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The JK Audio THAT-1 is a telephone audio interface that connects between the telephone receiver and base. THAT-1 is designed to capture audio to record and play sound bytes or to send IFB dialogue over phone lines. The compact telephone tap features unbalanced RCA I/O.

Key Features

Convenient Design

THAT-1 is a compact telephone tap that connects between the receiver and base of any standard analogue telephone. The tap allows users to send line level feeds down telephone lines or capture send and receive signal for sound byte recording.

Line Level I/O

Unbalanced RCA connection provide seamless integration with consumer level audio gear.


InputUnbalanced: RCA Phono jack
OutputUnbalanced: RCA Phono jack
HandsetCompatible with electret handsets only.
Not for use with handsets that have keypads
IsolationIsolation 1500 volts
Phone LineRJ11C
ImpedanceLine Input: 20k ohms, 250 mV RMS, +12dBM
Line Output: 2800 ohms, 100 mV RMS, -16dBm
Power RequirementsPassive
Dimensionsnot specified by manufacturer
JK Audio THAT-1 Telephone Interface with RCA I/O
JK Audio
RM Product #: