Audison Forza AF C4.10 bit Amplifier 4 Channel Amp and 10 Channel DSP 600w RMSAF C4. 10 bit 4 CHANNELS AMPLIFIER WITH DSP 600W AUDISON FORZA, THE NEXT LEVEL OF OEM INTEGRATION AND TUNING AUDIOPHILE SOUND YOU EXPECT FROM AUDISON AF C4. 10 bit boasts four high fidelity amplified channels 90W x 4 @4*, 150W x 4 @2*, with the audiophile sound of the latest generation Audison D Class technology. Higher switching frequencies, steeper filtering, and higher tolerance components deliver sound above and beyond the expectation of Class D