Would McIntosh Auto Transformers affect speaker sound?


I have a question about McIntosh and its auto transformers. The auto transformers allow the wattage to be the same on all ohms. However, you have to pick which ohm to run on the amp to the speaker.

Since a speaker can be dynamic in ohms (dip between 8 ohms and 4 ohms typically), does this mean the McIntosh will not correctly match the dynamic range change? Would it cause the speaker not to give the same soundstage or holographic sound that a traditional amp would give? 

dman777

I would agree that a transform will not affect sound staging, etc., however transformers are effectively coils, and coils have an effect on high frequencies. So wouldn't the introduction of a transformer into the chain cause some issue (be it phasing or whatever)in the sound quality in the high frequency range. Just asking.

In this rare instance I actually agree with AudioTroy. The reason Mac amps sound so warm with otherwise neutrally voiced speakers is the autoformers. The same goes for other brands’ transformer-coupled output stages. It’s essentially the complete opposite end of the short-signal path design spectrum. 

I can't imagine any good reason for using an autoformer in modern high quality solid state amplification.

Sorry if this has already been covered but what is McIntosh’s reasoning for using autoformers in their modern equipment? Genuinely curious. Thanks

@som Wrote:

Sorry if this has already been covered but what is McIntosh’s reasoning for using autoformers in their modern equipment? Genuinely curious. Thanks

See here

Mike