JK Audio CellTap 4C Cell Phone Audio Tap
The JK Audio CellTap 4C sits between an ear-bud headset and a phone, tablet, or notebook and sends both sides of a cell phone interview to a recorder or mixer as a stereo output.
It works with most devices that use the 3.5 mm four-conductor TRRS headset jack. Its output feeds a mic-level input on the recorder or mixer. A wired headset must stay connected, since the phone does not recognize the CellTap 4C without one. The headset’s button controls keep working on most devices.
The transformer-coupled stereo output puts the local mic on the left channel and the caller on the right. Your voice comes through a full-bandwidth connection, so it sounds considerably better than the caller. The ear-bud mic’s quality and placement still shape how it sounds. An internal switch supports both common TRRS wirings: sleeve as ground with ring 2 as mic, or the reverse. Headset wiring has no true standard, so not every phone is compatible.
HD Voice phones on supported networks carry 7 kHz wide-band speech. The CellTap 4C needs no battery or AC power.
Features
- Records the local mic and the caller on separate channels
- Transformer-coupled 3.5 mm stereo output
- Switch for the two common TRRS wirings
- Works with most 3.5 mm TRRS phones, tablets, and notebooks
- HD Voice compatible (7 kHz wide-band speech)
- Passive design with no battery or AC power
- Made in America





