Topping NX4 DSD DAC/Ampsearch

Topping NX4 DSD DAC/Amp

Topping NX4 DSD DAC/Amp

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High-Res Audio, Long Playback Time

A great pairing for laptops and smartphones, the Topping NX4 DSD is a compact DAC/amp loaded with impressive specs. It’s equipped with the well-regarded Sabre ES9038Q2 DAC, along with an XU208 USB bridge, and it supports some of the highest-resolution audio—including 32 bit/768 kHz, DSD256 (DoP), and DSD512 (native). For easy use when you’re on the go, the NX4 DSD comes with rubber bands and Velcro feet to attach to your smartphone or digital music player. It provides 28 hours of playback when the headphone amp is used and 7.5 hours of playback when the DAC and amp are used together. Featuring a full aluminum shell, the unit is smaller than your average phone and weighs just over 5 ounces. 

Note: At checkout, choose black or silver. 

Specs

Headphone Amplifier

  • THD+N (A-weighted): <0.0009% at 1 kHz output = 140 mW (32 ohms), <0.0037% at 20 Hz–20 kHz output = 140 mW (32 ohms), <0.00046% at 1 kHz output = 57 mW (300 ohms), <0.0005% at 20 Hz–20 kHz output = 57 mW (300 ohms)
  • SNR (A-weighted): >120 dB at 1 kHz
  • Frequency response: 20 Hz–100 kHz (+/- 0.55 dB)
  • Output level: 8.3 Vpp at 32 ohms gain = L, bass = off; 16.4 Vpp at 300 ohms gain = L, bass = off 
  • Noise: <2.5 uVrms at gain = L, <6.4 uVrms at gain = H
  • Channel crosstalk: -96 dB at 1 kHz
  • Channel balance: 0.038 dB
  • IMD CCIF: -100 dB at 300 ohms, -94 dB at 32 ohms, CCIF (19.5 k/1k)
  • IMD SMPTE: -103 dB at 300 ohms, -96 dB at 32 ohms, SMPTE4:1; -108 dB at 300 ohms, -98 dB at 32 ohms, SMPTE1:1
  • Output impedance: <0.4 ohms
  • Gain: 0 dB / 8.8 dB
  • Bass: 0 dB / 0.4 dB (70 Hz)
  • Output power: 293 dB x 2 at 32 ohms, THD+N <1%; 114 mW x 2 at 300 ohms, THD+N <1%
  • Adapter impedance: 16–300 ohms

DAC (Line Out)

  • Compatible: 44.1–768 kHz / 16–32 bit, DSD 64–256 (DoP), DSD 64–512 (native)
  • THD+N (A-weighted): <0.0008% at 1 kHz
  • SNR (A-weighted): >119 dB at 1 kHz
  • Frequency response: 20 Hz–20 kHz (+/- 0.041 dB)
  • Output level: 2 Vrms at 0 dBFS
  • Noise: <2.2 uVrms
  • Channel crosstalk: -108 dB at 1 kHz

Physical

  • Power input: DC 5V/1.5A (PC’s USB 0.5A is okay)
  • Line in/out: 3.5mm
  • Headphone output: 3.5mm
  • USB DAC input: Micro-USB
  • Battery capacity: 2,400 mAh
  • Charge time: <4 hrs
  • Playback time: >28 hrs (headphone amp mode), >7.5 hrs (USB DAC mode)
  • Power LED: Blue light (lights red to indicate low battery)
  • Charge LED: Light red when charging, light green when charge is complete
  • DAC LED: Blue means valid connection and playing PCM format, red means playing DSD format
  • Dimensions: 4.3 x 2.7 x 0.6 in (11 x 6.8 x 1.4 cm)
  • Weight: 5.2 oz (148 g)

Included

  • Micro-USB to NX4 DSD 
  • Type-C to NX4 DSD Cable
  • Rubber pad
  • USB charging cable
  • 3.5mm cable
  • Rubber band
  • Velcro feet
  • User manual

Shipping

All orders will be shipped by Massdrop.

Estimated ship date is Oct 11, 2018 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.

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