Key Features
- T’ang-ku-la amplifier architecture
- Powerful 22,000mW output for any headphone type
- Fully balanced relay volume control for precise adjustment
- Independent preamp mode for versatile system integration
- Elegant industrial design with intuitive full-colour display
Topping A900D Desktop Headphone Amplifier, Silver Overview
The Topping A900 Ultra-Flagship Headphone Amplifier is designed for discerning listeners who want a balance of power, precision, and sophistication in their listening setup. Its advanced T’ang-ku-la amplifier architecture achieves an impressive 151dB dynamic range and 0.00003% THD, bringing out the smallest details in your music with exceptional clarity. The fully balanced relay volume control ensures smooth, accurate adjustments in 0.5dB steps, maintaining perfect balance between channels for a refined listening experience.
Delivering up to 22,000mW of output power, the A900 confidently handles everything from high-impedance studio headphones to sensitive in-ear monitors. It also features an independent preamp mode, giving you the flexibility to use it as part of a wider hi-fi system. The 2-inch full-colour display and touch-sensitive controls make operation simple and responsive, while the elegant aluminium housing reflects the A900’s focus on both form and function.
Product Ref: 350577
Full Description
View Full DescriptionSpecifications
Balanced / Single ended in
| THD+N @1kHz A-wt | <0.000060% @Output=500mW (32Ω)<0.000055% @Output=80mW (300Ω) |
|---|---|
| THD @20-20kHz 90kBW | <0.00006% @Output=500mW (32Ω)<0.00005% @Output=80mW (300Ω) |
| SNR @MAX OUT 1kHz A-wt | 143dB |
| Dynamic Range @1kHz A-wt | 143dB |
| Frequency Response | 20Hz-40kHz (±0.05dB)10Hz-200kHz (±0.1dB) |
| Output Level | 30 Vpp @G=L30 Vpp @G=M30 Vpp @G=H |
| AP Measured Noise Level @A-wt | <0.7Vrms @G=L<0.9Vrms @G=M<1.5Vrms @G=H |
| Actual Noise Level @A-wt | <0.3Vrms @G=L<0.7Vrms @G=M<1.4Vrms @G=H |
| Channel Crosstalk @1kHz | -105dB |
| Input Sensitivity | 22.0Vrms @G=L7.0Vrms @G=M2.1Vrms @G=H |
| Gain | -6.1dB @G=L+4.3dB @G=M+13.8dB @G=H |
| Output Impedance | < 0.1Ω |
| Output Power | 6000mW x 2 @16Ω THD+N<0.1%3000mW x 2 @32Ω THD+N<0.1%1550mW x 2 @64Ω THD+N<0.1%660mW x 2 @150Ω THD+N<0.1%330mW x 2 @300Ω THD+N<0.1%165mW x 2 @600Ω THD+N8Ω |
Balanced in/ out
| THD+N @1kHz A-wt | <0.000060% @Output=500mW (32Ω)<0.000055% @Output=80mW (300Ω) |
|---|---|
| THD @20-20kHz 90kBW | <0.00004% @Output=500mW (32Ω)<0.00003% @Output=80mW (300Ω) |
| SNR @MAX OUT 1kHz A-wt | 151dB |
| Dynamic Range @1kHz A-wt | 151dB |
| Frequency Response | 20Hz-40kHz (±0.05dB)10Hz-200kHz (±0.1dB) |
| Output Level | 60 Vpp @G=L60 Vpp @G=M60 Vpp @G=H |
| AP Measured Noise Level @A-wt | <0.7Vrms @G=L<1.2Vrms @G=M<2.5Vrms @G=H |
| Actual Noise Level @A-wt | <0.3Vrms @G=L<1.0Vrms @G=M<2.3Vrms @G=H |
| Channel Crosstalk @1kHz | -153dB |
| Input Sensitivity | 22.0Vrms @G=L7.0Vrms @G=M2.1Vrms @G=H |
| Gain | -0.1dB @G=L+10.3dB @G=M+19.8dB @G=H |
| Output Impedance | < 0.1Ω |
| Output Power | 22000mW x 2 @16Ω THD+N<0.1%14000mW x 2 @32Ω THD+N<0.1%7000mW x 2 @64Ω THD+N<0.1%3000mW x 2 @150Ω THD+N<0.1%1500mW x 2 @300Ω THD+N<0.1%750mW x 2 @600Ω THD+N<0.1% |
A900 Pre-Amplifier Specifications
| THD+N @1kHz A-wt | <0.000055% |
|---|---|
| THD @20-20kHz 90kBW | <0.00003% |
| SNR @MAX OUT 1kHz A-wt | 151dB |
| Dynamic Range @1kHz A-wt | 151dB |
| Frequency Response | 20Hz-40kHz (±0.05dB)20Hz-200kHz (±0.1dB) |
| Output Level | 60 Vpp @G=L60 Vpp @G=M60 Vpp @G=H |
| AP Measured Noise Level @A-wt | <0.7Vrms @G=L<1.2Vrms @G=M<2.5Vrms @G=H |
| Actual Noise Level @A-wt | <0.3Vrms @G=L<1.0Vrms @G=M<2.3Vrms @G=H |
| Channel Crosstalk @1kHz | -153dB |
| Input Sensitivity | 22.0Vrms @G=L7.0Vrms @G=M2.1Vrms @G=H |
| Gain | -0.1dB @G=L+10.3dB @G=M+19.8dB @G=H |
| Output Impedance | 100Ω |
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