Description
TOPPING A90 Discrete: The Flagship Reference-Grade Discrete Headphone Amplifier
The TOPPING A90 Discrete is a monumental achievement in audio engineering, designed for audiophiles who demand the ultimate in power, precision, and fidelity. By implementing a fully discrete NFCA architecture, the A90 Discrete achieves technical specifications that challenge the limits of modern audio measurement, providing a truly transparent and reference-grade listening experience.
Fully Discrete NFCA: Uncompromised Purity and Power
The 'Discrete' designation is the key to the A90's flagship performance, utilizing individual components for maximum customization and optimization.
All-Discrete NFCA Modules
The A90 Discrete features fully discrete NFCA (Nested Feedback Composite Amplifier) modules. This sophisticated architecture uses individual transistors and components, allowing TOPPING to precisely tune the circuit for the lowest noise and distortion. It achieves an astonishingly low Total Harmonic Distortion plus Noise (THD+N) of less than 0.00006%.
Massive 10W Output Power
This amplifier is a powerhouse, capable of delivering over 10 Watts (10000mW) of output power per channel into a 32Ω load. This immense driving capability ensures perfect control and dynamic response, effortlessly managing even the most power-hungry planar magnetic and high-impedance headphones.
Ultimate Versatility and Connectivity
The A90 Discrete is built to serve as the central control unit for any high-end audio setup, functioning as both a premium amplifier and a preamplifier.
Integrated High-Performance Preamplifier
The unit functions as a state-of-the-art Preamplifier with ultra-low noise and exceptional dynamic range. This high-fidelity preamp mode is perfect for driving active speakers or a dedicated power amplifier with flawless signal integrity.
Full Balanced XLR and RCA I/O
The A90 Discrete provides comprehensive input and output flexibility with both Balanced XLR and Single-Ended RCA connections. This ensures perfect integration with any high-end DAC (such as the D90 III) and seamless signal routing between components.
User-Focused Design and Control
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Three Gain Settings: Offers three selectable gain settings (Low, Mid, High) for perfect matching with any headphone sensitivity, from IEMs to planar magnetics.
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Relay Volume Control: Utilizes a highly precise relay-based volume control system, ensuring flawless channel matching and eliminating volume tracking errors common with analog potentiometers.
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Universal Headphone Outputs: Equipped with 6.35mm Single-Ended, 4.4mm Balanced, and XLR 4-Pin Balanced outputs, providing connection compatibility for all professional and audiophile headphones.
