Description Topping A50 III Desktop Headphone Amplifier The Topping A50 III Desktop Headphone Amplifier features the NFCA (Nested Feedback Composite Amplifier) module and a 3-step gain switch, the A50 III drives a wide range of headphones and IEMs with world-class clarity. Features NFCA module for superior sound quality CNC unibody design for durability and electromagnetic shielding Multiple input and output options for versatile connectivity Three gain settings to accommodate all types of headphones Powerful output of 3500mW x2 ensures wide compatibility Low distortion for clear, detailed sound 12V trigger for synchronized operation with other devices Ultra-high performance in every note The heart of the A50 III is the advanced NFCA (Nested Feedback Composite Amplifier) module, shared with its predecessor, the A50s. This cutting-edge technology ensures stellar DC and AC performance, driving even low-impedance headphones without breaking a sweat. Robust machined aluminum shell Precision is key in the creation of the A50 III, which boasts a machined shell meticulously carved from a solid block of aluminum. This process not only offers superior electromagnetic shielding, but provides a smooth, refined look and exceptional strength. Putting the “I/O” in audio Offering both 6.35mm single-ended and 4.4mm balanced headphone jacks, alongside RCA and TRS inputs, the A50 III adapts seamlessly to your audio setup. Its versatile connection options ensure you can easily switch between input and output combinations, however you like to listen. Calling all cans and IEMs With three gain settings and an ultra-low noise floor, the A50 III caters to any headphone, from sensitive IEMs to power-hungry over-ears. Its robust output ensures your music always sounds its best, free from distortion even at peak levels. Purely powerful Featuring a powerful output of 3500mW x2 @32Ω, the A50 III guarantees your headphones reach their full potential. Combined with its low distortion rate, this amp delivers clean, powerful sound that stays true to the original recording. Synchronized and simplified The 12V trigger output allows the A50 III to power on and off in sync with your other devices, including its perfect match, the D50 III. What’s included TOPPING A50 III 15V DC adapter 6.35 to 3.5mm adapter Product information Specifications Maximum specs THD N @1kHz (A-wt): <0.00006% THD @20-20kHz 90kBW: <0.0001% SNR @Max Out 1kHz A-wt: 144dB Dynamic range @1kHz A-wt: 144dB Frequency response: 20Hz – 40kHz (±0.1dB) / 10Hz – 100kHz (±0.5dB) Output level: Low gain: 21Vpp Medium gain: 21Vpp High gain: 21Vpp AP measured noise level @A-wt Low gain: <0.7uVrms Medium gain: <0.7uVrms High gain: <1.1uVrms Actual noise level @A-wt Low gain: <0.3uVrms Medium gain: <0.3uVrms High gain: <1.0uVrms Input sensitivity Low gain: 9.2Vrms Medium gain: 8Vrms High gain: 1.9Vrms Gain Low gain: -12dB Medium gain: 0dB High gain: 11.7dB Output impedance: <0.2Ω Input impedance Low gain: 2kΩ Medium gain: 2kΩ High gain: 2kΩ Output power 3500mW x2 @32Ω THD N<0.1% Load impedance: >8Ω
