- New
Bluetooth headphone amp and USB DAC with dual CS43198 and a Qualcomm QCC5181 core. Bluetooth 5.4 aptX Lossless/LDAC, MagSafe magnetic back.
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Two CS43198 convert the signal, the Qualcomm QCC5181 core handles Bluetooth decoding. The W4 works as a wireless receiver and a wired DAC in the same body.

The Bluetooth 5.4 link takes aptX Adaptive, aptX Lossless, aptX-HD and LDAC. The bitrate follows the source to carry a near-lossless stream from a phone.

As a USB DAC, the W4 runs in uncharge mode: it does not draw the host phone's battery and pulls current from its own cell. The phone drains that much slower.

The magnetic back attaches to MagSafe accessories and clips onto the rear of a phone. The 1500 mAh battery powers sessions, decoding up to DSD512 and PCM 768 kHz.
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