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| Topping A50 III Headphone Amplifier Specifications | ||||
| SE IN/SE OUT | BAL IN/SE OUT | SE IN/BAL OUT | BAL IN/BAL OUT | |
| THD+N @1kHz A-wt | <0.00006%
@Output=500mW(32Ω)
<0.00006% @Output=80mW(300Ω) |
<0.00007%
@Output=500mW(32Ω)
<0.00006% @Output=80mW(300Ω) |
<0.00007%
@Output=2000mW(32Ω)
<0.00006% @Output=320mW(300Ω) |
<0.00012%
@Output=2000mW(32Ω)
<0.00008% @Output=320mW(300Ω) |
| THD @20-20kHz 90kBW | <0.0002%
@Output=500mW (32Ω)
<0.001% @Output=80mW(300Ω) |
<0.0005%
@Output=500mW (32Ω)
<0.001% @Output=80mW(300Ω) |
<0.0002%
@Output=2000mW (32Ω)
<0.001% @Output=320mW(300Ω) |
<0.0002%
@Output=2000mW (32Ω)
<0.001% @Output=320mW(300Ω) |
| SNR @MAX OUT 1kHz A-wt | 141dB | 136dB | 144dB | 137dB |
| Dynamic Range @1kHz A-wt | 141dB | 136dB | 144dB | 137dB |
| Frequency Response | 20Hz-40kHz(±0.5dB)
10Hz-100kHz(±0.1dB) |
20Hz-40kHz(±0.1dB)
10Hz-100kHz(±0.5dB) |
20Hz-40kHz(±0.5dB)
10Hz-100kHz(±0.1dB) |
20Hz-40kHz(±0.5dB)
10Hz-100kHz(±0.1dB) |
| Output Level | 21Vpp @G=L
21Vpp @G=M 21Vpp @G=H |
21Vpp @G=L
21Vpp @G=M 21Vpp @G=H |
18Vpp @G=L
42Vpp @G=M 42Vpp @G=H |
18Vpp @G=L
42Vpp @G=M 42Vpp @G=H |
| AP measured noise level @A-wt | <0.7uVrms @G=L
<0.7uVrms @G=M <1.1uVrms @G=H |
<0.7uVrms @G=L
<0.7uVrms @G=M <1.1uVrms @G=H |
<0.9uVrms @G=L
<0.9uVrms @G=M <2.1uVrms @G=H |
<0.9uVrms @G=L
<0.9uVrms @G=M <2.1uVrms @G=H |
| Actual noise level" @A-wt | <0.3uVrms @G=L
<0.3uVrms @G=M <1.0uVrms @G=H |
<0.3uVrms @G=L
<0.3uVrms @G=M <1.0uVrms @G=H |
<0.7uVrms @G=L
<0.7uVrms @G=M <2.1uVrms @G=H |
<0.7uVrms @G=L
<0.7uVrms @G=M <2.1uVrms @G=H |
| Input sensitivity | 13Vrms @G=L
8.0Vrms @G=M 1.9Vrms @G=H |
9.2Vrms @G=L
8.0Vrms @G=M 1.9Vrms @G=H |
13Vrms @G=L
7.8Vrms @G=M 1.9Vrms @G=H |
9.2Vrms @G=L
7.8Vrms @G=M 1.9Vrms @G=H |
| Gain | -12.0dB @G=L
0dB @G=M 11.9dB @G=H |
-12.0dB @G=L
0dB @G=M 11.7dB @G=H |
-6.0dB @G=L
6.0dB @G=M 17.9dB @G=H |
-6.0dB @G=L
6.0dB @G=M 17.7dB @G=H |
| Output Impedance | << 0.1Ω | < 0.1Ω | < 0.2Ω | < 0.2Ω |
| Input Impedance | 10.0kΩ @G=L
2.5kΩ @G=M 2.5kΩ @G=H |
2.0kΩ @G=L
2.0kΩ @G=M 2.0kΩ @G=H |
10.0kΩ @G=L
2.5kΩ @G=M 2.5kΩ @G=H |
2.0kΩ @G=L
2.0kΩ @G=M 2.0kΩ @G=H |
| Output Power | 2150mW x 2 @16Ω THD+N<0.1% 1400mW x 2 @32Ω THD+N<0.1% 1900mW x 2 @300Ω THD+N<0.1% | 3500mW x 2 @32Ω THD+N<0.1% 2700mW x 2 @64Ω THD+N<0.1% 760mW x 2 @300Ω THD+N<0.1% | 1400mW x 2 @32Ω THD+N<0.1% 1900mW x 2 @300Ω THD+N<0.1% 100mW x 2 @600Ω THD+N<0.1% | 2700mW x 2 @64Ω THD+N<0.1% 760mW x 2 @300Ω THD+N<0.1% 395mW x 2 @600Ω THD+N<0.1% |
| Load Impedance | >8Ω | |||