This is a fantastic sounding power amplifier, with 200W RMS. per channel at 8 ohm, over 300W. per channel at 4 ohm. This is a very stable and reliable amp. The amp is useable as a balanced input or regular RCA inputs. The Andromeda II is much improved over the regular Andromeda. The amp is known for its fidelity, very musical smooth sounding on highs and mid, very deep bass, great depth and sound stage. This amp was sold originally for $1600.00. I have the original packing and the original operating manual. The amp is in perfect working condition, all functions are working very well.Cosmetically, it is in good condition with some very small marks, not easily noticeable.