Jimjoyce25,
The immense advantage of monoblock running as Spectron does - you can run them FULLY balanced and thus:
"...balanced mode of operation doubles the slew rate and bandwidth by virtue of the out of phase transmission. This also suppresses the noise and buzz originated upstream from the amplifier. The other major advantage of mono balanced mode in Spectron amplifiers is that transmission of both positive and negative signals (in each amplifier) is maintained separately from the amplifier's input to the speakers binding posts. Assuming that the signal path electronics are matched, all of the intrinsic amplifier distortions arrive at the speakers with practically identical amplitude but with opposed polarity and essentially cancel each other. The result is a largely noise and distortion free sound transmission, leading to a spectacular improvement in three-dimensionality and resolution of detail in the music"
i.e. utilizing two channels, as Spectron does, you can run them with two sets of signals but opposed polarity and practically eliminate any distortion.
When you run only one channel you double your headroom which is immensely important but you keep the same distortions in signal path.
All The Best
Rafael