Advance Paris WTX-700 EVO
Specifications and features
Overview
The WTX-700 EVO is a compact Bluetooth transmitter, measuring 60 × 55 × 14 mm and weighing 24 grams. It features Bluetooth 5.0 technology and is compatible with the aptX HD codec. This device allows you to stream music to a traditional hi-fi system. It uses a Texas Instruments PCM5102 digital-to-analog converter to deliver audio signals up to 24 bits/48 kHz.
Design and Integration: Miniaturization Serving Quality
The WTX-700 EVO adopts an especially compact format with its dimensions of 60 × 55 × 14 millimeters. This miniaturization enables direct integration onto the RCA inputs of any hi-fi amplifier, with a standard 1.5 cm spacing between the two connectors. The module therefore plugs in without any additional cable to any auxiliary input (AUX, CD, or other line input).
For amplifiers with different RCA spacing, a short connecting cable can be used to adapt the transmitter. Despite its featherweight 24 grams, the case houses all the necessary electronics: Bluetooth receiver, decoding circuits, and digital-to-analog converter.
The French design of the product prioritizes ease of use: no complex setup is required. Once plugged into the amplifier and powered, the WTX-700 EVO immediately appears in the list of available Bluetooth devices on source devices.
Embedded Technologies: The Alliance of Bluetooth 5.0 and the aptX HD Codec
The Bluetooth 5.0 protocol built into the WTX-700 EVO provides connection stability and extended range compared to previous generations. This version of Bluetooth significantly improves energy management and data transmission capacity, both essential for maintaining consistent audio quality.
The aptX HD codec is at the heart of the WTX-700 EVO’s quality proposition. Developed by Qualcomm, this codec enables audio transmission up to 576 kbps, allowing the transfer of 24-bit/48 kHz audio files. Unlike the standard SBC codec found on all Bluetooth devices, aptX HD uses a more sophisticated compression algorithm that preserves more sonic detail, especially in the 10-20 kHz frequency range where the harmonics that give instruments their character are found.
The Texas Instruments PCM5102 converter transforms the received digital signal into an analog signal. This chip, recognized in the audio industry for its performance, natively handles signals up to 32 bits/384 kHz. Its current-segment architecture offers a signal-to-noise ratio of 112 dB and total harmonic distortion of -93 dB. The PCM5102 also includes a charge pump that creates a negative voltage from the positive supply, thus eliminating the need for coupling capacitors in the audio signal path.
Beyond aptX HD, the WTX-700 EVO supports standard aptX codecs (352 kbps), AAC (Advanced Audio Coding, favored by Apple devices), and SBC (Sub-band Coding, the mandatory universal codec). This broad compatibility ensures operation with all Bluetooth devices on the market, with the transmitter automatically selecting the best available codec according to the connected source device.
Practical Use and Universal Compatibility
The WTX-700 EVO transforms any analog audio system into a modern Bluetooth receiver. Vintage amplifiers, traditional hi-fi systems, or active speakers equipped with RCA inputs can thus receive music from any Bluetooth A2DP (Advanced Audio Distribution Profile) compatible device.
Usage covers a wide range of sources: iOS and Android smartphones, tablets, Windows and macOS computers, digital audio players, and even some game consoles. Music streaming services such as Spotify, Deezer, Qobuz, Tidal, Apple Music, or YouTube Music stream their audio directly to the hi-fi system. Podcast apps, audiobooks, and even audio from videos or games can also be played.
The effective range depends on the environment but generally reaches about ten meters indoors, allowing you to control the music while moving around the room. Bluetooth 5.0 maintains a stable connection even in the presence of other wireless devices, reducing dropouts and interference common with older generations.
For users with multiple audio systems, the WTX-700 EVO can be easily moved from one amplifier to another thanks to its compact format and direct connection to RCA sockets. This versatility makes it a practical accessory for modernizing various audio equipment without major investment.
Technical Specifications
Wireless Connectivity
- Bluetooth 5.0
- Supported codecs: aptX, aptX HD, AAC, SBC
Audio Specifications
- External and integrated DAC (PCM Ti)
- 24-bit audio interfaces
- Independent TI PCM5102 DAC
- End-to-end 24-bit digital processing
- Optimized signal-to-noise ratio
- Distortion reduction in the 10–20 kHz range
Dimensions and Weight
- Dimensions: 60 × 14 × 55 mm (W × H × D)
- Net weight: 24 g
- Gross weight: 190 g
Advanced Technologies
- aptX HD codec for uncompromised 24-bit transmission
- Precise and high-performance digital-to-analog conversion
- Advanced digital processing for ultra-pure sound reproduction
- Architecture optimized for high-definition audio signals
Product Benefits
- Universal high-definition audio streaming
- Broad compatibility with Bluetooth devices
- Audiophile-grade sound quality with low distortion
- Compact, lightweight design for discreet integration
- Optimized signal-to-noise ratio for a premium experience
Frequently Asked Questions
What is the difference between the WTX-700 EVO and previous Advance Paris models?
The WTX-700 EVO features Bluetooth 5.0 and the aptX HD codec, unlike earlier versions limited to Bluetooth 4.2 and standard aptX. The PCM5102 converter also replaces previous generation chips, offering better performance in terms of signal-to-noise ratio and distortion. The ultra-compact format allows direct connection to RCA sockets without an intermediate cable.
Can I use the WTX-700 EVO with active speakers?
Yes, any active speaker with RCA inputs can accommodate the WTX-700 EVO. The 2.1 V RMS output level matches hi-fi equipment standards. Be sure to check the spacing of the RCA sockets on your speakers and, if necessary, use a short RCA cable to adapt the connection.
What is the real difference between aptX HD and standard Bluetooth?
The standard SBC codec compresses the audio signal to about 320 kbps maximum, with variable quality depending on conditions. aptX HD transmits at a constant 576 kbps with a more efficient compression algorithm, better preserving sonic detail. The difference is mainly noticeable on quality hi-fi systems, with better treble definition and a more precise soundstage.
Can multiple devices be connected simultaneously?
The WTX-700 EVO connects to only one source device at a time. To change sources, you must disconnect the first device before connecting a new one. This limitation is inherent to the Bluetooth audio A2DP profile, which does not support multipoint for high-quality music streaming.
Does the WTX-700 EVO introduce latency?
Like any Bluetooth system, there is a slight latency between the source and playback. aptX HD has a latency of about 150-200 milliseconds, which is imperceptible for music listening but may be noticeable when watching videos. For perfect audio/video sync, a wired connection is still preferable.
How can I optimize sound quality with the WTX-700 EVO?
To get the most out of the transmitter, use high-quality audio files (FLAC, ALAC, or high-definition streaming), make sure your source device supports aptX HD, and keep the Bluetooth source reasonably close to the receiver. In streaming apps, select the highest available quality in the settings.
- Eco-contribution of €0.12 included in the sale price.
- GTIN / EAN: 3760179291865
