Thanks for that info. I’m not up on all the current technology so, I don’t have an amplifier and the tuner we have is about 40 yrs old. I’m still learning the new tv so not sure about the PCM. Is there not a cheaper way to hook up the Bose 501 such as a small converter box and cables? Or, if I want to keep the Bose, is the only way a new amp/ tuner? Thanks