# Sennheiser's new USB Hi-Res Audio dongle can upgrade your Mac, iPhone or PC with aptX Lossless and Bluetooth Auracast

> The Sennheiser BTD 700 is a USB-C wireless dongle Bluetooth 5. 4 with aptX Adaptive and Auracast, and a USB-A adapter £44. 99 / $59.

- **Source:** [TechRadar](https://www.techradar.com/audio/sennheisers-new-usb-hi-res-audio-dongle-can-upgrade-your-mac-iphone-or-pc-with-aptx-lossless-and-bluetooth-auracast?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=68418ec81095d5e671b412f6)
- **Published:** 2025-06-05
- **Category:** Audio & Video
- **Tags:** #headphones #earbuds #iphone #apple #aptx #auracast #bluetooth #dongle
- **Canonical:** http://localhost:4321/a/68418ec81095d5e671b412f6

---

_GearOpen's distilled summary. The full original article is published at TechRadar (source link above); GearOpen does not republish the source's full text._