Tony,
The type of music and volume level preferences make a difference for sure.The 845 amp will win the grunt/rock and roll/large symphony battle, as the Frankenstein breaks in it will narrow but won`t completely close that gap. The special beauty of the Franks is with acoustic jazz and un amplified music in general. Although the mastersound is very good with this type of music ultimately I think the franks will be subtlely superior as they become increasing more organic,pure and oh so natrural with tonality,timbre and harmonic preservation. No amp can be perfect and excel in every single parameter of sound /music reproduction.The Mastersound will have the power upperhand beyond the Frankenstein`single 300b yet not quite match the transparency and purity. How forunate you are to have both.
The type of music and volume level preferences make a difference for sure.The 845 amp will win the grunt/rock and roll/large symphony battle, as the Frankenstein breaks in it will narrow but won`t completely close that gap. The special beauty of the Franks is with acoustic jazz and un amplified music in general. Although the mastersound is very good with this type of music ultimately I think the franks will be subtlely superior as they become increasing more organic,pure and oh so natrural with tonality,timbre and harmonic preservation. No amp can be perfect and excel in every single parameter of sound /music reproduction.The Mastersound will have the power upperhand beyond the Frankenstein`single 300b yet not quite match the transparency and purity. How forunate you are to have both.