Topping A90 Discrete Balanced Headphone Amplifier Pre Loved
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ℹ Product Information
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.
- 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.
- 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).
- 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
- 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.
- 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.
- 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
