Since my early 20s (40 years ago), I have been interested in high-fidelity equipment for music reproduction. To me, "high-fidelity equipment" means powerful amplifiers (100s of watts rms per channel), heavy big-box wooden speakers (several cubic feet each) capable of reproducing 30 hz to around 20 Khz with a flat frequency response and a bunch of other acoustic characteristics, and high quality devices to play music media. I am not into high-end equipment, where each component costs O($10^5)...
