PIONEER | 4-Channel GM Digital Series Class FD Amplifier 400W | GM-D1004Specifications _x000D_ _x000D_ Number of Channels: 4 _x000D_ Maximum Power Output: 400W _x000D_ Maximum Power Output at 4 : 100W x 4 _x000D_ Nominal Power (RMS) Output at 2 : 45W x 4 _x000D_ Nominal Power (RMS) Output Bridged at 4 : 90W x 2 _x000D_ Amplifer Class: Class FD _x000D_ Maximum Power Output at 2 : 100W x 4 _x000D_ Fuse Rating: 15 Amps _x000D_ Signal to Noise (SN) Ratio: 75 dB _x000D_ Description _x000D_ Compact Design _x000D_ Whether you