innkeeper LTD

Digital Auto-Answer Hybrid
JK Audio innkeeper LTD Front

Our Simplest Digital Hybrid.

Plain and simple may be the best words to describe the new innkeeper LTD Digital Hybrid. innkeeper LTD allows you to send line level signals into the phone line while maintaining excellent separation between your voice and the caller. The balanced XLR output jack contains only the caller’s voice, making this the perfect companion to mixers, consoles, and PA systems that demand talk show quality audio from a phone line.

Learn More Details Specs

Product Details

Features AH LTD
Enable/Disable Auto-Answer
Excellent Separation of Caller and Talent Voice
16-bit DSP technology
Hybrid Null Adjust (Up to 20 dB Separation)
Proprietary Auto Null Algorithm (50 dB null)
Front Panel Off-Hook LED
Send XLR Line Input
Caller XLR Line Output
Send and Caller Signal Level LEDs
Remote Control Terminals
Guest Module 1 Remote Control Jack
Rack Mountable
Passive Design (No Battery or AC Required)
Made in America
Approved for Sale in Europe and Australia
JK Audio RA2

Rack Panel

This small desktop unit easily converts to a rack-mount unit using the optional RA2 Rack Panel. The RA2 holds 2 innkeeper LTDs in a 1U rack space.

Why a Digital Hybrid?

The digital hybrid connects audio signals to a standard analog telephone line without the transmit / receive crosstalk common to analog hybrids. Its 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. While this may sound complicated, it’s all done automatically during every call.


An auxiliary telephone is only required to place outgoing calls. The auxiliary telephone is disconnected when you press the “Call” button, and reconnected when you press the “Drop” button. The “Remote” jack allows connection to a JK Audio Guest Module, allowing remote control and dialing without an auxiliary telephone.


Innkeeper LTD 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. This simple design features recessed volume controls and no confusing DIP switches, yet works reliably on standard analog phone lines around the world.

JK Audio innkeeper LTD Back


Send Balanced Female XLR
Impedance 20k ohms
Level 500 mV RMS (-4 dBu nom) +12 dBu max
Caller Balanced Male XLR
Impedance 200 ohms
Level 500 mV RMS (-4 dBu nom, +14 dBu max)
Phone Line RJ11C
Aux Phone RJ11C
Isolation 1500 VAC
Ringer 0.8B REN
Frequency Response Telephone Side 200 Hz - 3600 Hz
Power 120-240 VAC Power Supply (included)
Size 7.6” x 5.3” x 1.5” (20 x 14 x 4 cm)
Weight 2.7 lbs (1.2 kg)