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GUSTARD DAC-A18 Balanced DAC AK4499 Accusilicon XMOS MQA Bluetooth 5.0 32bit 768kHz DSD512 Silver
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Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.
Gustard DAC-A18
Balanced DAC AK4499 Accuslicon XMOS Bluetooth 5.0 32bit 768kHz DSD512
The Gustard DAC-A18 is a balanced DAC that benefits from a particularly careful design to deliver a sound of great purity and incredible richness.
Test by Audio Science Review
Looks like the A18 aims at very high level of performance, stopping just shy of heroic efforts to squeeze down the last bit of noise and distortion. In return if my memory is serving me correctly, you save money compared to the ones that do go that extra inch. So you more choice of pricing and performance in the top bracket.
I am happy to recommend the Gustard A18 DAC.
AKM AK4499 DAC
At the heart of the device is the conversion circuit, based on a high-end DAC chip, the AKM AK4499. It is a 32bit digital/analogue converter with very low noise and distortion and supports high sample rates up to 32bit 768kHz PCM and up to DSD512. It is a major contributor to the Gustard DAC-A18's ability to deliver accurate, dense and vivid playback. This chip also offers a choice of 6 PCM filters and 2 DSD filters.
CPLD Altera Max II
This conversion chip is associated with an Altera Max II CPLD, which is in charge of clock management, second PLL, digital flow management and DoP decoding.
Connectivity
The DAC-A18 has connectors covering most requirements for integration into most audio systems. Inputs include USB-B (XMOS), I2S HDMI LVDS, AES/EBU, Coaxial, Optical and Bluetooth 5.0 connectivity. On the output side, the Gustard offers a choice of balanced XLR or unbalanced RCA.
XMOS USB & MQA
Behind the USB-B input is an XMOS XU216 interface for receiving the audio signal. This interface is particularly powerful and supports high-resolution files, all of which contribute to accurate sound reproduction.
It is also this chip that enables the Gustard DAC-A18 to support and decode MQA files, ensuring playback quality as close as possible to the original recording.
Bluetooth 5.0
Conveniently, the DAC-A18 includes a Qualcomm CSR8675 Bluetooth 5.0 chip, enabling music to be streamed directly from a smartphone or tablet. The chip supports a variety of codecs, some of which enable high-quality playback, such as aptX-HD or LDAC.
Accusilicon Clock
Two highly accurate Accusilicon As318-B femtosecond clocks provide perfect signal synchronization to drastically reduce jitter and consequently distortion and noise.
High quality circuit
The entire circuit benefits from a careful design, based on the use of high-performance components within an intelligent architecture. These include four high-performance LME49860 dual AOPs to meet the high current demand of the AK4499, an integrated linear power supply circuit to provide the various circuits with a clean electrical signal, a high-performance filtering system, high-precision resistors and TPS7A47 and TPS7A33 regulators.
Technical characteristics
| Specifications | |
|---|---|
| Product type | Balanced DAC |
| Conversion chip | AKM AK4499 |
| USB interface | XMOS XU216 |
| Bluetooth chip | CSR8675 |
| CPLD | Altera Max II |
| Inputs | 1x I2S HDMI LVDS 1x USB-B XMOS 1x AES/EBU 1x Coaxial 1x Optical Bluetooth |
| Outputs | 1x Balanced XLR 1x Single-ended RCA |
| Supported sampling rates | USB : PCM up to 32bit 768kHz / Native DSD up to DSD512 / DSD DoP up to DSD256 I2S : PCM up to 32bit 768kHz / Native DSD up to DSD512 / DSD DoP up to DSD256 Coaxial, AES : PCM up to 24bit 192kHz / DSD DoP up to DSD64 Bluetooth : PCM up to 24bit 96kHz |
| Frequency response | 20Hz - 20kHz ±0.08dB |
| Output level | Single-ended (RCA) : 3Vrms @ 0dBFS Balanced (XLR) : 6Vrms @ 0dBFS |
| Bluetooth version | 5.0 |
| Supported Bluetooth codecs | AAC, SBC, aptX, aptX LL, aptX HD, LDAC |
| Clocks | 2x Accusilicon AS318-B |
| XLR Pinout | 1 : GND 2 : + 3 : - |
| PCM Filters | Short Delay Sharp Roll-Off Short Delay Slow Roll-Off Sharp Roll-Off Slow Roll-Off Super Slow Roll-Off Low Dispersion Short Delay Filter |
| DSD Filters | L-BW H-BW |
| General | |
|---|---|
| Housing material | Aluminium |
| Color | Silver |
| Dimensions | 220 x 170 x 50mm |
| Weight | 2.5kg |
| Package | 1x Gustard DAC-A18 1x Power cable 1x USB cable 1x Remote control 1x Bluetooth antenna |
1kHz THD+N (Non-Weighted)
FFT
THD+N Specific Frequency
Dynamic range
Frequency response
SNR
HDMI Pinout
| Input | USB |
| Input | Optical |
| Input | I2S via HDMI |
| Input | SPDIF |
| Input | Bluetooth |
| Input | AES/EBU |
| Output | XLR |
| Output | RCA |
| DAC / ADC Chip | AK4499 |
| Max sampling rate | 768kHz |
| Max sampling rate | DSD512 |
| Color | Silver |
| Networking | No |
| Remote Control | Yes |
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