mckay3d

This looks like the closest match from Wichelt to me: Item Number: 355321 Color: Beautiful Beige Style: Aida Count: 16ct Fiber Content: 100% cotton Width: 51" DMC: 006/007 PrePack: 355321A Retail Size: 1

Looking at the manual for the Model 20 it looks like the speaker jacks on the turntable/amp are RCA phono jacks. The plugs should be available at Radio Shack or on eBay. The manual, if you don't have one, is available here: https://www.hifiengine.com/manual_library/klh/twenty.shtml. You have to join to download but it's free and easy.