you have sentimental attachment to a...uh...amplifier?
I just got very used to seeing (and hearing) those big black boxes and they have been in every house we lived in for over 30 years.
If you're used to seeing (and hearing) something then having affection for those objects is quite common I would have thought.
I have had it for 30 years, I have listened to hundreds of CD with it (that I also still own). Thousands of hours. I know what it sounds like. It was £210 - I paid for a good chunk of it myself from my first job at Tesco in the smallest city (w/ cathedral) in England, pushing trollies. And! I fixed its crusty old volume pot for a couple of bucks instead of throwing it in the trash.
That's how sentimentality works... for me anyway.