TOPPING D70S MQA
Balanced DAC 2x AK4497 Bluetooth 5.0 LDAC I2S XMOS 32bit 768kHz DSD512.
The Topping D70S MQA is an extremely versatile and powerful balanced digital-to-analog converter. Benefiting from a particularly careful design and intelligent architecture, it offers realistic, rich and lively sound reproduction, while providing full connectivity.
The D70S MQA supports MQA (Master Quality Authenticated) files. These allow you to enjoy sound reproduction as close as possible to the original recording in the studio, while being light enough to be broadcast.
Dual DAC AKM AK4497
The digital/analog conversion stage of the D70S MAQ has two AKM AK4497 DAC chips on board, i.e. one DAC chip per channel. This architecture makes it possible to obtain a better separation of the channels, while ensuring optimized general performance, with in particular an extremely low THD + N.
Integrating a Qualcomm CSR8675 chip, the D70S MQA has Bluetooth 5.0 reception, allowing you to remotely broadcast your music. This chip supports the standard SBC and AAC codecs, but also the high definition aptX, aptX LL, aptX HD and LDAC codecs, ensuring a much higher quality of reproduction. In addition, the DAC integrated into the Qualcomm CSR8675 chip is not used here, the conversion being provided by the two AK4497 converters.
USB XMOS Interface
The USB input of the D70S is associated with a 16-core XMOS XU216 interface chip, supporting PCM audio streams up to 32bit 768kHz, Native DSD up to DSD512, as well as MQA decoding. A custom Thesycon driver is used, in order to allow the best playback performance via ASIO.
AK4118 digital receiver
SPDIF inputs are associated with an AK4118 digital receiver chip. The latter allows to achieve a very low jitter while supporting sampling rates up to PCM 24bit 192kHz.
CPLD & Accusilicon Clocks
The D70S MQA uses an Altera MAX II CPLD. This is responsible for processing the signal of the Accusilicon femtosecond clocks and for optimizing the signals. This combination of CPLD and Accusilicon clocks achieves extremely low jitter level, while perfectly synchronizing digital signal processing and optimization for better signal quality and stability.
A more than complete connection
The D70S MQA offers a variety of connectors to meet all needs. We thus find at the input of AES / EBU, USB-B, Bluetooth 5.0, Optics, Coaxial and I2S. USB and I2S inputs support high resolution files, up to PCM 24bit 768kHz and native DSD512. The Bluetooth input is compatible with the LDAC transmission codec, allowing the support of 24bit 96kHz files.
The Topping D70S MQA also allows the choice of active outputs. It is thus possible to use only the balanced XLR output, the unbalanced RCA output or to output on both at the same time.
High compatibility I2S LVDS input
The I2S HDMI input of the D70S MQA has several settings, making it compatible with most I2S interfaces. It is thus possible to adjust the "IIS Phase", "IIS DSDR" and "DSD FLAG" parameters.
|Type of product||Balanced DAC|
|Input||1x I2S LVDS HDMI|
1x Optical Toslink
1x SPDIF Coaxial
|Output||1x XLR balanced|
1x RCA unbalanced
|Supported sampling rate||USB: PCM up to 32bit 768kHz, Native DSD up to DSD512, DoP up to DSD256, MQA up to 32bit 384kHz|
I2S: PCM up to 32bit 768kHz, Native DSD up to DSD512
Coaxial / Optical / AES: PCM up to 24bit 192kHz
|Supported Bluetooth codecs||AAC, SBC, aptX, aptX LL, aptX HD, LDAC|
|MEASUREMENTS @ USB IN, 96KHZ|
|RCA Line Output||XLR Line Output|
|THD+N @ A-Weighting, 20kBw, volume = -2dB||< 0.00015% @ 1kHz||< 0.0001% @ 1kHz|
|THD @ No-Weighting, 90kBw, volume = -2dB||< 0.0004% @ 20Hz-20kHz||< 0.0002% @ 20Hz-20kHz|
|SNR @ A-Weighting||124dB @1kHz||127dB @ 1kHz|
|Dynamic range @ A-Weighting||124dB @1kHz||127dB @ 1kHz|
|Frequency response||20Hz - 20kHz (±0.1dB)|
20Hz - 40kHz (±0.3dB)
|20Hz - 20kHz (±0.1dB)|
20Hz - 40kHz (±0.3dB)
|Output voltage||2.5Vrms @ 0dBFS||5Vrms @ 0dBFS|
|Noise @ A-Weighting||< 1.3µVrms||< 2µVrms|
|Alimentation||100-240VAC (selectable, power cable supplied)|
|Dimensions||25 x 19.5 x 5cm|