innkeeper 4

Multi-Line Digital Hybrid
JK Audio innkeeper 4 Front

When a Single Line Hybrid Isn't Enough.

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. Its excellent caller audio output does not exhibit the transmit/receive crosstalk common to analog hybrids. This makes innkeeper 4 perfect for radio or television talk shows, teleconferencing, or auto-answer IFB feeds. 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.

Learn More Details Specs

Product Details

Features 1rx i2 i4
Excellent Separation of Caller and Talent Voice
16-bit DSP technology
Auto-Answer (Switchable On/Off)
Proprietary Auto Null Algorithm (50 dB null)
AGC, Ducking, Presence
1 kHz Tone Generator
Memory Speed Dial
Alpha-Numeric Keypad
with Backlit LCD Display
Send XLR Line Input 1 2 4
Mic/Line Switch
Master Send XLR
Caller XLR Line Output 1 2 4
Mix Out XLR Line Output
Front Panel 1/4" Headphone Jack
Monitor Handset Jacks 2 4
Remote Control via Screw Terminals or RS-232
RIU-IP Remote IP Interface
Monitor Speaker Terminals
Send and Caller Signal Level LEDs
Send and Caller Volume Controls
Made in America
Approved for Sale in Europe and Australia

Remote IP Interface

Control innkeeper 1rx, innkeeper 2 or innkeeper 4 remotely from a web browser. RIU-IP is sold separately. Learn More

Menu System

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.

Talk Show

For Talk Show applications combine innkeeper 4 with the Concierge 2x6 Switch Core and a Guest Module Control Surface.

JK Audio innkeeper 4 Back


Line Input Balanced Female XLR
Impedance 20k ohms
Level 500 mV RMS (-4 dBu nom, +10 dBu max)
Caller Out Balanced Male XLR
Impedance 200 ohms
Level 500 mV RMS (-4 dBu nom, +10 dBu max)
Handset Front panel handset jacks biased for electret handset (not included)
Phone Line Connector RJ11C
Aux Phone Connector RJ11C
Ringer 0.8B REN
Isolation 1500 VAC
Frequency Response Telephone Side 200 Hz-3600 Hz
Recommended Operating Temperature -20°C to +40°C
Power 120-240 VAC Power Supply (Internal)
Size 1.75” x 7.3” x 19” (4.5 x 18.6 x 48.3 cm)
Weight 7.2 lbs (3.2 kg)