Wireless Audio Gateway

JK Audio BlueKeeper Front

No Phone Line? Not a Problem.

BlueKeeper pairs to your cell phone like a Bluetooth wireless headset. Simply connect your favorite microphone and headphones and enjoy an immediate improvement at both ends of the call. The professional microphone preamplifier provides a dramatic improvement in sound quality to the caller or back to the station if you are away from the studio.

Learn More Details Specs

Product Details

Features BH BK
Excellent Separation of Caller and Talent Voice
16-bit DSP technology
Bluetooth Wireless Technology
Auto-Answer (Switchable On/Off)
Proprietary Auto Null Algorithm (50 dB null)
Send XLR Line Input
Mic/Line Switch
3.5 mm Mono Line Input
3.5 mm Stereo Line Input
Caller XLR Line Output
3.5 mm Stereo Line Output
3.5 mm Mono Mic Level Output
3.5 mm Headphone Jack
Send and Caller Signal Level LEDs
Send and Caller Volume Controls
Guest Module Remote Jack
Made in America
Approved for Sale in Europe and Australia

Recording Interviews

BlueKeeper allows you to send mic and line level signals into your wireless phone while maintaining excellent separation between your voice and the caller. The stereo output jack on the back of the unit provides your voice on one channel (in full fidelity) and the caller’s voice on the other channel. Connect this jack to your sound card or recorder. It’s perfect for radio or podcast interview recordings. The balanced XLR output jack contains only the caller’s voice. Connect to your mixing console or even to a PA system for everyone to hear.


The 3.5 mm stereo line input jack allows recordings to be sent into your Bluetooth device. The 3.5 mm stereo line output jack provides your full bandwidth send mix on the left channel and Bluetooth caller audio on the right channel. The headphone output gives you a mix of the XLR input, 3.5 mm input, and Bluetooth audio. This same overall mix is also provided on a 3.5 mm mono mic level output jack.

JK Audio BlueKeeper Back


Send 1 Balanced Female XLR
Impedance 1k ohms
Level 15 mV RMS (-34 dBu nom)
Send 2 1/8" (3.5mm) Stereo
Impedance 20k ohms
Level 250 mV RMS (-10 dBu nom, +6 dBu max)
Caller Out Balanced Male XLR
Impedance 200 ohms
Level 500 mV RMS (-4 dBu nom, +14 dBu max)
Caller Only
Mono Out 1/8" (3.5mm)
Impedance 50 ohms
Level 15 mV RMS (-34 dBu nom)
Mixed Send and Caller
Stereo Out 1/8" (3.5mm)
Impedance 50 ohms
Level 250 mV RMS (-10 dBu nom, +6 dBu max)
Left = Send, Right = Caller
Headphone 1/8" (3.5mm)
Impedance 8 ohms
Level 1/2 watt per channel
Mixed Send and Caller
Bluetooth Wireless Technology
Standard Bluetooth 3.0
Distance 66 ft (20 m)
Frequency Response Hands-Free (Full Duplex): 300 Hz– 3.4 kHz
Hands-Free (Full Duplex HD): 50 Hz– 7 kHz
Isolation 1500 VAC
Power 120-240 VAC Power Supply
Size 7" x 6" x 1.6" (18 x 15 x 4.2 cm)
Weight 2.2 lbs. (1kg)
*HD Voice: While standard phone calls have a narrow bandwidth of 300 Hz to 3.4 kHz, HD Voice calls offer 50 Hz to 7 kHz bandwidth. The additional 1.5 octaves on the low end gives voice a more natural sound, while the additional upper octave dramatically improves speech clarity and intelligibility.

*Wireless HD Calls: To take advantage of this extended bandwidth, both phones on the call must support HD Voice, and both phones must be on the same carrier, in coverage areas that support HD Voice.