Years ago at RMAF I heard a Bricasti Design DAC and (?amp, not his) power a large three-way pair of Harbeths (ported as I recall) that looked like big monitors.
Classical music is okay and I own some (not enough) and work at it but hearing that setup with classical music made me want to stay for hours. It was stunning sound due in no part to those speakers as well as electronics. It was one of a very few show moments (over a dozen years) that I never forget....