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JK Audio AutoHybrid Auto-Answer Hybrid

Model: AUTO

JK Audio AutoHybrid Auto-Answer Hybrid
JK Audio AutoHybrid Auto-Answer Hybrid
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About: JK Audio AutoHybrid Auto-Answer Hybrid

The AutoHybrid is a simple, passive, auto-answer/disconnect telephone line hybrid that allows simultaneous send and receive audio through analog telephone lines. Suitable for monitoring remote locations, IFB feeds, and many simple studio, conferencing, and PA telephone interface applications.

Full Duplex

Yes, you can send and receive audio at the same time. The dual transformer hybrid is capable of 20 dB nominal trans-hybrid loss. In other words, your transmit signal will appear mixed with the receive signal, but at a level 20 dB lower than it was sent into the phone line.


The "Auto" feature is very simple. When the "Auto" switch is selected, AutoHybrid will answer on the first ring. The phone line will remain off-hook, until either the Drop button is depressed, or until the phone company releases the line.


  • Enable/Disable Auto-Answer
  • Hybrid Null Adjust (Up to 20 dB Separation)
  • Front Panel Off-Hook LED
  • Send XLR Line Input
  • Caller XLR Line Output
  • Remote Control Terminals
  • Rack Mountable
  • Passive Design (No Battery or AC Required)
  • Made in America


  • Input Female XLR
    • Impedance 1k ohms
    • Level 500 mV RMS (-4 dBu nom, +6 dBu max)
    • Insertion Loss 11dB Send XLR to Phone Line
  • Output Balanced Male XLR
    • Impedance 600 ohms
    • Level 200 mV RMS (-12 dBu nom)
  • Screw Terminals Off-hook Control (+5VDC Momentary)
  • Release Control (+5VDC Momentary)
  • OH LED Signal (pulled to ground on OH)
  • Phone Line RJ11C
  • Aux Phone RJ11C
  • Isolation 1500 VAC
  • Ringer 0.8B REN
  • Frequency Response Telephone Side 200 Hz - 3600 Hz
  • Size 4” x 5” x 1.5” (10.5 x 13 x 4 cm)
  • Weight 12 oz.

UPC: 814170010000

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