For Panasonic Ql systems, I highly recommend pairing with some form of digital output. Various options include:
OEM Nintendo Gamecube Component cables
Insurrection Industries Carby
As a reminder, these systems are fully reconditioned but may show some signs of wear. They are about 20 years old at this point and it’s to be expected. That said, I try to offer only systems in great condition that I would be happy to own in my personal collection.