TOPPING A900/SV

TOPPING A900/SV

• Maximizes performance of high-end headphones.
• Powerful drive for demanding headphones.
• Pure sound, silent background, no coloration.
• Precise relay volume control ensures channel balance.
• Hi-Fi preamp mode for desktop system integration.

Bank/ATM Transfer | 1% discount at checkout on order

NT$36,000

products.quantity_limit99999

This quantity is invalid, please enter a valid quantity.

SOLD OUT

Please message the shop owner for order details.

Add to Wishlist

TOPPING A900｜Flagship Full-Balanced Headphone Amplifier

Born for Extremes, Unleashing the Ultimate Potential of Every Headphone

The TOPPING A900 is a flagship full-balanced headphone amplifier and high-fidelity preamplifier, featuring TOPPING's patented T'ang-ku-la amplification module. It delivers an astonishing output power of up to 22,000mW into a 16Ω load, achieving ultra-low total harmonic distortion (THD) of less than 0.00003%. Its internal 6-channel full-differential architecture, composed of three T'ang-ku-la modules, ensures a pristine signal path from input to output, providing reference-grade sound quality and dynamic performance.

Compared to traditional designs using potentiometers for volume adjustment, the A900 utilizes a relay volume control system, completely solving channel imbalance issues at low volumes and providing channel crosstalk suppression of up to -153dB. Whether driving highly sensitive in-ear monitors or extremely difficult-to-drive planar headphones, the A900 delivers a pitch-black background, precise control, and unparalleled driving power, making it an ideal choice for audiophiles and professionals seeking ultimate sound quality.

Quick Facts

Brand: TOPPING
Model: A900
Maximum Output Power: 22,000mW @ 16Ω (Balanced)
Total Harmonic Distortion (THD): <0.00003%
Signal-to-Noise Ratio: 147dB (Balanced)
Headphone Output Connector: 6.35mm SE, 4.4mm Balanced, 4-pin XLR, Dual 3-pin XLR
Applicable Scenarios: High-impedance headphone driving, professional studio monitoring, HiFi audio systems, audiophile desktop systems, music post-production

使用者建議分析(點此展開)

▼

✅ 適合誰購買

Audiophiles with high-end or difficult-to-drive headphones who need a powerful headphone amplifier to fully unleash their headphones' potential.
Audio enthusiasts who pursue ultimate data performance and low distortion, hoping to hear the purest, uncolored sound.
Users who need a high-quality preamplifier to pair with power amplifiers or active speakers to build a HiFi system.
Professional recording engineers or music producers seeking monitoring equipment with various professional connectors that can accurately reproduce sound.

⚠️ 誰不適合購買

Beginners new to headphones, who only use easy-to-drive headphones and have a limited budget.
Users looking for an all-in-one unit with digital functions like DAC and Bluetooth, who do not want to purchase separate sources.
Users with more basic audio systems that cannot yet fully appreciate the sound quality improvements brought by a flagship headphone amplifier.

TOPPING A900 Core Technologies and Features

Flagship Output Power: Equipped with the patented T'ang-ku-la amplification module, offering balanced output power up to 22,000mW x2 @16Ω, with total harmonic distortion below 0.00003%, providing unparalleled dynamic range and control, effortlessly driving any high-difficulty headphones on the market.
True Full-Balanced Signal Path: Internally features a 6-channel full-differential architecture composed of three T'ang-ku-la modules, maintaining a complete balanced signal from input to output, effectively resisting noise interference, delivering purer sound quality and excellent channel separation.
Professional Multi-functional Outputs: Provides six types of headphone output connectors, including 6.35mm single-ended, 4.4mm balanced, 4-pin XLR balanced, and professional dual 3-pin XLR balanced outputs, utilizing high-quality Neutrik and Pentaconn connectors to ensure stable and reliable connections.
Precision Relay Volume Control: Features a full-balanced relay volume control design with precise 0.5dB steps, providing smooth and accurate volume adjustment. It completely eliminates channel imbalance issues of traditional potentiometers and achieves ultra-low channel crosstalk of -153dB.
High-Fidelity Pure Preamp Mode: The A900 is not only a top-tier headphone amplifier but also features a high-performance preamp mode, with THD+N below 0.000055%, serving as the core of a HiFi system, perfectly matching power amplifiers or active speakers.
Customizable Display and Control: Equipped with a 2-inch full-color display, capable of real-time display of playback information, FFT spectrum analyzer, or VU meter. Paired with intuitive touch buttons and a volume knob, it offers a responsive and quick operating experience with multiple display themes.
Independent Isolated Power Architecture: Analog and digital circuits use independent power paths to ensure stable voltage, significantly reducing mutual interference, thereby enhancing overall sound purity and dynamic performance.
Premium Craftsmanship Aluminum Remote Control: The included remote control is precisely CNC-machined from a solid block of aluminum, with a sandblasted surface, offering excellent feel and durability. It provides full control over all A900 functions, complementing the exquisite design of the main unit.

