Based on the universal box design of active and passive, LA1806/LA1808/LA1810/LA2812 can be upgraded to the active DSP active version by adding D-class amplifier modules.Thanks to the high-power multi-channel D-class switch power amplifier module (2 × 400W@8Ω + 1 × 1500W@8Ω), one active can drive the following combinations:LA1806DSP: It can drive up to 4 LA4206 and 1 LA1806 passive to achieve a 2+4 combination.LA1808DSP: It can drive up to 4 LA4208 and 1 LA1808 passive to achieve a 2+4 combination.LA1810DSP: It can drive up to 2 LA4210 and 1 LA1810 passive to achieve a 2+2 combination.LA1806DSP: It can drive up to 4 LA4110 and 1 LA1806 passive to achieve a 2+4 combination.LA1810DSP: It can drive up to 2 LA4312 and 1 LA1810 passive to achieve a 2+4 combination.LA2812DSP: It can drive up to 2 LA4212 to achieve a 1+2 combination.Module parameters:Output power (1KHz / THD = 1%): 2 × 400W@8Ω + 1 × 1500W@8ΩAmplifier circuit type: Class DInput sensitivity / impedance: 1.2V / 20KΩSignal-to-noise ratio: > 120 dBHarmonic distortion (T.H.D): < 0.05 %Rated voltage / frequency: 90V-260V / 50-60Hz