i have been looking for my answer to the op’s question for some 40 years, tried soooo many .... haven’t found it yet (last one i tried, recently, the decware open baffle zen with 15 in driver, was an abject disappointment to my ears)
that said, i have kept a few gems of low wattage amplifiers (wavelength cardinal xs, cary 300b sei, audio sector patek) as hope springs eternal ... 😄