Here is a nice arrival. This Fisher amplifier packs, you guessed it, 55wpc and has a high mpx filter system on board. My initial demo with this Solid State unit sounded nice although I think it needed some run time to really open up. A very traditional yet sleek design.
Fisher had the market in the US from the late 50's through the 60's in domestic built HiFi. Their high end, well known and still revered today as a classic tube receiver - the Fisher 500c series is as good as you can find from the New York based manufacturer.
This series is difficult to find however can be a great value based on it's power and general performance. Stan Getz - Reflections (1962) is an incredible LP to spin into new gear!