G150 is a hi-fi 4-ch amplifier, this amplifier is consist of series hi-fi components such as audio special smt e-caps, high accurate resistors and capacitors, hi-fi audio opamps and hi-fi power transistors. Functions: 1. Double side pcb and smt components. 2. Hi-fi design. 3. Hpf/lpf function for both front and rear chanel. 4. High accurate noise isolation circuit. 5. High power output. 6.2 ohm load stable. 7. Short circuit, overload and over-temperature protecting. 8. Double auto cooling fan with temperature control technology. 9. Toughened glass panel with lighting logo. 10. Heavy duty terminal connectors. 11. Buffered output terminals.