My Sansui alpha integrate , a vintage product from 35 years ago i used for my headphone, i decided to upgrade from it with one of the best reputed and reviewed tube amplifier for headphone or efficient speakers and pre-amplifier in the world for his price...One month ago...
I return it on the spot after one hour listening ( he was in used state from the manufacturer ) ... No comparison at all between the two amp. for serving my hard to drive and picky AKG K340 gem, i lost a lot of money for me in the process, postal fees, insurance and customs...300 bucks...
😊
But i learned that all is about synergy and a vintage marvel could be not an obsolete piece of trash but a top product even today...
Then it is useless to proclaim rule as tube amp are better or pre-amp are necessary etc... Too many exceptions...
it is better to proclaim as absolute a rule as : synergy rule ...
Then if the integrate is top notch no need to buy a pre-amp...
If the integrate is less top notch now you must match the pre-amp and the amp, and who knows replace your integrated simply by a better one...