I have a beogram 1000 with the optional preamp fitted which I am getting rid of. It will be going to the great record deck collection in the sky. If somebody wants the preamp from it they can have it for £10 and a small donation to the site. I havent heard it working but am assured that it did until very recently when someone broke the stylus. If when the buyer gets it it doesn't work I will give them a refund.
Its the brown board on the left. It just slots in and has 1 screw to hold it in. The screw will be provided.