Nait 5i headphones

I have a Nait 5i which doesn’t have a headphone jack point. I want to listen via headphones. It’s been suggested I can add a preamp with a headphone socket via the tape outlet. I’d welcome any comments on this and any other ideas on how to listen via headphones (Bluetooth or cabled) through the Nait 5i. Want to do cost effectively whilst maintaining best sound quality.
Cheers

Have you read the relevant FAQ on here about adding a headphone amp to your Naim system?