My backup integrated is a 15 yrs old Vincent tube/SS hybrid that has tone controls and.....a loudness button! 150 watts RMS. I have thought about selling it but I am having a hard time uploading photos.
I think a “midrange” tone control is too undefined a parameter. I use a C-J line stage that has EPL loops…same as tape monitors…and a Schiit Lokius to help add or subtract color from recordings. Not as good as parametric but way simpler to use. Maybe you could score a used McIntosh C48, C49, or an MA-7900 or MA8900? These have 5 rotary EQ controls.
I've got a nearly new dual 31 band EQ I'm not using since I got my hearing aids. Live near me, Plainfield, NJ, 07062? Borrow it, find the frequencies that make a difference in your space, then re-define your quest.
btw, I start by using an SPL meter combined with test tones, then I refine for my preference.
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