Pipe music to kitchen

I want to pipe music from my living room system to my small kitchen. I do not need a separate source for the kitchen. I want sound that will be fun while working in the kitchen -- good mid-fi will be fine. Seeking good rhythm, mid-range clarity, and reasonably smooth response within realistically limited frequency range. Speakers will be mounted on-wall.

Space is a challenge -- don’t want to give up the All-Clad for stereo. I just need amplification and volume control. I’ve got an old Harman-Kardon PM640 integrated that would perform the job well, but are there any more compact options you can think of?

How about running the line-level signal from my living room preamp to the kitchen? Distance as the sparrow flies would be about 30’, but I’ll probably need to allow 45-50 feet of cabling. What kind and price-range of cabling should I be looking for?

There have been many appropriate speaker suggestions made in other threads, but feel free to suggest your favorite tiny speakers. I have a pair of Linn Sekrits available for use that sound great, but unfortunately, they’re too big.

What do you think about going mono with one speaker in this situation?

Thanks, Jayson