Innkeeper 1rx Digital Hybrid

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Innkeeper 1rx Digital Hybrid


The innkeeper 1rx gets audio in and out of analog telephone lines. Its excellent caller audio output does not exhibit the transmit/receive crosstalk common to analog hybrids. This makes innkeeper 1rx perfect for radio or television talk shows, teleconferencing, or auto-answer IFB feeds. The main function of any hybrid is to bring in the caller’s voice from the phone line, as clear and clean as possible. In the real world, when you send your voice down the telephone line it has a tendency to bleed over into the caller’s audio. The hybrid must adapt to the phone line in order to properly separate transmit and receive audio. We use a 16-bit DSP to monitor the phone line and audio signals continuously in order to deliver excellent separation. Our dual-convergence echo canceller algorithm can achieve excellent transhybrid loss, typically exceeding 50 dB, without any setup and without sending a burst of noise into the phone line.


Automatic Gain Control (AGC)

Adjusts the caller volume to an average level. AGC will tame a loud caller, and boost a quiet caller or quiet long distance connection.

Caller Ducking

Drops the Caller output level by 9 dB whenever the host speaks. This keeps the host “in charge” of the show, automatically making sure the caller never overpowers the host by attempting to talk over the host’s voice.


Press the “Presence” button to get a richer sound from the caller’s voice. This digital filter brings back some of the low-end lost in transmission.

Talk Show

For Talk Show applications combine innkeeper 1x/1rx with the Concierge 2×6 Switch Core and a Guest Module Control Surface.




Comparisoninnkeeper 1rxinnkeeper 2innkeeper 4
Excellent Separation of Caller and Talent Voice
16-bit DSP technology
Auto-Answer (Switchable On/Off)
Proprietary Auto Null Algorithm (50 dB null)
Conferencing - -
AGC, Ducking, Presence - -
1 kHz Tone Generator
Memory Speed Dial -
Alpha-Numeric Keypad with Backlit LCD Display -
Send XLR Line Input124
Mic/Line Switch - -
Master Send XLR -
Caller XLR Line Output124
Mix Out XLR Line Output - -
Front Panel 1/4" Headphone Jack - -
Monitor Handset Jacks -24
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



SendBalanced Female XLR
Impedance1k ohms
Level15 mV RMS (-34 dBu nom)
Mic/Line Pad Switch+6 dBu max
Caller OutMale XLR
Impedance200 ohms
Level500 mV RMS (-4 dBu nom, +14 dBu max)
Stereo Headphone1/8" (3.5mm)
Impedance8 ohms
Level250 mW per channel
SpeakerScrew Terminals
Impedance8 ohms
Level1 watt
Phone Line ConnectorRJ11C
Aux Phone ConnectorRJ11C
Ringer0.8B REN
Isolation1500 VAC
Frquency ResponseTelephone Side 200 Hz-3600 Hz
Power120-240 VAC Power Supply (Internal)
Size1.75” x 7.3” x 19” (4.5 x 18.6 x 48.3 cm)
Weight5.7 lbs (2.6 kg)