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We have just traded in of these Topping Headphone amplifiers. There was NO packaging supplied so if you require packing and shipping then please contact us BEFORE ordering for a price. NO free shipping applies to this sale.
The TOPPING A90 Discrete is an ultra-high-performance, fully balanced desktop headphone amplifier and pre-amplifier. It is widely celebrated in the audiophile community for its immense power and dead-silent noise floor.
Key Performance Specifications
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Massive Output Power: It delivers an astonishing 9,800mW per channel at 16 Ω and 1,000mW at 300 Ω via its balanced outputs. It can easily drive the most demanding planar magnetic headphones on the market.
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Ultra-Low Noise Floor: Features a residual noise level of just 0.2uVrms. This ensures a pitch-black background without any audible hiss, even when using hyper-sensitive In-Ear Monitors (IEMs).
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Fully Discrete Architecture: Re-engineered with four discrete Nested Feedback Composite Amplifier (NFCA) modules. Each module uses 39 transistors to create a fully balanced, ultra-linear signal path.
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Premium Design & Features
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R2R Resistor Ladder Volume Control: Replaces standard volume potentiometers with a relay-controlled resistor network. This provides flawless channel balance even at whisper-quiet listening levels.
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Versatile Connectivity: The front panel houses a 4-pin XLR balanced, 4.4mm balanced, and a 6.35mm single-ended headphone output. The back panel provides standard XLR and RCA inputs and pre-amp outputs.
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GND/LIFT Ground Loop Switch: Includes a physical toggle switch to instantly cut out annoying hums or background buzzes caused by ground loops in complex desktop stacks.
• Pre-Amplifier Functionality: Can act as a high-end pre-amp for powered studio monitors or power amplifiers, allowing you to run headphone out, pre-out, or both simultaneously
Generating expert take…
Topping Audio, founded in 2008 in China, emerged from a team of dedicated audio engineers committed to democratizing high-fidelity sound. Without a single prominent founder in the spotlight, the brand quickly distinguished itself through rigorous innovation, amassing over 20 patents and pioneering technologies in digital audio processing. This heritage of independent R&D, backed by more than 30 experienced engineers, has positioned Topping as a global Hi-Fi contender focused on precision and accessibility.
The company specializes in desktop and portable audio gear, excelling in digital-to-analog converters (DACs), headphone amplifiers, and power amplifiers. Flagship models like the D90 DAC showcase cutting-edge components, such as the AKM AK4499EQ chip, delivering studio-grade performance. Topping also offers audio interfaces and, under its TOPPING Professional sub-brand, pro-level solutions for demanding studio environments, all emphasizing meticulous testing for reliability and sonic purity.
In the competitive hi-fi market, Topping occupies a mid-tier niche as an audiophile favorite, renowned for punching above its weight with exceptional value. Praised for build quality, intuitive design, and uncompromising transparency at affordable prices, it rivals pricier brands while earning loyal followings on forums and among desktop enthusiasts seeking high-end results without premium markups.
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