“Two-Face”-Fully Balanced Headphone Amplifier/Preamplifier Application A70pro is one of the first desktop decoding products with a full-color screen from TOPPING, boasting several notable features. The user-friendly control panel and sleek UI offer a unique experience. It can function as either a headphone amplifier or preamplifier application, and we believe it is worth trying out one of the amplifiers from TOPPING's launch. The T'ang-ku-la Module for Longer Lifespan The T'ang-ku-la Module utilizes a new three-stage feedback circuit, significantly reducing noise and high-frequency distortion, elevating the dynamic range to an unprecedented 147dB level. This new technology greatly reduces heat generation, thereby significantly enhancing reliability, extending electronic component lifespan, and reducing thermal noise. Using a Re-Optimized New Circuit Architecture With the newly developed ultra-low noise input stage, it further improves the noise performance of balanced input while increasing input impedance up to 20kΩ, providing better compatibility with incoming devices. The gain architecture has also been redesigned to further reduce noise and distortion at high gain states than the prior architecture. Ground Loop Noise Disappearing Magic And Relay Volume Control When multiple devices are used in combination, there may be ground loop noise. A70 Pro adds a GND/LIFT switch. When ground loop noise occurs, switch to LIFT, and the noise will disappear. A70 Pro has an actual noise level of
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