In the 70s you were using digital? lol..lol.no loveinthehd.. I held onto that album with me from the time he came in on leave to marry his 1st. wife. I had asked him for that album Grand Funk Railroad Survival, I held on to that album, and one day I decided to give it back to him. He had put together a home audio/video set-up nothing special. Man when I gave that album back to him still with the cover the look on his face was priceless. He was a clerk-typist for a Captain in Germany, Frankfurt. 2001 was the year I gave it to him. I didn't buy the CD of Grand Funk Railroad Survival, until 2011 ordered from Amazon. So now, 'what about listening to CDs in the 70s'? Here hit this..puff, puff.. cough cough passes joint..jacking on the last sentence. :)