Technical Specifications

Product Type	Full-Balanced Headphone Amplifier / HiFi Preamplifier
Analog Inputs	1 x XLR (Balanced), 1 x RCA (Single-ended)
Headphone Output	1 x 4-pin XLR (Balanced), 1 x 4.4mm (Balanced), 1 x Dual 3-pin XLR (Balanced), 1 x 6.35mm (Single-ended)
Preamp Output	1 x XLR (Balanced), 1 x RCA (Single-ended)
Output Power (Balanced)	11000mW x 2 @ 16Ω 1300mW x 2 @ 300Ω
Output Power (Single-ended)	3000mW x 2 @ 16Ω 330mW x 2 @ 300Ω
Total Harmonic Distortion (THD+N)	<0.00003% @ 1kHz (Balanced) <0.000038% @ 1kHz (Single-ended)
Signal-to-Noise Ratio (SNR)	147dB (Balanced) 142dB (Single-ended)
Dynamic Range	147dB (Balanced) 142dB (Single-ended)
Frequency Response	20Hz - 100kHz (±0.1dB)
Output Impedance	<0.1Ω
Channel Crosstalk	-153dB @ 1kHz
Gain Setting	Low / Mid / High (Three levels)
Display	2-inch Full-Color Display
In the Box	Aluminum Remote Control, Power Cable, User Manual

Pros & Notes (Click to expand)

▼

Pros

Top-tier output power, up to 22,000mW @ 16Ω, capable of effortlessly driving almost all headphones on the market.
Features industry-leading ultra-low distortion (THD <0.00003%) and high Signal-to-Noise Ratio (147dB).
Provides six professional output connectors, including dual 3-pin XLR, meeting various high-end headphone connection needs.
Relay volume control ensures perfect channel balance and signal purity.
High-quality preamp mode can serve as the core of a HiFi system, offering versatile use.

Notes to Know

This unit is a pure analog amplifier and does not include a built-in DAC; it requires pairing with a separate digital-to-analog converter.
No USB or other digital input connectors; signal sources are limited to analog inputs.
Positioned in the flagship market, it has a higher price, suitable for audiophiles with extreme demands for sound quality.

TOPPING A900/SV FAQ

Q：Can the TOPPING A900 Ultra-Flagship Headphone Amplifier really drive all headphones?

▼

A：Yes, the A900 boasts an output power of up to 22,000mW, and its design goal is to handle the most difficult-to-drive headphones on the market, including high-impedance dynamic and low-sensitivity planar headphones, providing ample dynamics and control.

Q：What are the main advantages of the A900 compared to other TOPPING headphone amplifiers (such as the A70 Pro)?

▼

A：As a flagship model, the A900 uses a more premium T'ang-ku-la amplification module, offering higher output power (22W vs 17W), lower distortion, and a higher Signal-to-Noise Ratio. Additionally, the A900 provides the more professional dual 3-pin XLR output option.

Q：What kind of DAC do I need to pair with the A900?

▼

A：It is recommended to pair it with a DAC that also features high-quality balanced outputs, such as the TOPPING D900 or D90 III, to fully leverage the A900's full-balanced architecture. Of course, it is also fully compatible with any standard DAC with RCA or XLR outputs.

Q：How is the sound quality of the A900's preamp mode? Can it replace my existing preamp?

▼

A：The A900's preamp mode performance is outstanding, with THD+N below 0.000055%, delivering an extremely pure signal. For many HiFi systems, its performance can rival or even surpass many standalone preamps, making it an excellent solution for integrated desktop systems.

THINK2 Warranty & Support

Service Highlights

Fast Shipping: In-stock items will be shipped within 24 business hours.
Professional Technical Support: Our certified audio engineers provide consultation for installation, licensing, compatibility, and setup.
Comprehensive Warranty & After-Sales Service: Includes both manufacturer warranty and THINK2 customer support.

※ Shipping times are calculated based on business days. Actual warranty follows the manufacturer’s policy. THINK2 provides integration and support assistance.

Warranty & Return Policy

With valid proof of purchase and product serial number, customers are entitled to manufacturer warranty and THINK2 after-sales service.
DOA / Non-human defects: Within 7 days of purchase, after verification, customers may request return or replacement.
Exclusions: Damages from misuse, unauthorized modification, consumable parts, natural disasters, or improper use beyond instructions.
Application Process: Contact customer service during business hours for return instructions.
Service Coverage: Taiwan region primarily; overseas based on logistics standards.

THINK2 — Authorized Audio Gear Dealer in Taiwan