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JK Audio innkeeper 4

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Multi-Line Digital Hybrid

Innkeeper 4 squeezes four independent digital hybrids in a 1U rack space.

SKU: innkeeper 4 Categories: , ,


Innkeeper 4 squeezes four independent digital hybrids in a 1U rack space. The front panel keypad, display, and handset jacks provide easy speed dialing and call setup. Digital hybrids allow you to send signals into the phone line while maintaining excellent separation between your voice and the caller. The balanced XLR output jacks contain only the caller’s voice.

Digital hybrids connect audio signals to standard analog telephone lines without the transmit / receive crosstalk common to analog hybrids. The Digital Signal Processor (DSP) continuously monitors both the phone line and audio signals to deliver excellent separation. This proprietary, dual-convergence echo canceller algorithm can achieve excellent separation, typically exceeding 50 dB, without any setup and without sending a noise burst down the line.

The menu driven keypad and back lit display allow you to store 50 phone numbers by name in a phone list. You can also use the display to set features such as the number of rings before auto answer, master send channel selection, and test tone output. An auxiliary telephone jack is provided for each line. The auxiliary telephone is disconnected when you press the “Call” button, and reconnected when you press the “Drop” button.

Innkeeper 4 features Auto-Answer/Auto Disconnect for use in IFB and monitoring applications. Other applications include: telephone interviews, talk shows, church PA interface, and conference room full duplex applications.

Additional information

Weight 3.2658 kg
Product can be split into multiple boxes




Ship Separately




Line Input:
(5) Balanced Female XLR, 20k ohms, 500 mV RMS (-4dBu) nom. +10 dBu max

Line Output:
(4) Balanced male XLR, 200 ohms 500 mV RMS (-4dBu) nom. +10 dBu max

Front panel handset jacks biased for electret handset (not included)

Phone Line:
(4) RJ11C

Aux Phone:
(4) RJ11C

1500 VAC

0.5B REN

Frequency Response:
Telephone Side 200 Hz – 3600 Hz

120-240 VAC power supply (included).

19” x 7.3” x 1.75” (26.7 x 18.6 x 4.5 cm)

7.2 pounds


Excellent separation of send and receive audio
Memory / Speed Dial from phone list
16 bit DSP technology
Proprietary auto null algorithm, 50 dB null
XLR line input, one per line
XLR master input sends audio to selected lines
XLR caller output, one per line
Send & Receive level LED
Remote control and LED status indication
Monitor Handset Jacks
Auto answer/disconnect
Made in USA




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STUDIO Telephone Interfaces JK Audio innkeeper 4