UGREEN 70158 Bluetooth 5.0 Optical/AUX Transmitter/Receiver

Overview

The UGREEN 70158 is a Bluetooth transmitter and receiver with both optical (S/PDIF) and 3.5 mm AUX connections. As a transmitter it sends TV sound to Bluetooth headphones over optical or AUX; as a receiver it streams music from a phone into a soundbar, amplifier or speaker. It supports aptX, aptX HD and aptX Low Latency, runs from its own battery for up to 15 hours, and pairs with two devices in either mode. It suits a TV without Bluetooth, or wired audio equipment that you want to feed from a phone.

Is it right for you?

• Suits a TV with an optical or 3.5 mm output when you want to listen through Bluetooth headphones, with low delay if the headphones also support aptX Low Latency.
• Suits a soundbar, amplifier or speaker with an optical or 3.5 mm input that you want to feed from a phone.
• The optical input needs a stereo PCM signal. It does not decode Dolby or DTS, so set the TV to output PCM.
• It is not HDMI ARC or eARC, not USB audio and not LDAC.

Key features

• Bluetooth 5.0 with transmitter (TX) and receiver (RX) roles.
• Optical S/PDIF input and output plus 3.5 mm AUX input and output.
• aptX, aptX HD and aptX Low Latency codecs; the common fallback codec depends on the other device.
• Dual link in both TX and RX, so two headphones or two phones can connect.
• Up to 15 hours in TX mode or 12 hours in RX mode per charge; charging takes about 3 hours.
• Micro-USB port for power only.

What else you need

• A TV, player or computer with an optical or 3.5 mm output (TX), or a speaker, soundbar or amplifier with an optical or 3.5 mm input (RX), plus the matching cable.
• Bluetooth headphones (TX) or a phone or tablet that streams Bluetooth audio (RX).
• A Micro-USB cable and 5 V USB power source for charging.
• For the lowest delay, headphones that support aptX Low Latency.

Before you buy

• Choose the direction before you buy: TX when the wired device is the source, RX when it is the speaker.
• Use compatible stereo PCM on the optical connection. It does not decode Dolby or DTS and is not a DAC for professional digital formats.
• Not HDMI ARC or eARC, not USB audio, not LDAC, and no built-in microphone is claimed.
• The Micro-USB port is for power only.
• Connect analogue ports only to headphone or AUX line-level connections, never to speaker outputs, mains or unknown signals.
• Do not charge a wet, swollen or hot product. Start at low volume and take breaks.
• Check the UGREEN item number on the box rather than buying by family name alone, and keep the manual for the mode switch and reset procedure.