Topping A50 III Headphone Amplifier NFCA modules 12V Trigger Fantasy HPA for Desktop (Silver)

Specifications: SEIN/SE OUT BAL IN/SE OUT SE IN/BAL OUT BAL IN/BAL OUT THD+N <0.00006% <0.00007% <0.00007% <0.00012% @1kHzA-wt @Output=500mW (32Ω) @Output=500mW (32Ω) @Output=2000mW (32Ω) @Output=2000mW (32Ω) <0.00006% <0.00006% <0.00006% <0.00008% @Output=80mW (300Ω) @Output=80mW (300Ω) @Output=320mW (300Ω) @Output=320mW (300Ω) THD <0.0002% <0.0005% <0.0002% <0.0002% @20-20kHz 90kBW @Output=500mW (32Ω) @Output=500mW (32Ω) @Output=2000mW (32Ω) @Output=2000mW (32Ω) <0.0001% <0.0003% <0.0001% <0.0001% @Output=80mW (300Ω) @Output=80mW (300Ω) @Output=320mW (300Ω) @Output=320mW (300Ω) SNR 141dB 136dB 144dB 137dB @MAX OUT 1kHz A-wt Dynamic Range 141dB 136dB 144dB 137dB @1kHzA-wt Frequency Response 20Hz-40kHz (±0.05dB) 20Hz-40kHz (±0.1dB) 20Hz-40kHz (±0.05dB) 20Hz-40kHz (±0.05dB) 10Hz-100kHz (±0.1dB) 10Hz-100kHz (±0.5dB) 10Hz-100kHz (±0.1dB) 10Hz-100kHz (±0.1dB) Output Level 21Vpp @G=L 21Vpp @G=L 18Vpp @G=L 18Vpp @G=L 21Vpp @G=M 21Vpp @G=M 42Vpp @G=M 42Vpp @G=M 21Vpp @G=H 21Vpp @G=H 42Vpp @G=H 42Vpp @G=H AP measured noise level <0.7uVrms @G=L <0.7uVrms @G=L <0.9uVrms @G=L <0.9uVrms @G=L @A-wt <0.7uVrms @G=M <0.7uVrms @G=M <0.9uVrms @G=M <0.9uVrms @G=M <1.2uVrms @G=H <1.1uVrms @G=H <2.1uVrms @G=H <2.1uVrms @G=H Actual noise level * <0.3uVrms @G=L <0.3uVrms @G=L <0.7uVrms @G=L <0.7uVrms @G=L @A-wt <0.3uVrms @G=M <0.3uVrms @G=M <0.7uVrms @G=M <0.7uVrms @G=M <1.0uVrms @G=H <1.0uVrms @G=H <2.0uVrms @G=H <2.0uVrms @G=H Input sensitivity 13Vrms @G=L 9.2Vrms @G=L 13Vrms @G=L 9.2Vrms @G=L 8.0Vrms @G=N 8.0Vrms @G=M 7.8Vrms @G=M 7.8Vrms @G=M 1.9Vrms @G=H 1.9Vrms @G=H 1.9Vrms @G=H 1.9Vrms @G=H Gain -12.0dB @G=L -12.0dB @G=L -6.0dB @G=L -6.0dB @G=L 0dB @G=M 0dB @G=M 6.0dB @G=M 6.0dB @G=M 11.9dB @G=H 11.7dB @G=H 17.9dB @G=H 17.7dB @G=H Output Impedance <0.1Ω <0.1Ω <0.2Ω <0.2Ω Input lmpedance 10.0kΩ @G=L 2.0kΩ @G=L 10.0kΩ @G=L 2.0kΩ @G=L 2.5kΩ @G=M 2.0kΩ @G=M 2.5kΩ @G=M 2.0kΩ @G=M 2.5kΩ @G=H 2.0kΩ @G=H 2.5kΩ @G=H 2.0kΩ @G=H Output Power 2150mWx2 @16Ω THD+N<0.1% 3500mW x 2 @32Ω THD+N<0.1% 1400mW x 2@32ΩTHD+N<0.1% 2700mW x 2 @64Ω THD+N<0.1% 190mW x 2@300Ω THD+N<0.1% 760mW x 2@300Ω THD+N<0.1% 100mW x 2@600Ω THD+N<0.1% 395mW x 2@600Ω THD+N<0.1% Load lmpedance >8Ω * Note: The actual noise level is obtained by boosting the noise of A50 III by 40dB using a low noise amplifier in front of the APx555B then dividing the measured noise by 100 times.

• Ultra-high Performance NFCA modules. A50 Ill uses the same NFCA(Nested Feedback Composite Amplifier) module from A50s. Voltage Current hybrid feedback architecture along with UHGF(UltraHigh Gain Feedback) technology provides excellent DC and AC performance. High-output current drive capability allows the amp to drive low-impedance headphones with ease.
• Full aluminum case. A50 Ill has a unique integrated design. lt has gone through dozens of processes of planning, design and precision machining from solid aluminum bricks. CNC machining provides excellent electromagnetic shielding while giving the A50 Ill a smooth appearance and superior strength. lt is not only the masterpiece of craftsmanship, but also the perfect combination of art and technology.
• Single-end / Balanced application. The A50 Ill has a 6.35mm single-ended and 4.4mm balanced headphone jack, as well as RCA single-ended and TRS balanced input. t is simple and efficient for you to choose different input and output combinations.
• Wide range of adaptation to headphones. The A50 lll has three gain selections for all types of headphones. With low noise of 0.3uVrms, IEMs will not be disturbed by any noise floor.
• Powerful Output. With a powerful output of 3500mW x 2, the A50 Ill ensures that most headphones can maximize their performance. t maintains a low distortion rate of less than 0.1% even at high power.
• Perfect partner--D50III. The D50III and A50III have the same design language. This combination has unique metallic aesthetics no matter how it's placed. And they meet the needs of most headphones and active speakers. The A50 lll can also be switched on and off with the D50 lll via 12V Trigger.