Designed as a separate mono-channel structure, XA8800MNE is a full symmetrical current negative feedback Class A amplifier. The input buffering amplifying stage adopts fast and wide-frequency amplifying circuit with cross coupling compensatory structure. Darlinton complex structure on the Voltage amplifying stage not only ensures enough voltage gain but also raises the input impedance to reach excellent match between the different stages. On the current drive stage, it adopts high power FET to supply drive current for the end stage. The static working current of 6 pairs high power transistors on the end stage as parallel output is about 300mA and each transistor works in the special linear area where current is higher. As for the power supply for the complete unit, each channel adopts 600W high quality annular transformer while the other parts adopts winding group on the power supply separately. Additionally, this unit adds protection functions, including power-on delay concussion protection, zero point floating on the output terminal, over current and over voltage of the power transistor protection. Rated Power: 200W (8ohm) 400W (4ohm) Frequency Response: 5Hz-200kHz T. H. D: <0. 025%(Rated Power) S. N. R: >110dB Input Sensitivity: 1.7V Damping coefficient: 210 Size: 305mm*427mm*202mm Weight: 24Kg (1PCS)