1Mii DS700 HiFi Bluetooth Audio Transceiver - Long Range LDAC

In this review of the 1Mii DS700 HiFi Bluetooth Audio Transceiver, the bottom line is simple: this is for listeners who want to add high-resolution wireless audio to a wired home system without replacing components. The DS700 works as both a transmitter and a receiver and its biggest pull is support for high-quality codecs like LDAC and aptX HD, plus an audiophile DAC that noticeably improves clarity compared with generic Bluetooth dongles. Setup is straightforward for anyone comfortable with optical, coaxial, or RCA connections, and the OLED makes day-to-day use clear and convenient.

Key Features

• Multifunctional transmitter and receiver: Lets users convert TVs, CD players, and other wired sources into Bluetooth-capable devices by offering optical, coaxial and RCA connectivity.
• Hi-Res wireless audio with LDAC: Provides higher bandwidth Bluetooth streaming for compatible phones and players, improving detail and dynamics over standard SBC or AAC in receiver mode.
• Audiophile-grade DAC: Uses a high-performance ES9018K2M DAC and Qualcomm CSR8675 chip to deliver a cleaner, more lifelike analog output than many competitors.
• Long range wireless: Tuned antenna and circuitry extend reliable Bluetooth reach up to 100+ ft, useful for large rooms or when the source and speakers are separated by walls.
• No-delay and dual link: AptX Low Latency reduces audio lag when paired with compatible devices and supports dual-link so two headphones or speakers can play simultaneously.
• OLED display and volume control: The front OLED shows mode, codec and connection status and the multifunction knob makes on-device volume adjustments easy.

Who It's For

The DS700 is best for audiophiles and home-theater owners who want to retain their existing wired gear while adding modern Bluetooth streaming with improved fidelity; those with systems that accept optical, coaxial or RCA inputs get the most value. It also fits users who need long-range, stable wireless in larger homes or across multiple rooms.

It is less suited to people who only need a simple plug-and-play dongle for a single portable speaker or those whose devices lack optical or coaxial outputs when using the transmitter function; in those cases a basic adapter will be cheaper and simpler.

Pros & Cons

Pros

• High-quality sound from the ES9018K2M DAC and support for aptX HD and LDAC improves detail and tonal balance.
• Flexible inputs and outputs (optical, coaxial, RCA) make it compatible with most home audio gear.
• Long range and dual-link capability are useful for multi-room setups or simultaneous headphone connections.

Cons

• Low latency benefits require both ends to support aptX Low Latency, otherwise some delay remains.
• Transmitter mode needs a device with optical or coaxial output, so TVs or sources without those outputs cannot use that function.

Specifications

Function	Bluetooth Transmitter and Receiver
Codec support	LDAC, aptX HD, aptX LL, aptX, SBC, AAC (AAC only in receiver)
Digital-to-Analog Converter	ES9018K2M
Bluetooth chip	Qualcomm CSR8675
Connections	Optical (Toslink), Coaxial, RCA (output only)
Display	OLED
Wireless range	Up to 100+ ft (environment dependent)

Our Verdict

The 1Mii DS700 is a practical upgrade for anyone who wants true Hi-Res Bluetooth streaming and flexible connectivity without replacing a stereo or TV. Its audiophile DAC, codec support and long range deliver clear value for enthusiasts and home theater users, though true low-latency performance depends on compatible receiving devices.

Frequently Asked Questions

Can the DS700 stream LDAC from a phone?
Yes, when used in receiver mode with a compatible phone or source that supports LDAC, it can receive high-resolution LDAC streams.

Does it offer optical output when used as a receiver?
Yes, the receiver function supports Optical, Coaxial and RCA audio input interfaces for playback devices.

Will aptX Low Latency eliminate all delay?
AptX LL minimizes delay but only if the receiving headphones or speakers also support aptX Low Latency; otherwise you may still notice 70-220 ms of latency.