AVS Addicted Member
Join Date: Nov 2006
Location: Colorado Springs, CO
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I have noted that you can read 10 articles on bipolar vs MOSFET and get almost that many opinions.
There are advantaged and disadvantages to both. Neither should "sound" like anything. It's the job of the amp designer to make them both behave in a linear manner, amplifying the input signal to a higher amplitude, otherwise idential waveform.
Audible distortion, if any, is likely not the fault of the transistor itself, but result of inherent non linearities in amp design, for example crossover distortion which occurs in all class AB amps.
I suggest the Amplifier Design Handbook (I think the name is,) by Douglas Self for a treatment of MOSFET vs Bipolar transistors in terms of their use in amplifiers if you are curious about the technical side of things. Otherwise, I see no reason to prefer MOSFET or Bipolar designs assuming competent engineering. You will note that Bipolar amps are the more commonly used transistor in receivers and home amps. I think I see MOSFET used more in car amps, but that's not based on any hard evidence.
"But this one goes up to 11"