Topping DX3 Pro+ DAC & Headphone Amplifier

Specifications

• Bluetooth 5.0: Qualcomm’s QCC5125 Chip
• Decoding Chip: ES9038Q2M
• USB In
• PCM: 44.1kHz-768kHz / 16bit-32bit
• DSD (Native): DSD64-DSD512
• DSD (DoP): DSD64-DSD256
• COAX / OPT in
• PCM: 44.1kHz-192kHz / 16bit-24bit
• DSD (Native): Not Supported
• DSD (DoP): DSD64
• Bluetooth In
• PCM: AAX, SBC, aptX, aptX LL, aptX HD, LDAC
• DSD (Native): Not Supported
• DSD (DoP): Not Supported
• THD+N @1kHz (A-wt): <0.00015%
• THD @20-200kHz (90kBW): <0.00020%
• SNR: 122dB
• DNR: 122dB
• Frequency response 
• 20Hz-20kHz (±0.3dB)
• 20Hz-40kHz (±0.7dB)
• Output level: 2.1Vrms @0dBFS
• Noise (A-wt): <1.8uVrms
• Channel crosstalk @1kHz: -137dB
• Channel balance: 0.3dB
• Output impedance: 20Ω

DX3 Pro+ Headphone Amplifier Specs

• THD+N @1kHz (A-wt)
• <0.00015% @Output=1500mW (32Ω)
• <0.00013% @Output=160mW (300Ω)
• THD @20-200kHz (90kBW)
• <0.0005% @Output=1500mW (32Ω)
• <0.0005% @Output=160mW (300Ω)
• SNR: 120dB
• DNR: 120dB
• Frequency response 
• 20Hz-20kHz (±0.3dB)
• 20Hz-40kHz (±0.7dB)
• Output level
• 5.5Vpp @G=L
• 21.5Vpp @G=H
• Noise (A-wt) 
• <2.1uVrms @G=L
• <7.0uVrms @G=H
• Channel crosstalk @1kHz: -90dB
• Gain
• 6dB (Vrms/FS) @G=L
• 19dB (Vrms/FS) @G=H
• Output impedance: <0.1Ω
• Output power
• 1800mW x2 @32Ω THD+N <0.1%
• 900mW x2 @64Ω THD+N <0.1% 
• 250mW x2 @300Ω THD+N <0.1%
• Adapter impedance: >8Ω 
• Dimensions: 6.5” x 4.7” x 1.5” (16.5 x 12 x 4 cm)