like new, all functions work properly.Please check the exterior through the attached photo.It is a small but clear, powerful and decent performing dac/amp. The Topping NX4 DSD is a compact DAC/Amp that is easily portable and can be used with laptops or smartphones. It has the Sabre ES9038Q2M DAC and XU208 USB bridge that supports high-res audio that includes 32 bit/768 kHz, DSD256 (DoP), and DSD512 (native). The amp provides 28 hours of playback, while the DAC and amp together provide 7.5 hours of playback. Specs:Power Input: DC 5V/1.5A (PC’s USB 0.5A is okay)Line In/Out: 3.5mmHeadphone Output: 3.5mmUSB DAC Input: Micro-USBBattery Capacity: 2,400 mAhCharge Time: <4 hrsPlayback 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 completeDAC LED: Blue means valid connection and playing PCM format, red means playing DSD formatAmpTHD+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 kHzFrequency 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 = HChannel crosstalk: -96 dB at 1 kHzChannel balance: 0.038 dBIMD 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, SMPTE1:1Output impedance: <0.4 ohmsGain: 0 dB / 8.8 dBBass: 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 ohmsDACCompatible: 44.1–768 kHz / 16–32 bit, DSD 64–256 (DoP), DSD 64–512 (native)THD+N (A-weighted): <0.0008% at 1 kHzSNR (A-weighted): >119 dB at 1 kHzFrequency response: 20 Hz–20 kHz (+/- 0.041 dB)Output level: 2 Vrms at 0 dBFSNoise: <2.2 uVrmsChannel crosstalk: -108 dB at 1 kHz

ToppingNX4DSD DAC ESS Sabre 9038Q2M SNR 120db DSD Support Native ( 64 / 512 ) & DoP ( 64 / 256 ) Boost Gain / BassCharging Port Separate Yes ( does not drain your mobile ) Cables Included USB to MicroUSB, MicroUSB to MicroUSB, Mobile to MicroUSB, mini-jack to mini-jack Perceived Sound Quality dry, accurate, tight / controlled bass, slightly cold Privatverkauf ohne jegliche EU-Garantien, ohne Gewährleistungen und eine Rücknahme wird ebenfalls ausdrücklich ausgeschlossen! Item(s) sold as is / no guarantees/no returns.

Like new, lightly used Topping NX4, DSD dac. I used this as a dac connected to my PC, but it also works well connected to a phone or headphones.

Topping DSD NX4 Compact DAC/AMPEXCELLENT REVIEWS! WELL REVIEWED!The Topping NX4 DSD is a compact DAC/Amp that is easilyportable and can be used with laptops or smartphones. It has the SabreES9038Q2M DAC and XU208 USB bridge that supports high-res audio that includes32 bit/768 kHz, DSD256 (DoP), and DSD512 (native). The amp provides 28 hours ofplayback, while the DAC and amp together provide 7.5 hours of playback.SPECS:- 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), >7.5hrs (USB DAC mode)- Power LED: Blue light (lights red to indicate low battery)- Charge LED: Light red when charging, light green whencharge is complete- DAC LED: Blue means valid connection and playing PCMformat, red means playing DSD formatAMP:-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 mWx 2 at 300 ohms, THD+N <1%- Adapter impedance: 16–300 ohmsDAC- 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

Topping NX4 DSD headphone DAC/amp in original box with original accessories. Works perfectly.

This Topping NX4 DSD portable DAC amp for headphones is a game-changer for all music lovers out there! Offering high-quality sound and amazing performance, this sleek and stylish device is perfect for those who are always on-the-go. Great battery life and portability. Have barely used this and it is in great condition! Tech specs: Input range micro-USB: 16 – 32 bit / 44.1 – 384 kHz PCM, DSD64/128/256 as DoP, DSD 512 native 3.5 mm jack (when used as amplifier only) Suitable headphones impedance16 – 300 ? Output impedance< 0.4 ? Maximum output power: 293 mW (32 ?), 114 mW (300 ?) Frequency response: 20 – 100,000 Hz (± 0.55 dB) THD+N (@1 kHz) < 0.0009% (32 ?, 1 kHz, 140 mW) < 0.0037% (32 ?, 20 – 20,000 Hz, 140 mW) < 0.00046% (300 ?, 1 kHz, 57 mW) < 0.0005% (300 ?, 20 – 20,000 Hz, 57 mW) SNR> 120 dB Crosstalk-96 dB

Topping NX4 DSD Headphone Amp DAC Portable Rechargeable with Line Output.

Topping NX4 DSD Headphone Amp DAC Portable Rechargeable with Line Output Used only a handful of times! PCM768, DSD512DSD: Native,DOPAnalog input: 1 x 3.5mm (share with analog output)Analog output: 1 x 3.5mm (share with analog input)Headphone output: 1 x 3.5mmPlayback time: Approx 28 hours (only headphone amp)Playback time: Approx 7.5 hours (USB DAC + headphone amp)Headphone output: 293mWDistortion: 0.0009% (140mW)Noise floor: 2.5uV 6.5uV293mW x 2 @ 32?114mW x 2 @ 300?Decoding SNR: 119dB16-32bit / 44.1-768kHZ DSD64-DSD256Dop DSD64-512 (native)Net weight: Approx 155g (unit only)Dimensions: Approx 11cm x 6.8cm x 1.4cmSuitable Headphone Impedance: 16-300?

Topping NX4 DSD XMOS-XU208 Chip DAC ES9038Q2M Chip Portable USB Headphone Amp Decoder Power Amplifier (Silver)Perfect condition! Opened but never used. All original accessories included. I bought this direct from www.shenzhenaudio.com but havent used it. Im decluttering now so this has to go. A hifi guru recommended I use this with the headphones Im also selling to get fantastic sound quality via your mobile phone. You can see the headphones at https://www.ebay.co.uk/itm/166148571477. Ask for discount if you want to buy both! Supports wide audio format including 16-32bit/44.1-768kHz, DSD64-DSD256(Dop), DSD64-512(native).Can play almost all kinds of audio source because its compatible with 32bit/768kHz DSD256(Dop) and DSD512(native)Output resistance less than 0.4 OhmsNoise as low as 2.5uV(0dB) and 6.5uV(8.8dB)Specification?Full aluminium shell28 hours playback time for headphone amp and 75 hours playback time for USB DAC + headphone ampDSD:PCM768?DSD512DSD:Native,DOPAnalog input:1 x 3.5mm(share with analog output)Analog output:1 x 3.5mm(share with analog input)Headphone output:1 x 3.5mmPlayback time:Approx 28 hours (only headphone amp)Approx 7.5 hours (USB DAC + headphone amp)Headphone output: 293mWDistortion: 0.0009% (140mW)Gain: 0dB.8.8dBNoise floor: 2.5uV 6.5uV293mW x 2 @ 32?114mW x 2 @ 300?Decoding SNR: 119dB16-32bit / 44.1-768kHZ DSD64-DSD256Dop DSD64-512 (native)Net weight: 148g (unit only)Dimensions:Approx 11CM x 6.8CM x 1.4CMSuitable Headphone Impedance:16-300? All the images with a wooden background are of the actual item. The last 5 photos are borrowed from the product page on the Shenzen website.

Topping NX4 DSD Hi Res Audio Portable DAC Amp for headphones. USB and line in. Headphone and line out. Includes all accessories, straps and cables. Internal battery so no power drain when using it with your mobile. Great condition - hardly used. Sent fully insured and tracked.