Topping D90 MQA Desktop USB DAC

TOPPING

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A direct successor to the D70 Topping, the D90 benefits from the same refinements as its big brother while updating its DAC with a newer and more efficient version, the AK4499 AKM. For the rest, it largely follows the excellent internal design of the previous model and its exceptional performance.

This version includes an MQA decoder and supports full decoding of this type of file format on its USB input.

  • DAC AK4499 & Accusilicon Clocks
    New flagship from AKM, the AK4499 DAC chip allows precise, fast and clean conversion of high-resolution audio files. The D90 thus integrates on its digital-to-analog conversion stage an AK4499 chip with Thesycon drivers allowing transparent and rich sound reproduction and supporting PCM files up to 32bit 768kHz and DSD up to DSD512 (via USB and I2S).

    The DAC is combined with a pair of AccuSilicon 451584MHz and 49.1520MHz high-end femtosecond clocks and a CPLD. These allow a perfect synchronization of the data signals for an absolutely impressive jitter attenuation.

  • USB XMOS XU216 Interface & SPDIF AK4118 Receiver
    For its digital interfaces, Topping once again chooses very high quality and performance by integrating into its D90 an XMOS XU216 USB chip supporting high sampling rates up to 32bit 768kHz and up to native DSD512.

    For SPDIF streams, an AKM AK4118 AKM chip processes the signal with extremely low jitter. This last chip is used for the Optical, Coaxial and AES inputs and allows sampling rates up to 24bit 192kHz PCM to be achieved on the latter.

    Connectivity & Features
    With its many features and connections, the D90 can be integrated into a vast majority of audio systems, offering many options for use and installation.

    For its input connectivity, there are AES, USB-B (XMOS), Coaxial, Toslink Optics, and I2S LVDS via HDMI. Note that this last input has several selectable modes to adapt to your other I2S LVDS devices. On the output side, the D90 offers unbalanced RCA Stereo and balanced XLR. The D90's intelligent design allows only one or both outputs to be activated at a time.

    With its integrated volume control, the D90 also acts as a preamplifier since it includes a volume controller. This volume control function can however be disabled so that the D90 can only be used as a DAC with output levels constantly at their maximums, i.e. 4Vrms for XLR output and 2Vrms for RCA output.

  • SPECIFICATIONS
    Product type DAC
    DAC Chip AKM AK4499
    USB Interface XMOS XU216
    SPDIF Interface AK4118
    Bluetooth 5.0 / Apt-X HD / LDAC
    Inputs 1x I2S LVDS (HDMI)
    1x USB-B (XMOS)
    1x Optical Toslink
    1x Coaxial SPDIF
    1x AES/EBU
    Outputs 1x Balanced XLR
    1x Single-ended RCA
    Supported sampling rates MQA
    USB : PCM up to 32bit 768kHz / Native DSD up to DSD512 / DSD DoP up to DSD256
    I2S : PCM up to 32bit 768kHz / DSD up to DSD512
    Coaxial, Optical, AES : PCM up to 24bit 192kHz
    Output voltage RCA : 2Vrms @ 0dBFS
    XLR : 4Vrms @ 0dBFS
    Dynamic range (A-Weighting) 128dB
    GENERAL
    Power supply AC 110V/220V 50/60Hz (switchable) via IEC (cable included)
    Case material Aluminium
    Color Black
    Inclued USB-B to USB-A cable / Power cable / Remote control