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Topping D90

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Topping D90 is a new balanced flagship DAC by Topping, built around the latest Asahi Kasei Microdevices flagship DAC / AMP chip, AKM AK4499EQ. It is also equipped with the second generation XMOS XU208 USB interface chip, the AKM AK4118 S/PDIF receiver chip and the CPLD programmable logic chip. It uses German Thesycon controllers. It is equipped with a pair of AccuSilicon 451584 MHz and 491520 MHz femtosecond clocks, ensuring the best sound quality.

Flagship DAC offering a velvety sound output power

Topping D90 is equipped with the flagship Asahi Kasei Microdevices AKM AK4499 digital/analog converter chip, boasting AKM’s Velvet Sound Technology, which makes it a very efficient DAC, providing exceptional sound quality and rich details. AK4499EQ current-output DAC is a successor of the AK4497EQ and is produced using the same Premium Audio LSI process and Non-Magnetic Packaging technology originally developed for the AK4497EQ. These dramatically improve noise performance, especially in the traditionally problematic lower frequency range. It achieves industry-leading low distortion and low noise characteristics through newly developed distortion reduction technology and low noise design. The AK4499EQ supports PCM and DSD512 inputs up to 768kHz. AKM’s Low-Distortion Technology has been optimized for the AK4499’s current-output architecture, resulting in a THD+N measurement of -124dB. The AK4499EQ achieves SNR of 140dB in mono mode. It has been implemented with 4 OPA 1612 amplifiers, 7 hi-fi capacitors, CPLD processing using 2 Accusilicon femtosecond clocks that provide completely noise-free and jitter-free sound. This transducer provides soft, smooth and vibrant sound quality, that’s why it’s called Velvet Sound Verita. The sound output is natural and soft, which accurately reproduces all the micro details of your choice of music.

USB interface is controlled by the second generation XMOS XU208 USB interface, well known to audiophiles and offering an exceptionally transparent sound. XU208 chip is a representative of the xCORE-200 Series by XMOS and is a 32-bit mulitcore microcontroller characterized by its low latency and timing determinism. Unlike conventional microcontrollers, XU208 is cabable of exectuing multiple real-time tasks simultaneously and communicate between tasks using a high speed network.

A myriad of inputs

The Topping D90 is equipped with a high-quality USB XMOS XU208 chip, which offers a high PCM sampling rate up to 32-bit / 768 kHz and native DSD up to DSD512, and a crystal clear background without noise. This set is simply unique and charming. IIS input is supported via HDMI port, which provides a better signal, which is sent to the DAC for decoding services, this function only uses IIS signal via HDMI, so you cannot use HDMI via PC, TV or set-top box. The sound quality is natural, smooth and charming, start listening to all your music with very good precision. The D90 is also equipped with AKM AK4118 chip, which covers all S/PDIF connections, which is able to decode PCM up to 24-bit / 192 kHz, completely free of noise and interference. It takes input signals via optical, coaxial and AES input ports.

D90 offers following inputs: USB-B (XMOS), optical, coaxial, AES, IIS and Bluetooth 5.0. USB and IIS inputs support up to PCM32bit / 768 kHz and DSD512 Native. Optical, coaxial and AES inputs support up to PCM24bit / 192 kHz.

Bluetooth 5.0 support with Qualcomm flagship chip

Topping D90 is equipped with the flagship Bluetooth Qualcomm chip, CSR 8675, offering a strong and stable Bluetooth connection that is delay-free and supports all codecs such as aptX, aptX HD, aptX LL, AAC, LDAC and much more. Offers high-resolution 24-bit / 96kHz LDAC over a wireless connection. Supporting LDAC and aptX HD, the Topping D90 delivers crystal-clear audio without delays.

Wide dynamic range and excellent signal-to-noise ratio

Topping D90 provides a wide dynamic range of 127dB and an amazing signal-to-noise ratio – 127dB, which provides greater extensions at the lower and higher ends and amazing crystal-clear background, without any signs of noise.

Dual output ports

Topping D90 is equipped with dual output sockets, XLR outputs offer 4Vrms output power at 0dBps, and the other output port, an unbalanced RCA offers 2Vrms output power at 0dBps. It provides enough power to power any of your demanding devices, whether it’s headphones or a speaker system. The D90 can send a signal through both output ports at the same time, so you can use multiple tools at the same time. It is equipped with a volume control function, so it can be used both as a digital-to-analog converter and as a pre-amplifier converter. The volume control can be turned off so that the D90 works only as a digital-to-analog converter.

Remote included

D90 is equipped with a remote control that can be used for various functions such as on / off, mute, volume control, input type change, DAC filter type change or OLED display brightness adjustment.

Specifications

  • Product type: DAC
  • DAC Chip: AKM AK4499
  • USB Interface: XMOS XU208
  • SPDIF Interface: AK4418
  • BluetoothL 5.0 / Apt-X HD / LDAC
  • Inputs:
    • 1x I2S LVDS (HDMI)
    • 1x Optical Toslink
    • 1x USB-B (XMOS)
    • 1x Coaxial S/PDIF
    • 1x AES/EBU
  • 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 / DSD up to DSD512
    • Coaxial, Optical, AES : PCM up to 24bit 192kHz
  • Outputs:
    • 1x Balanced XLR
    • 1x Single-Ended RCA
  • Output voltage:
    • RCA : 2Vrms @ 0dBFS
    • XLR : 4Vrms @ 0dBFS
  • Dynamic range (A-Weighting): 128dB

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