your item, please contact us for a shipping quote before you place your order at admin@belfieldmusic.com.au or by using the Chat icon on the bottom right of the page.           

Deliver is made during the hours from 8:00am till 5:30pm Monday to Friday. As such, please ensure you nominate an address which is capable of receiving goods during 8am and 5.30pm.  Given the restrictions on PO Box deliveries we cannot deliver larger sized items to a PO Box.

If for any reason our selected carriers don't service your area we will contact you before processing your order if this applys to you.

Returns Policy

If you wish to return an item which is not damaged or faulty in any way and you have simply changed your mind or made the wrong decision, you must let us know within 7 days of receiving the item.  We will not agree to refund an item because you simply changed your mind or made the wrong decision if we have not been advised of your intention within 7 days of receiving your item. Once we have provided a return authority, it is the buyer’s responsibility to return the item, at their own costs within 30 days from original purchase. If the item is returned with any damage or alteration to its original packaging, we will refund the item subject to applying a minimum 15% restocking fee.  We will not refund the costs of the initial shipping charges.

It is in Belfield Music best interests to keep our customers happy with their purchases. If you are not happy with your purchase, please talk to us first. We will always attempt to resolve any problems you may have as best we can. To contact us please email us at admin@belfieldmusic.com.au or by using the Chat icon on the bottom right of the page.