This vintage Pioneer Stereo Receiver with model number SX-450 is in good working condition.
I have personally tested the component ports with a CD player since I no longer own a record player or tape player. The Tape Player port worked the best with the best sound but the others do work.
I tested both A and B speaker ports and are in working condition. There were no noticeable difference in sound quality between the two.
The FM tuner worked on one local station but with an additional antenna, you should be able to pick up more channels.
It appears that all lights are in working condition.
Please note that this is a very old piece of equipment so there may be some imperfections.
Please see pictures for the condition.
Thank you!