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Balanced DAC 2x AK4497 I2S XMOS Bluetooth 5.0 LDAC 32bit 768kHz DSD512
The Topping D70S MQA is an extremely versatile and powerful balanced digital to analog converter. With its careful design and intelligent architecture, it offers a realistic, rich and lively sound reproduction, while providing full connectivity.
The D70S MQA supports Master Quality Authenticated (MQA) files. These allow you to enjoy sound reproduction as close as possible to the original recording in the studio, while still being light enough to be played back for broadcast.
The D70S MAQ's digital-to-analog conversion stage has two AKM AK4497 DAC chips, one DAC chip per channel. This architecture provides better channel separation, while ensuring optimized overall performance, including extremely low THD+N.
Incorporating a Qualcomm CSR8675 chip, the D70S MQA features Bluetooth 5.0 reception, allowing you to stream your music remotely. The chip supports the standard SBC and AAC codecs, as well as the high-definition codecs aptX, aptX LL, aptX HD and LDAC, providing much higher quality playback. In addition, the DAC on the Qualcomm CSR8675 chip is not used here, as conversion is performed by the two AK4497 converters.
The USB input of the D70S is associated with a 16-core XMOS XU216 interface chip, supporting PCM audio streams up to 32bit 768kHz, DSD Native up to DSD512, as well as MQA decoding. A custom Thesycon driver is used, to enable the best playback performance via ASIO.
The SPDIF inputs are associated with an AK4118 digital receiver chip. The latter allows very low jitter while supporting sample rates up to PCM 24bit 192kHz.
The D70S MQA uses an Altera MAX II CPLD. This takes care of the signal processing of the Accusilicon femtosecond clocks and signal optimization. This combination of CPLD and Accusilicon clocks allows an extremely low jitter level to be achieved, while perfectly synchronizing the digital signal processing and optimization for better signal quality and stability.
The D70S MQA offers a wide range of connectors to meet all needs. These include AES/EBU, USB-B, Bluetooth 5.0, Optical, Coaxial and I2S. The 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 support for 24bit 96kHz files.
Topping D70S MQA also allows to select the 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.
|1||Balanced XLR output|
|2||Single-ended RCA output|
|3||I2S HDMI input|
|4||Bluetooth antenna connector|
|5||Optical Toslink input|
The D70S MQA's HDMI I2S input has several settings, making it compatible with most I2S interfaces. The "IIS Phase", "IIS DSDR" and "DSD FLAG" parameters can be adjusted.
|Product type||Balanced DAC|
|Inputs||1x I2S LVDS HDMI
1x Optical Toslink
1x SPDIF Coaxial
|Outputs||1x Balanced XLR
1x Single-ended RCA
|Supported sampling rates||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|
|Power supply||100-240VAC (switchable, power cable included)|
|Dimensions||25 x 19.5 x 5cm|
|Color||Black or Silver|
|Package||1x Topping D70S MQA
1x Remote control
1x USB cable
1x Power cable
1x Bluetooth antenna