10-09-15: Djfst
So a followup question - if 2 amps both have 140 watts, why ever buy the more expensive amp if you are paying for wattage? Most have indicated quantity of wattage, but can the quality of wattage be better in some amps than others?
The more expensive amp has a more robust power supply which most probably allows that power amp to double down with each halving of the load impedance. This means that the more expensive amp also has more current delivery capability which in turn means that it can power hard-to-drive speakers far more easily than the less expensive amp.
This is based on the assumption the you are not comparing 2 very disparate brands i.e. both amps are of brands that have similar reputation & command similar prices in the marketplace.
10-10-15: Inna
I don't remember where but once I read that someone was comparing the sound of 100 wt Gryphon with 600 wt Krell, both transistor amps. Same speakers,forgot what that was. Besides sounding a lot better in every respect, Gryphon also sounded more powerful. Dynamic speakers, this I remember.
What are the possible explanations?
the above is an explanation for your question Inna. In this specific case the Gryphon doubles down all the way to 1 Ohms. One of the rather rare s.s. amps in the market & very expensive. My friend used to own the Antilleon Signature which was a 100W/ch amp but was 800W/ch into 1 Ohms. Beuatifully built amp - like a tank & almost no speaker could ruffle its feathers (but don't hook an ESL to this amp as it was not meant to drive an ESL).
Current delivery into a speaker load is very important esp. when it comes to hard-to-drive speakers (which are characterized by having wild impedance & phase swings).
