●Ultra-high Performance NFCA modules A50 III uses the same NFCA module from A50s. Voltage Current hybrid feedback architecture along with UHGF technology provides excellent DCand AC performance. High output current drive capability allows the amp driving low impedance headphones with ease. ●Full aluminum case A50 III has a unique integrated design. It 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 III a smooth appearance and superior strength. It is not only the masterpiece of craftsmanship, but also the perfect combination of art and technology. ●Single-end / Balanced application The A50 III has 6.35mm single-ended and 4.4mm balanced headphone jack, as well as RCA single-ended and TRS balanced input. It is simple and efficient for you to choose different input and output combinations. ●Wide range of adaptation to headphones The A50 III 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 III ensures that most headphones can maximize their performance. It maintains a low distortion rate of less than 0.1% even at high power. ●12V Trigger The A50 III is equipped with 12V Trigger input, which supports switching on and off synchronously with other devices. ●Perfect partner—D50 III The D50 III and A50 III have the same design language. This combination has unique metallic aesthetics no matter how its placed. And they meet the needs of most headphones and active speakers. The A50 III can also be switched on and off with the D50 III via 12V Trigger.
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Description
TOPPING A50 III - Fantasy HPA for Desktop
Attribute
Measured: 12.5cm x 14.0cm x 2.6cm; Weight: 495g
Power input: DC 15V/1A @DC base 5.5*2.1
Other connectors: 12V Trigger In (3.5mm jack) / Type-C FW port
Voltage Current hybrid feedback architecture along with UHGF technology provides excellent performance. High output current drive capability allows the amp driving low impedance headphones with ease.
Upper limit of performance was limited by APX555B
THD+N <0.00006%
DNR >144dB
Single-end / Balanced Application
The A50 III has 6.35mm single-ended and 4.4mm balanced headphone jack, as well as RCA SE and TRS BAL input. It is simple and efficient for you to choose different input and output combinations.
Wide Range of Adaptation to Headphones
The A50 III 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 III ensures that most headphones can maximize their performance. It maintains a low distortion rate of less than 0.1% even at high power.
Full Aluminum Case
A50 III has a unique integrated design. CNC machining provides excellent electromagnetic shielding while giving the A50 III a smooth appearance and superior strength.
The A50 III is equipped with 12V Trigger input, which supports switching on and off synchronously with other devices.
Perfect partner—D50 III
The D50 III and A50 III have the same design language. This combination has unique metallic aesthetics no matter how its placed. And they meet the needs of most headphones and active speakers. The A50 III can also be switched on and off with the D50 III via 12V Trigger.
A50 III Headphone Amplifier Specifications (SE OUT)
THD+N @1kHz A-wt
SE IN: <0.00006% @Output=500mW(32Ω) / <0.00006% @Output=80mW(300Ω); BAL IN: <0.00007% @Output=500mW(32Ω) / <0.00006% @Output=80mW(300Ω)
THD @20-20kHz 90kBW
SE IN: <0.0002% @Output=500mW (32Ω) / <0.0001% @Output=80mW(300Ω); BAL IN: <0.0005% @Output=500mW(32Ω) / <0.0003% @Output=80mW(300Ω)
SNR @MAX OUT 1kHz A-wt
SE IN: 141dB; BAL IN: 136dB
Dynamic Range @1kHz A-wt
SE IN: 141dB; BAL IN: 136dB
Frequency Response
SE IN: 20Hz-40kHz(±0.05dB) / 10Hz-100kHz(±0.1dB); BAL IN: 20Hz-40kHz(±0.1dB) / 10Hz-100kHz(±0.5dB)
Output Level
SE IN: 21Vpp @G=L / 21Vpp @G=M / 21Vpp @G=H; BAL IN: 21Vpp @G=L / 21Vpp @G=M / 21Vpp @G=H
AP measured noise level @A-wt
SE IN: <0.7uVrms @G=L / <0.7uVrms @G=M / <1.2uVrms @G=H; BAL IN: <0.7uVrms @G=L / <0.7uVrms @G=M / <1.1uVrms @G=H
Actual noise level* @A-wt
SE IN: <0.3uVrms @G=L / <0.3uVrms @G=M / <1.0uVrms @G=H; BAL IN: <0.3uVrms @G=L / <0.3uVrms @G=M / <1.0uVrms @G=H
Input sensitivity
SE IN: 13Vrms @G=L / 8.0Vrms @G=M / 1.9Vrms @G=H; BAL IN: 9.2Vrms @G=L / 8.0Vrms @G=M / 1.9Vrms @G=H
Gain
SE IN: -12.0dB @G=L / 0dB @G=M / 11.9dB @G=H; BAL IN: -12.0dB @G=L / 0dB @G=M / 11.7dB @G=H
Output Impedance
<0.1Ω
Input Impedance
SE IN: 10.0kΩ @G=L / 2.5kΩ @G=M / 2.5kΩ @G=H; BAL IN: 2.0kΩ @G=L / 2.0kΩ @G=M / 2.0kΩ @G=H