Vintage Integrated as Audiophile Headphone Amp?

[Revv]

I just thought I would ask this question and start a discussion...

What are the possibilities of using vintage (or maybe not so vintage) integrated or pre-amps with headphone outputs as a decent quality headphone amp?

Is this potentially an option? and if so does anyone have any recommendations as to which models had the best quality headphone outs?

Also are their any (relatively) simple mods that one could do to improve the quality of the headphone output on a vintage integrated?

Any thoughts would be appreciated...

 

[user 997]

 

[Dhiveshan]

 

[Gohde]

 

[Scubadude]

 

[user 997]

 

[Crankshaft]

 

[afroaudio]