Real Cable iPlug-BTR HD
Specifications and features
Overview
The Real Cable iPlug-BTR HD transforms any amplifier or DAC into a wireless receiver compatible with the latest Bluetooth audio transmission technologies. This compact solution instantly integrates your mobile devices into your existing hi-fi setup, without compromising sound quality thanks to its compatibility with high-definition codecs.
A concentration of technology in a miniature enclosure
The iPlug-BTR HD comes in a rectangular case with particularly compact dimensions (76 x 22 x 70 mm for just 56 grams). Its small size allows for discreet integration behind an amplifier or in a hi-fi cabinet, without cluttering your existing setup. The clean, functional design prioritizes efficiency, with a matte black finish that blends seamlessly with most audio equipment.
The device features a blue LED indicating operating status: solid when a device is connected, flashing in pairing mode. This LED, reportedly quite bright according to user feedback, can be a bit intrusive in a dark room—some users choose to cover it with a discreet cap to preserve the visual ambiance of their setup.
Connectivity is versatile, with two separate outputs. The analog 3.5 mm mini-jack output comes with a mini-jack to RCA converter cable included in the box, making it easy to connect directly to an amplifier’s line inputs. The optical Toslink digital output allows for direct connection to an external DAC or the digital inputs of a modern home theater amplifier, keeping the signal in the digital domain until the very last stage.
Audio performance at the core of the design
The Real Cable iPlug-BTR HD incorporates a Wolfson WM8524 digital-to-analog converter, a chip capable of handling signals up to 24-bit/192 kHz. This stereo DAC, developed by Wolfson Microelectronics (now Cirrus Logic), uses an architecture with an integrated charge pump to deliver a 2 Vrms output on a single 3.3 V supply. This technical design ensures ground-referenced outputs, effectively eliminating parasitic noise and startup clicks.
Multi-codec compatibility is the device’s major asset. Beyond the mandatory SBC codec for any Bluetooth device, the iPlug-BTR HD supports standard aptX, aptX HD, aptX Low Latency, and the A2DP profile for stereo transmission. The aptX HD codec deserves special mention: with a 576 kbps bitrate, it transmits audio streams up to 24-bit/48 kHz, preserving an extended 20 Hz to 20 kHz bandwidth with minimal distortion. This technology developed by Qualcomm uses sophisticated compression that maintains the integrity of the audible spectrum, placing the noise floor around -110 dB in the high frequencies, where the human ear is naturally less sensitive.
Measured performance confirms these technical ambitions: a signal-to-noise ratio of 104 dB, total harmonic distortion limited to 0.05%, and channel separation of 45 dB. These figures translate into a sonically transparent reproduction, free from coloration or audible artifacts, allowing you to fully enjoy high-resolution music streaming services such as Qobuz, Tidal, or Deezer HiFi.
Simplicity built into everyday use
Pairing with source devices follows the standard Bluetooth protocol, with no dedicated app or complex setup required. The built-in memory can store up to eight different devices, allowing multiple household members to connect their personal smartphones or tablets without repeating the pairing procedure each time. The receiver automatically reconnects to the last used device when powered on.
The stated range of 20 meters in open space translates in practice to reliable coverage of about 10 to 12 meters without obstacles, or 3 to 4 meters with walls in between. This distance is sufficient for most home setups, allowing you to control music from a sofa or an adjacent room. Connection stability naturally depends on the electromagnetic environment: proximity to Wi‑Fi routers, microwave ovens, or other Bluetooth devices can occasionally disrupt transmission.
The included external power supply (5 V - 0.6 A) uses a compact wall adapter. This separate power supply helps isolate the receiver’s sensitive electronics from mains interference, contributing to the final sound quality. The low current draw (0.6 A) reflects the circuit’s energy efficiency, limiting heat buildup and ensuring long-term reliability.
Technical specifications
Bluetooth connectivity
- Bluetooth profiles: A2DP and AVRCP
- Audio codecs: aptX, SBC, and HD
- Number of paired devices: up to 8
- Transmission range: up to 10 m
Audio connections
- Stereo analog audio output: 3.5 mm mini-jack
- Digital optical audio output: Toslink
- Stereo mini-jack to RCA cable included
Audio performance
- Frequency response: 20 - 20000 Hz (+/- 3 dB)
- Channel separation: 45 dB
- Signal-to-noise ratio: 104 dB
- Total harmonic distortion: 0.05%
- Supported audio resolution: up to 24-bit / 48 kHz
Power and dimensions
- External power supply included: 5 V - 0.6 A
- Weight: 55 g
- Dimensions (W x D x H): 70 x 75 x 20 mm
Compatibility and general information
- Compatible with all smartphones, tablets, portable audio players, and computers equipped with Bluetooth
- Compatible with integrated amplifiers, preamplifiers, powered speakers, and hi-fi systems
- Included accessories: RCA / mini-jack cable, AC power adapter
Frequently Asked Questions
Is the iPlug-BTR HD compatible with all recent smartphones?
Yes, the device works with any smartphone, tablet, or computer equipped with Bluetooth, whether Android, iOS, Windows, or macOS. Compatibility with high-definition codecs like aptX HD will depend on your source device’s capabilities—iPhones, for example, use the AAC codec, while many recent Android smartphones support aptX or aptX HD.
Can the analog and digital outputs be used simultaneously?
Both outputs are always active, theoretically allowing two different systems to be connected. However, the device is designed for use with a single output at a time to ensure optimal performance. Simultaneous use may cause signal degradation or impedance issues depending on the connected equipment.
What’s the concrete difference between standard SBC and aptX HD codecs?
The SBC codec, mandatory on all Bluetooth devices, uses more aggressive compression that can affect subtle musical details, particularly in the high frequencies. AptX HD, with its 576 kbps bitrate versus roughly 320 kbps for SBC, preserves more information from the original signal, resulting in better instrument definition, a wider soundstage, and more precise transients.
Is the optical cable included with the device?
No, only the mini-jack to RCA analog cable is included in the box. If you want to use the optical digital output, you’ll need to purchase a Toslink cable separately in a length appropriate for your setup.
- Eco-contribution included in the sale price.
- GTIN / EAN: 3700195880773
