My Personal Experience. There is a big difference in Amps and Pre-Amps. I personally tested against one another on the same turntable and speakers.
New Crown International PL-1 /SL-1 Against a New Yamaha Parametric / EQ Pre-Amp and Beast M Series Power Amp. The Crown way out-shined the Yamaha with twice the power rating with the Yamaha Pre-Amp. The PL 1 Was 50W / RMS (22,000MF Caps - Large for 50W) The Yamaha 100W RMS (Torrid Transformer Bigger Caps) on JBL Lancers. At that time in 1987 the Crown SL-1 /PL-1 was top pick for best $1200.00 combination at the time in a Stereo Review test and sound evaluation.
The Crown had much more transparency, Clarity with still maintaining a solid low end. And the 15 X20ft room shook when the lows hit. Punched just as well as the bigger Amp even at loud volume. Nice crisp highs without being harsh.
When I placed the Yamaha with the SL-1 Preamp we could not tell them apart until really cranking up the volume beyond what we could hardly take. The Yamaha then left the crown behind but not putting the smaller Amp to shame but the Yamaha True Power rating was apparent and the big transformer and big caps made an impressive show. The Yamaha Power Amp was real nice gear. Both Amps were high quality in their price of $400 Crown - $1200 Yamaha. Throw the Yamaha pre-amp. The Hafler 100W RMS Power cube. The Crown absolutely destroyed it. The brand new Hafler was rated two times the Power of the Crown. However the Hafler distorted before reaching 3/4 of what the Crown did without even being stressed. I think most people can find a difference with side by side comparison on the same pre-amp and speakers because I have. I am not an Audiophile but have been a fan of great gear. A former Electronic tech with an appreciation for design and robust power supplies. I also agree with the opinion that All quality Pre-Amps /Power Amps sound the same is B.S.
New Crown International PL-1 /SL-1 Against a New Yamaha Parametric / EQ Pre-Amp and Beast M Series Power Amp. The Crown way out-shined the Yamaha with twice the power rating with the Yamaha Pre-Amp. The PL 1 Was 50W / RMS (22,000MF Caps - Large for 50W) The Yamaha 100W RMS (Torrid Transformer Bigger Caps) on JBL Lancers. At that time in 1987 the Crown SL-1 /PL-1 was top pick for best $1200.00 combination at the time in a Stereo Review test and sound evaluation.
The Crown had much more transparency, Clarity with still maintaining a solid low end. And the 15 X20ft room shook when the lows hit. Punched just as well as the bigger Amp even at loud volume. Nice crisp highs without being harsh.
When I placed the Yamaha with the SL-1 Preamp we could not tell them apart until really cranking up the volume beyond what we could hardly take. The Yamaha then left the crown behind but not putting the smaller Amp to shame but the Yamaha True Power rating was apparent and the big transformer and big caps made an impressive show. The Yamaha Power Amp was real nice gear. Both Amps were high quality in their price of $400 Crown - $1200 Yamaha. Throw the Yamaha pre-amp. The Hafler 100W RMS Power cube. The Crown absolutely destroyed it. The brand new Hafler was rated two times the Power of the Crown. However the Hafler distorted before reaching 3/4 of what the Crown did without even being stressed. I think most people can find a difference with side by side comparison on the same pre-amp and speakers because I have. I am not an Audiophile but have been a fan of great gear. A former Electronic tech with an appreciation for design and robust power supplies. I also agree with the opinion that All quality Pre-Amps /Power Amps sound the same is B.S.