























TOPPING
TOPPING - A50s
Desktop Headphone Amplifier24 Hours
Delivery
Chi-Fi
Excellence
Ideal for
Indoor Use
4.4mm
Balanced Output
Connect With
RCA
Upto 3500mW X 2 @32Ω
Power Output
Topping A50s is a proficient solid-state headphone amplifier. It is neutral and balanced, fast, detailed, clean and transparent. Most importantly, the A50s is powerful and can drive the most demanding headphones.

FROM HEADPHONES TO IEMS THE PRO-PERFORMANCE TOPPING A50S CAN DRIVE ALMOST ANYTHING
NFCA (Nested Feedback Composite Amplifier) modules from the TOPPING A90 is used in the all-new TOPPING A50s as well. These nested-composite amplifier modules extend the bandwidth at high gain, increase slew rates, and reduce distortion. Experience the best DC and AC performance with the Voltage Current hybrid feedback architecture and UHGF (Ultra High Gain Feedback). The A50s offers a high output current that can drive even low impedance headphones with absolute ease. With noise as low as 0.3uV, the dynamic range is as high as 144dB that too with no audible noise. You can use the TOPPING A50s with speakers too.



A METICULOUSLY DESIGNED HEAT-REDUCING ALUMINIUM CASE
The A50s comes with a meticulously crafted aluminium case. Its outer casing consists of an aluminium brick which is flawlessly designed with CNC precision machining. The power supply usually produces a lot of heat and to get rid of it, the outer casing comes with a thermal conductive column. This column effectively dissipates heat from the power supply and the OP-AMP.



DRIVE A WIDE RANGE OF HEADPHONES WITH SINGLE ENDED AND BALANCED OUTPUTS
When both channels of the TOPPING A50s are driven, it has a high voltage swing of 42Vp-p and 3500 mW of power per channel. The output impedance stays below 0.10 ohms. You can drive power-hungry headphones with different impedance using the A50s. Even though you get only a single-ended input with the TOPPING A50s, it has a fully balanced amp circuit. This allows you to use the A50s to drive single-ended headphones through a 6.35 mm output and balanced headphones with a 4.4mm balanced output.


2 STEP GAIN SETTINGS TO SUPPORT ALMOST ALL TYPES OF HEADPHONES
Engineered with 2-step gain settings, the TOPPING A50s offers 0dB/6dB using the single-ended output and 6dB/12dB using the balanced output. This wide range of gain settings help you to pair the TOPPING A50s with almost all types of headphones. You can use the 50s with power-hungry over-ear headphones as well as with the most sensitive in-ear monitors.


DOUBLES UP AS A PREAMP WITH SAME ULTRA HIGH PERFORMANCE
The best part of NFCA (Nested Feedback Composite Amplifier) modules is that they don’t just help the A50s to drive the headphones but also to act as a preamp while delivering the same level of ultra-high performance. When you are using the A50s as a preamp, the output impedance remains as low as 20 Ohms enabling the A50s to be paired with various devices.


EASY HPA/PRE AUTOMATIC SWITCHING TO SHIFT FROM PREAMP TO HEADPHONE AMP MODE
When not connected to the headphones, the TOPPING A50s works in the preamp mode and the RCA on the back panel acts as the output for the amplified signal. The A50s automatically switches to headphone amp mode when you connect it to headphones through 6.35mm output or the 4.4mm output. Under the headphone amp mode, the 6.35mm and the 4.4mm are the output for signals.


