These are quite a find nowdays, so I would not sell them if I were you. They were manufacured in Germany in relatively small batches from carefully selected components. Something like this would be decent and cost effective solution to drive speakers like that.
https://www.amazon.com/AIYIMA-D03-Bluetooth-Amplifier-Amplificador/dp/B098QSPJJG
I’m currently using Kirksater Monitor 120 as the main speakers in my system, and I do not intend to move or sell them anytime soon. I hope that you did not sell yours. However, it would be good to test them an see if they’re ok before investing in any amp/dac or cables. The device that mentioned above has im it plenty of power, decent neutral sound and the integrated DAC (digital to analog converter). The only other thing that you would need to connect it to your speakers would be speaker cables. When speaker cables are concerned, I would recommend Van Den Hul Clearwater cables or Mogami 3103.
https://www.futureshop.co.uk/van-den-hul-the-clearwater-speaker-cable-custom-length/
https://www.parts-express.com/Mogami-W3103-1-ft.-Superflexible-High-Definition-2-x-12-AWG-103-1023
You're missing speaker amplification!
The Angels Horn has built in speakers? Did you recently purchase it to use it with the tower speakers or you already had the turntable and want to add the tower speakers?
The turntable has a built in "phono preamp" that applies the RIAA EQ to the phono signal, it doesn't power passive speakers.
To power the passive speakers get a Mini Amp, Mini Amp with DAC, Stereo Receiver, AV Receiver or Integrated Amp.
Plus Speaker Wire. Then How To Strip Speaker Wire and How to Install Speaker Wire.
Actually just get this instead of the Aiyima A04 and A07 combo -- same features, one box, and has an output for a subwoofer which you can add later:
https://www.amazon.com/AIYIMA-D03-Bluetooth-Amplifier-Amplificador/dp/B098QSPJJG