Here is my modest collection. Everything works with the JVC 550, JVC M90, JVC 838, and Toshiba Bombeat 12. The Lasonic trc-920 has given me trouble. I’ve restored the tape deck twice and it’s again not working broken. Honestly it feels like a light toy compared to the other blasters. Not a fan of this boombox although it looks great as a piece of art. Just don’t look at it too long or it might crumble lol.