The Topping A90 Discrete is a high-performance headphone amplifier featuring a fully balanced design. It boasts a symmetrical circuit architecture and emphasizes discrete components for superior audio fidelity. The device supports balanced XLR and unbalanced RCA inputs and offers balanced XLR outputs for connecting to headphones, ensuring optimal compatibility and sound quality.

The Topping A90 Discrete is a high-performance headphone amplifier featuring a fully balanced design. It boasts a symmetrical circuit architecture and emphasizes discrete components for superior audio fidelity. The device supports balanced XLR and unbalanced RCA inputs and offers balanced XLR outputs for connecting to headphones, ensuring optimal compatibility and sound quality.