Topping A900 Ultra-Flagship Headphone Amplifier

Topping A900 Ultra-Flagship Headphone Amplifier

Name: Topping A900 Ultra-Flagship Headphone Amplifier
Brand: TOPPING
SKU: TOP.A900.SL
Price: 2099.0 AUD
Availability: InStock

TOPPINGSKU: TOP.A900.SL

Price:

$2,099

*Check with our team or your local store for availability.

We guarantee that all of our stock is 100% genuine,
Australian sourced stock, with full local warranty.

Ultra-Flagship Power
The Topping A900 is an ultra-flagship headphone amplifier designed for listeners who want massive power, sonic precision, and the satisfaction of fully-balanced, reference-level audio. With a six-channel T'ang-ku-la circuit, a true differential architecture, 151dB SNR, and a peak output of 22,000mW x2 @16Ω, the A900 delivers clean, powerful sound and remarkable control over any pair of headphones or monitors.

T'ang-Ku-La Circuit
At the center of the A900 is the patented three-stage feedback T’ang-ku-la circuit. It uses six channels of fully differential amplification to maintain balance all the way from source to output. This design cuts circuit noise and high-frequency distortion while boosting reliability and lowering thermal noise. The result is greater dynamic range, cooler operation, and a sound that stays clean and controlled.

Ultra-Flagship Combo
Pair with the Topping D900 to form a high-performance DAC and amp combo. With a full range of input and output interfaces, this setup is not only fun to use but also lets you experience high-end-level acoustics.

Six Headphone Outputs
The A900 offers six physical headphone outputs, including 6.35mm single-ended, 4.4mm balanced, 4-pin XLR balanced, and dual 3-pin balanced. Premium connectors from Neutrik and Pentaconn ensure tight, reliable contact. You can configure outputs as independent or simultaneous, so you can test or monitor multiple headphones without swapping cables.

Volume Control
Volume is handled by a fully-balanced relay-based system with 0.5dB steps and channel crosstalk as low as -153dB. That means every turn of the knob gives you precise control without drift or bleed; just smooth, predictable adjustments and beautifully separated channels.

Additional Features
Preamp Mode
Flip the A900 into dedicated preamp mode and use its balanced XLR outputs to feed a power amp or monitors. You get the same flagship-level performance with THD+N below 0.000055% and up to 60Vpp output.

Clean Power
The A900’s power supply is physically isolated between digital and analog circuits. This keeps interference down and voltage steady, so your music stays the focus.

Full-Color Display
The A900’s 2-inch full-color display provides useful, at-a-glance info: real-time playback details, FFT spectrum, or a VU meter. You can choose from nine background colors and switch between display modes easily. On the right, three touch buttons and a responsive knob let you navigate and control settings quickly and easily.

Remote Control
The included remote is machined from a single block of aluminum and finished with sandblasting. It feels substantial, looks good, and gives you control at a distance.

Six-channel T’ang-ku-la circuit with patented three-stage feedback
Fully balanced differential architecture
22,000mW x2 @16Ω output power
THD+N <0.00003% across the band (90kBW)
SNR/DNR up to 151dB
Balanced relay-based volume control with 0.5dB steps
Six headphone outputs: 6.35mm, 4.4mm, 4-pin XLR, dual 3-pin XLR
Supports independent or simultaneous output configurations
Preamp mode with balanced XLR outputs
Full-color display with customizable modes and colors
Premium Neutrik and Pentaconn connectors
Isolated power supply for analog/digital circuits
Precision-machined aluminum remote control

Topping A900 Flagship Desktop Headphone Amplifier Specifications
Headphone Amplifier (BAL IN / SE OUT)
THD+N @1kHz A-wt	<0.000060% @Output=500mW (32Ω) <0.000055% @Output=80mW (300Ω)
THD+N @20-20kHz 90kBW	<0.00006% @Output=500mW (32Ω) <0.00005% @Output=80mW (300Ω)
SNR @MAX OUT 1kHz A-wt	143 dB
Dynamic Range @1kHz A-wt	143 dB
Frequency Response	20Hz–40kHz (±0.05dB) 10Hz–200kHz (±0.1dB)
Output Level	30 Vpp @G=L/M/H
AP Measured Noise Level @A-wt	<0.7uVrms @G=L <0.9uVrms @G=M <1.5uVrms @G=H
Actual Noise Level @A-wt	<0.3uVrms @G=L <0.7uVrms @G=M <1.4uVrms @G=H
Channel Crosstalk @A-wt	-105 dB
Input Sensitivity	22.0Vrms @G=L 7.0Vrms @G=M 2.1Vrms @G=H
Gain	-6.1dB (Low) +4.3dB (Mid) +13.8dB (High)
Output Impedance	<0.1Ω
Output Power	6000mW × 2 @16Ω (THD+N<0.1%) 3000mW × 2 @32Ω 1550mW × 2 @64Ω 660mW × 2 @150Ω 330mW × 2 @300Ω 165mW × 2 @600Ω
Adapter Impedance	>8Ω
Headphone Amplifier (BAL IN / BAL OUT)
THD+N @1kHz A-wt	<0.000060% @Output=500mW (32Ω) <0.000055% @Output=80mW (300Ω)
THD+N @20-20kHz 90kBW	<0.00004% @Output=500mW (32Ω) <0.00003% @Output=80mW (300Ω)
SNR @MAX OUT 1kHz A-wt	151 dB
Dynamic Range @1kHz A-wt	151 dB
Frequency Response	20Hz–40kHz (±0.05dB) 10Hz–200kHz (±0.1dB)
Output Level	60 Vpp @G=L/M/H
AP Measured Noise Level @A-wt	<0.7uVrms @G=L <1.2uVrms @G=M <2.5uVrms @G=H
Actual Noise Level @A-wt	<0.3uVrms @G=L <1.0uVrms @G=M <2.3uVrms @G=H
Channel Crosstalk @A-wt	-153 dB
Input Sensitivity	22.0Vrms @G=L 7.0Vrms @G=M 2.1Vrms @G=H
Gain	-0.1dB (Low) +10.3dB (Mid) +19.8dB (High)
Output Impedance	<0.1Ω
Output Power	22000mW × 2 @16Ω 14000mW × 2 @32Ω 7000mW × 2 @64Ω 3000mW × 2 @150Ω 1500mW × 2 @300Ω 750mW × 2 @600Ω
Pre-Amplifier Specifications
THD+N @1kHz A-wt	<0.000055%
THD+N @20-20kHz 90kBW	<0.00003%
SNR @MAX OUT 1kHz A-wt	151 dB
Dynamic Range @1kHz A-wt	151 dB
Frequency Response	20Hz–40kHz (±0.05dB) 20Hz–200kHz (±0.1dB)
Output Level	60 Vpp @G=L/M/H
Actual Noise Level @A-wt	<0.7uVrms @G=L <1.2uVrms @G=M <2.5uVrms @G=H
Channel Crosstalk @1kHz	-153 dB
Input Sensitivity	22.0Vrms @G=L 7.0Vrms @G=M 2.1Vrms @G=H
Gain	-0.1dB (Low) +10.3dB (Mid) +19.8dB (High)
Output Impedance	100Ω

1 x Topping A900
1 x Remote Control
1 x 6.35mm to 3.5mm Adaptor
1 x AC Cable
1 x Quick Start Guide
1 x Product Information Card

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Topping A900 Ultra-Flagship Headphone Amplifier

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