The Gustard X18 DAC features a dual-DAC architecture, utilizing the AKM AK4497EQ chip, which is designed for high-resolution audio processing and provides a significant dynamic range.
Its support for PCM audio formats up to 32-bit/768kHz means that it can decode audio files with an expansive amount of detail, surpassing CD quality, which is limited to 16-bit/44.1kHz.
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The DAC also supports DSD (Direct Stream Digital) formats, including DSD128 and DSD256, enabling playback of audio files that are sampled at very high rates, which are popular for audiophile music collections.
The X18 incorporates a USB input that is compatible with both Windows and Mac operating systems, allowing for seamless integration with various playback devices without needing additional drivers on most platforms.
A notable feature is the implementation of an ultra-low phase noise crystal oscillator, which minimizes jitter, providing a cleaner audio signal and preserving the integrity of the sound during playback.
This DAC employs high-quality components, including Nichicon capacitors and separate power supplies for digital and analog stages, which helps to mitigate interference and improve overall sound quality.
The device features a balanced XLR output, which allows users to connect to a wider range of audio equipment and delivers enhanced signal integrity, reducing noise in the signal path.
The X18 is equipped with a high-performance headphone amplifier, which can drive a wide variety of headphones efficiently, allowing users to enjoy high fidelity audio without needing an external amplifier.
Its digital filter settings allow users to customize the sound profile to their preferences, including options that can emphasize different aspects of the audio, such as transient response or overall warmth.
The X18 DAC utilizes a fully discrete output stage rather than integrated circuits, which can lead to a more organic sound reproduction and greater fidelity in the audio output.
The unit supports various digital inputs including optical, coaxial, and USB, making it versatile enough to connect to a multitude of digital audio sources, from computers to music streamers.
It has a robust aluminum chassis, which is not just aesthetic; this construction helps reduce vibrations that could affect audio performance and provides shielding from electromagnetic interference.
The power supply design features low-noise regulators, which can enhance audio performance by reducing the background noise often introduced in less carefully designed power supplies.
The X18 DAC also supports MQA (Master Quality Authenticated), which allows for playback of high-resolution audio files in a compact form, catering to audiophiles seeking higher fidelity from streaming services.
To facilitate a clean power delivery, the device features a built-in power treatment system that stabilizes voltage and minimizes current fluctuations, which can lead to improved clarity in audio playback.
The asynchronous USB interface implemented in the X18 allows the DAC to control the timing of data delivery from the computer, which significantly reduces jitter, a common issue causing audio distortion.
The device comes with an intuitive front panel display that provides real-time feedback on input selection, sample rates, and volume levels, enhancing user experience and interaction.
The circuit design incorporates a low-pass filter to ensure that high-frequency noise is attenuated, allowing for smoother audio reproduction without harshness or unwanted artifacts.
The X18 supports a wide input voltage range, from 100V to 240V AC, making it suitable for use in different countries without requiring a voltage converter.
With an estimated lifespan of over 10,000 hours for its internal components, the longevity of the Gustard X18 DAC can be a significant factor for users looking for sustained audio performance over time.