This is one of the most sought after quad amps today. At 25 x 4 or 70 x 2 this sound is fantastic. Plenty of inputs ,multiple  tape lopes  4 accurate  VU meters. This can power just about any home speakers made in the last 50 years. At the lower 25 watts it sound unbelievable  with 4 speakers. It does not matter if they are book shelf or floor standing.  this unit it is about 3/4 rebuilt. A previous  owner performed  a very poor repair or what is called a hack job. I see these from time to time and we do the best we can to make them as close to original as possible