Does he have a smart TV with an optical out?

Opt to coax converter would give him a very basic digital in.

Long term a 562 would be a cheap multi source converter for digital in.

Kind regards
David

G65, 210, HD621, DSP5200.2, DSP3300C, DSP3200,

NUC 7i5 Roon Core, Apple TV 4K, Blustream SW41AB-V2, Panasonic TX55fx802, EE8 switch

Multiroom - Ms200, Nile’s ZR4
Bedroom - 251