Up for sale is my Topping NX4 DSD Dac/Amp. I am the original owner. It is Mint Electronically and Near Mint cosmetically .I am selling it as I upgraded my travel system. It will come with all paperwork, accessories, & Original Box. . Boxed US Shipping is FREE. I can also ship Internationally. There is a return option- the buyer pays the return shipping. Thanks,Amadeus

Works great!

Topping NX4 DSD DAC/AMP for Phones Laptops PCs Headphone Amplifier . ????????? ??????: Used. ?????????: USPS Ground Advantage.

Brand new just open box for pictures only! Complete set U3

Just brand new open box item Complete set What you see in pictures is what you gonna get T3

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

Brand new just open box for pictures only! Complete set U3

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

Brand new just open box for pictures only! Complete set U3

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

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

Brand new just open box for pictures only! Complete set U3

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

Brand new just open box for pictures only! Complete set U3

Amplify your sound with the Topping NX4 DSD DAC/AMP, a high-quality digital amplifier designed for phones, laptops, and PCs. With two audio inputs and two audio outputs, this amplifier offers a powerful and clear audio experience for any music lover. Its sleek black design adds a touch of style to any setup. The Topping NX4 DAC/AMP boasts a range of features, including digital technology and a headphone jack, making it perfect for anyone who wants to enhance their audio experience. Made in China with high-quality materials, this amplifier is compatible with cables and offers a reliable and efficient performance. Upgrade your audio setup today with the Topping NX4 DAC/AMP.

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

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

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

Topping NX4DSD DAC ESS Sabre 9038Q2M SNR 120db DSD Support Native ( 64 / 512 ) & DoP ( 64 / 256 ) Boost Gain / Bass Charging Port Separate Yes ( does not drain your mobile ) Cables Included USB to MicroUSB, MicroUSB to MicroUSB, Mobile to MicroUSB, mini-jack to mini-jack 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, 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

Elevate your audio experience with the Topping NX4 DAC/AMP for phones, laptops, and PCs. This digital amplifier is designed to provide exceptional sound quality with its 2-channel and 2-input capabilities. Its silver color gives it a sleek and modern look that will fit seamlessly with any audio setup. The TRS/Audio Jack audio inputs ensure versatility and compatibility with a wide range of devices, while its model, nx4, promises reliable and high-quality performance. With the Topping NX4 DAC/AMP, you can enjoy your music, movies, and games at their best without worrying about the condition of the device.

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

Elevate your audio experience with the Topping NX4 DAC/AMP for phones, laptops, and PCs. This digital amplifier is designed to provide exceptional sound quality with its 2-channel and 2-input capabilities. Its silver color gives it a sleek and modern look that will fit seamlessly with any audio setup. The TRS/Audio Jack audio inputs ensure versatility and compatibility with a wide range of devices, while its model, nx4, promises reliable and high-quality performance. With the Topping NX4 DAC/AMP, you can enjoy your music, movies, and games at their best without worrying about the condition of the device.

Elevate your audio experience with the Topping NX4 DAC/AMP for phones, laptops, and PCs. This digital amplifier is designed to provide exceptional sound quality with its 2-channel and 2-input capabilities. Its silver color gives it a sleek and modern look that will fit seamlessly with any audio setup. The TRS/Audio Jack audio inputs ensure versatility and compatibility with a wide range of devices, while its model, nx4, promises reliable and high-quality performance. With the Topping NX4 DAC/AMP, you can enjoy your music, movies, and games at their best without worrying about the condition of the device.