Does not matter what Transistors are used.It's all in the implementation and the synergy between components.
I have had both and have found that it's a synergy thing.At present I am using a B&K ST-202 that is very transparent.Before I had a Bi-Polar that could not drive Maggies correctly,but did great with box speakers.The B&K does both well enough to be satisfactory.There is no Mosfet Mist with the amp being forward Bias'd which I wish more amp manufactures would implement.That has been said to clear up the Mist associated with Mosfets.
Linearity is said to be better using Bi-Polars,but Ralph at Atmas-Sphere says otherwise and Gamut has done great in implementing them into his designs.
I am going to try another amp that has a Mosfet Pre-Driver stage and a Bi-Polar Output Stage .The Transistors will be made by Toshiba which are the same Trannies used in Mark Levs.This is real intresting as the LeAmps are only $400 a monoblock pair.At worst I will use them for Bass amps if I do not like the signatire in the Mids\Tweeter range.
Lastly the Power Supplies used have a great impact as to how good a design is.That is where it all starts!
JMO
I have had both and have found that it's a synergy thing.At present I am using a B&K ST-202 that is very transparent.Before I had a Bi-Polar that could not drive Maggies correctly,but did great with box speakers.The B&K does both well enough to be satisfactory.There is no Mosfet Mist with the amp being forward Bias'd which I wish more amp manufactures would implement.That has been said to clear up the Mist associated with Mosfets.
Linearity is said to be better using Bi-Polars,but Ralph at Atmas-Sphere says otherwise and Gamut has done great in implementing them into his designs.
I am going to try another amp that has a Mosfet Pre-Driver stage and a Bi-Polar Output Stage .The Transistors will be made by Toshiba which are the same Trannies used in Mark Levs.This is real intresting as the LeAmps are only $400 a monoblock pair.At worst I will use them for Bass amps if I do not like the signatire in the Mids\Tweeter range.
Lastly the Power Supplies used have a great impact as to how good a design is.That is where it all starts!
JMO