headphones for tube system

Hi Audiogoners, greetings from the UK – I have a question that I hope someone will be able to answer for me.

Background: a lifelong music lover – (mostly contemporary ) and hifi enthusiast (albeit in a small way)  - now in my dotage and sadly with deteriorating hearing.

My system is an Abbingdon CD77, pre is a Melody 1688 II into a McIntosh 275 mk 4, B & W CM10 ser 2 speakers. Van den Hul cabling.

I want be able to use headphones and am not sure how to go about adding in an amp for them. Any suggestions and headphone recommends would be appreciated