Trends TA-10.2 Class-T Amp. with 3A AC Adaptor applied the proprietary T-amp technology for audiophile quality sound, high power efficiency (90%) and less heat generation. compact design (mini-size & light weight), easy portable and setup. separated amplifier & AC adaptor design to minimize mutual interference and flexible to apply other power sources, e.g. lead-acid battery. standard gold-plated audio and speaker sockets used to be compatible with most audiophile quality cables. applied the specially designed audiophile-grade "Trends" MKP capacitors as audio input decoupling capacitor which guarantee the best original audio signal feed into the amplifier.applied the lowest LSR & highest ripple current Rubycon MCZ series tank capacitors as the power filtering capacitor which best suit the switching PWM characteristic of class T (class-D) amplifier Re-organized the sockets layout of the back panel which provides a more convenient audio cable and speaker cable connections.enhanced the chassis with beautiful satin finish and smarter black/white contrast the DC bias between speaker terminals can be offset (close to 0mV) by adjusting the potentiometers (factory pre-set). It suppresses the "pop" sound when power on/off and also increase the sound purity.option to work as a pure power amp by simply reset jumpers to by-pass the volume controlling circuit built-in over-current protection.built-in over-temperation protection.audiophile-graded parts and components.air-core inductor used (instead of magnetic-core) for better sound and the stylish & specially-plated aluminium case provides not only good-looking, and also provides outstanding shielding capability.