Nuprime DAC-9X DAC + headphone amplifier and preamp

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Nuprime DAC-9X DAC + headphone amplifier and preamp

Preamp


To meet the requirement of customers who want to eliminate extra components in their system, a preamp capable of driving the power amplifier is an essential part of the design.

The DAC-9X high-end preamp features include:
  • Analog volume control design using a low noise and low distortion resistance ladder circuit similar to switch-resistor network.
  • Digital controlled dual-mono analog shunt to ground volume control achieves zero added noise or distortion.
  • Individually adjustable volume on each input for precise source level matching.
  • The integrated preamp eliminates the need for more analog signal cables and connectors’ signal breakpoints.
The Heart

As the heart of an audio system, the DAC-9X supports an extensive number of inputs and formats. Dual ESS Technology 32-bit audio DAC ESS9028Q2M independently decode left and right channels improve channel separation and reducing overall noise. The Vishay professional film MELF resistors provide excellent sound quality.

Power Circuit

The AC hum is kept to a minimum by using a low noise power supply with antivibration treatment. The rest of the onboard power circuit is designed to minimize noise as well.

Native MQA Decoding

The DAC-9X includes MQA technology, which enables you to playback MQA audio files and streams, delivering the sound of the original master recording. The front panel LED glows green or blue to indicate that the unit is decoding and playing an MQA stream or file, and denotes provenance to ensure that the sound is identical to that of the source material. It glows blue to indicate it is playing an MQA Studio file, which has either been approved in the studio by the artist/producer or has been verified by the copyright owner. The DAC-9X LED glows magenta to indicate that the unit is rendering an MQA stream or file. This delivers the final unfold of the MQA file. For more about MQA, please visit: https://www.mqa.co.uk/

Other notable features:
  • NuPrime SRC IC chip (co-developed with IC vendor) provides DSP processing where Input signals are up-sampled to megahertz before down converted to the targeted sampling rate with ultra-low jitter and distortion.
  • Extension port for Bluetooth receiver and WiFi audio streamer (optional).
  • Full microprocessor control with memory retention.
  • Supports DSD native playback by ASIO2.1 and DoP method.
  • Ultra- low-noise JFETs in the input stage for the lowest possible noise floor.
  • Individually adjustable volume on each input for precise level matching of sources.
  • Asynchronous transfer mode.
  • Very low power consumption on Standby Mode.
Using Bluetooth and WiFi Audio Receivers and Dongles

NuPrime defined an USB Type-A port to carry S/PDIF data and 5V power for connecting to external wireless audio receiver using just one standard USB cable. The NuPrime Omnia WR-1, BTR-HD, Stream Mini, and Stream Mini DAC wireless receivers have a micro USB port that is compatible this specification. This allow a standard off-the-shelf USB-A to micro USB cable to be used for power for the receiver as well as wireless audio data transfer in S/PDIF format.

Specifications

Inputs: Rear panel
  • USB: Type B 2.0 Hi-Speed, Windows OS: data stream up to 384KHz/24Bit and Native DSD 256.
  • USB: Type B 2.0 Hi-Speed, Mac / Linux OS: data stream up to 384KHz/24Bit and DOP DSD 128.
  • IIS/DSD: Supports PCM 44.1KHz ~ 384KHz/32Bit and DSD 64 ~ DSD 256 data streams.
  • OPTICAL: Supports PCM 44.1KHz ~ 192KHz/24Bit and DOP 64.
  • COAXIAL: Supports PCM 44.1KHz ~ 384KHz/24Bit and DOP 64 and 128.
  • RCA: Up to 1 Vrms audio signal.
  • EXTENSION: Supports PCM 44.1KHz ~ 192KHz/24Bit.
Outputs: Front panel
  • TRS 6.3mm headphone out
  • Output power: 1700 mW, 32 ohms, <0.01% THD (watts per channel).
  • Output power: 135 mW, 600 ohms, <0.005% THD (watts per channel).
Outputs: Rear panel
  • RCA unbalanced outputs: 4 Vrms
  • XLR balanced outputs: 8 Vrms
  • Optical S/DPIF out (PCM up to 192KHz supporting DoP format DSD64)
  • Frequency response: 20 Hz – 20 KHz / ±0.3 dB.
  • SNR: > 110 dB.
  • THD+N: < 0.0005%.
  • Dimensions: 235 mm W x 281 mm D x 60 mm H (including feet)
  • Weight: 2.5Kg
  • Worldwide AC voltage: (90VAC~130VAC // 210VAC~ 250VAC) With Voltage Select Switch
  • AC Fuse: Slow-blow, 2.5A, 250VA
You receive a 2 year warranty from the date of purchase for all of our high quality hifi-products.

If you observe any problem while using the product, you have the possibility to contact our friendly service team.

You can also easily manage your guarantee concern – without being obliged to – under the section My Account.

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