
TOPPING PA3 Stereo Amplifier
The Topping PA3 is a compact stereo amplifier that comes with ST’s class-D TDA7498E amp chip. It delivers 80 watts per channel at a 4-ohm load, which is enough to drive 10-inch speakers. LEDs on the front panel indicate the input status and the MCU monitors issues like overload, overheating, and high/low voltage. Two RCA inputs allow you to connect two devices at a time and switch between the inputs using the button on the front panel. Finally, the PA3 comes with ALPS potentiometer, EPCOS film capacitors, a Nichicon hi-fi capacitor, and an OMRON relay. Specs: Aluminum construction Curved, screwless front panel Embedded rear panel TDA7498E amp chip Suitable speaker impedance: 4–8 ohms Maximum output power: 80W x 2 (4 ohms), 70W x 2 (8 ohms) THD+N (at 1 kHz): 0.04% Input sensitivity: 0.6 Vrms (4 ohms), 0.9 Vrms (8 ohms) Noise (A-weighting): < 0.5 mW Gain: 29.3 dB SNR: 89 dB (4 ohms), 91 dB (8 ohms) Analog input: 2 x RCA (L+R) Analog output: Banana jack, BTL output Dimensions: 6.6