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Balanced DAC 2x AK4497 I2S XMOS Bluetooth 5.0 LDAC 32bit 768kHz DSD512 Black
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 |
| 6 | Coaxial input |
| 7 | USB-B input |
| 8 | AES/EBU input |
| 9 | Power connector |
| 10 | Power button |
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.
| 5.1 | Power button |
| 5.2 | Volume + |
| 5.3 | Previous input |
| 5.4 | Volume - |
| 5.5 | NC |
| 5.6 | Filter selection |
| 5.7 | Auto standby |
| 5.8 | Mute |
| 5.9 | Output selection |
| 5.10 | Next input |
| 5.11 | NC |
| 5.12 | NC |
| 5.13 | Brightness setting |
A switch on the back of the unit allows you to select the input voltage between 230V AC and 115V AC. Before connecting the appliance and switching it on, be sure to select the input voltage that corresponds to the voltage delivered by your power supply network.
" Another stellar DAC is released by Topping in the form of D70s giving us another option to purchase. Instrument grade performance is provided. Yes, our tests are so good that even in best of the best we can expose a few tiny rough corners. But in the larger picture it is hard to hold back anything but top praise for this level of engineering. "
| Specifications | |
|---|---|
| Product type | Balanced DAC |
| Inputs | 1x I2S LVDS HDMI 1x USB-B 1x Optical Toslink 1x SPDIF Coaxial 1x AES/EBU Bluetooth 5.0 |
| 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 |
| Output impedance | 100Ω | 200Ω |
| General | |
|---|---|
| Power supply | 100-240VAC (switchable, power cable included) |
| Dimensions | 25 x 19.5 x 5cm |
| Housing material | Aluminum |
| Color | Silver |
| Package | 1x Topping D70S MQA 1x Remote control 1x USB cable 1x Power cable 1x Bluetooth antenna |
| Input | USB |
| Input | Optical |
| Input | I2S via HDMI |
| Input | SPDIF |
| Input | Bluetooth |
| Input | AES/EBU |
| Output | XLR |
| Output | RCA |
| DAC / ADC Chip | AK4497EQ |
| Max sampling rate | 768kHz |
| Max sampling rate | DSD512 |
| Color | Silver |
| Networking | No |
| Remote Control | Yes |
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