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The Sony WH-CH720N headphones are over-ear buetooth headphones with Active Noise Canceling (ANC), Passthrough, virtual surround sound, and multi-device pairing capabilities. They support both Bluetooth and auxiliary (Aux) connections.
Purpose:
- General purpose headphones
- Suitable for VR/XR/MR due to audio passthrough feature
- No latency in cable connection, 30-40ms latency via Bluetooth
Quick Guide:
- Pairing: Press Bluetooth button for 5 seconds until the indicator light blinks.
- Get the latest software and drivers here
Full-duplex audio (simultaneous headphone and microphone use) is possible like so:
1. full-duplex using minijack cable:
- Connect to a (TRS) Y-splitter-cable (one socket, two connectors) to the headphones with the provided AUX cable.
- Connect Y-cable outs to the Headphone outs and Microphone inputs of USB audio adapter.
- NB: headphone audio will be mono
2. full-duplex via Bluetooth:
- Functional on iOS and MacOS (Versions? Software?)
- Not possible on an RPi (still testing possibilities).
3. full-duplex combining Bluetooth and Cable (AUX):
- Bluetooth connection (in or out) not possible when headphones are already connected by aux cable (out or in).
- More details here
Below are Frequency Response and Isolation curves from this review.
Use Sony Headphones Connect app for calibrating Frequency Response via EQ.
Images:
Headphones, case, and included cables:
Troubleshooting:
- Issue: Microphone's low input level (only loud noises or direct contact were audible).
- Solution: Software update from Sony requiring a reset.
- Reset Process: Press Bluetooth and middle button on the right side simultaneously until Bluetooth indicator blinks four times.
Further information is available in the manual: