Any suggestions where in Germany can one acquire players?If you have interest in older equipment, it is always important to be patient and stay on the look out.
Buying stuff from olx or ebay ideally should be avoided. Its good to socialize requirements with friends with common interests. Ownership history is important. The most valuable gear purchased used, is gear that was owned from new, by the single owner. If you have someone abroad, especially in Germany, you'll have access to equipment that is usually in pristine condition (also 230 volt versions). Another factor is the pricing. If you want really good stuff, it often comes at a price.