THD+N @1 kHz A-WT | <0.00007% @Output=850 mW(32Ω) <0.00006% @Output=90 mW(300Ω) |
THD ©20-20 kHz 90 kBW | <0.0004% @Output=720 mW(32Ω) <0.0002% @Output=77mW(300Ω) |
SNR @MAX OUT 1 kHz A-WT | 137dB |
DYNAMIC RANGE @1 kHz A-WT | 138dB |
FREQUENCY RESPONSE | 20 Hz-200kHz(±0.05dB) |
OUTPUT LEVEL | 21Vpp |
AP MEASURED NOISE LEVEL @A-WT | <0.7uVrms @G=L <0.8uVrms @G=H |
ACTUAL NOISE LEVEL* @A-WT | <0.3uVrms @G=L <0.45uVrms @G=H |
CHANNEL CROSSTALK @1 kHz | -86dB |
IMD CCIF@(18 kHz + 19KHZ) | -116dB |
IMD SMPTE @(60HZ + 7KHZ) | -110dB, SMPTE4: 1 -118dB, SMPTE1: 1 |
INPUT SENSITIVITY | 7.5Vrms @G=0dB 3.8Vrms @G=6dB |
GAIN | 0.0dB @G=0dB 6.0dB @G=6dB |
OUTPUT IMPEDANCE | <0.1Ω |
OUTPUT POWER THD+N<1% | 1.4W x 2 @32Ω 192mW x 2 @300Ω |
OUTPUT POWER@2VRMS IN | 1.4W x 2 @32Ω 192mW x 2 @300Ω |
LOAD IMPEDANCE | >8Ω |
THD+N @1 kHz A-WT | <0.00007% @Output=3.4W(32Ω) <0.00006% @Output=367mW(300Ω) |
THD ©20-20 kHz 90 kBW | <0.001% @Output=2.88W(32Ω) <0.0005% @Output=307mVV(300Ω) |
SNR @MAX OUT 1 kHz A-WT | 143dB |
DYNAMIC RANGE @1 kHz A-WT | 144dB |
FREQUENCY RESPONSE | 20 Hz-200kHz(±0.05dB) |
OUTPUT LEVEL | 42Vpp |
AP MEASURED NOISE LEVEL @A-WT | <0.9uVrms @G=L <1.1uVrms @G=H |
ACTUAL NOISE LEVEL* @A-WT | <0.6uVrms @G=L <0.95uVrms @G=H |
CHANNEL CROSSTALK @1 kHz | -128dB |
IMD CCIF@(18 kHz + 19KHZ) | -116dB |
IMD SMPTE @(60HZ + 7KHZ) | -110dB, SMPTE4: 1 -118dB, SMPTE1: 1 |
INPUT SENSITIVITY | 7.5Vrms @G=0dB 3.8Vrms @G=6dB |
GAIN | 6.0dB @G=0dB 12.0dB @G=6dB |
OUTPUT IMPEDANCE | <0.2Ω |
OUTPUT POWER THD+N<1% | 3.5W x 2 @32Ω 760 mW x 2 @300Ω |
OUTPUT POWER@2VRMS IN | 1950 mW x 2 @32Ω 208mW x 2 @300Ω |
LOAD IMPEDANCE | >8Ω |
BOX CONTENTS | 1. TOPPING A50s |
2. 15V DC Adapter | |
3. 6.35 mm to 3.5 mm adapter | |
4. User manual | |
5. Warranty Card |


GENERIC NAME | Headphone Amplifier |
COUNTRY OF ORIGIN | China |
IMPORTER DETAILS | Importers Name: Ferrari Video Address: 63/18, 1st Main Road, Gandhi Nagar, Chennai - 600020 Contact No: 044-24420733 |
NET QUANTITY | 1 |
1.4W X 2 @32Ω
192mW X 2 @300Ω
OUTPUT POWER@2VRMS IN:
1.4W X 2 @32Ω
192mW X 2 @300Ω
Balanced:
3.5W X 2 @32Ω
760 mW X 2 @300Ω
OUTPUT POWER@2VRMS IN:
1950 MW X 2 @32Ω
208mW X 2 @300Ω
1 Year Warranty
Don't sweat it, this TOPPING - A50s comes with a warranty
from TOPPING that covers manufacturing defects.
All products featured on Headphone Zone are backed by an original manufacturer's warranty.
Read more about TOPPING's warranty in India.
"A50S, it is really impressive when it comes to technicalities as speed, decay, details, transparency and frequency response. It definitely performs like an NFCA Amp."
Read More