Again the topic of weight of amps

On account of the fact that our amps don't have output transformers, they tend to be lighter than other tube amps that make the same power. For example our 140 watt amp weighs 36 pounds.

It’s no secret that big honking transformers produce toxic magnetic fields that distort the sound and that transformers produce mechanical vibration that affects everything in the chassis, especially given that transformers are bolted down to the chassis.

If they do the transformer was poorly spec'ed!

Nope, they all do. That’s why it’s important to wrap the transformers in mu metal. Of course you can ignore or dismiss the whole issue. I really don’t care. Even toroidal transformers that supposedly don’t emit magnetic fields do, in fact, leak. Been there, done that.

Hello geoffkait,

    I agree, I don't buy into the theory that the transformers have to be large, either.  The primary reason class D amps have such good bass response is their typical high damping factors, often >1,000, which is directly related to how well an amp is able to control the movement of bass drivers and panels.
    The other bugaboo often mentioned by some is the switch mode power supply (smps) used by some class D amps.   All the class D amps I own have typical linear amp power supplies using toroidal transformers but that's just a coincidence and not intentional, I know from personal experience the smps performs just as well as a power supply on the amps I've heard.

Tim

clearthink:
"Noble 100,What is funny is how you are convinced you know what I have listened to when in fact you have no idea what I have listened to and simply can not believe that what you like is not what others like and that many people think Class D has a long way to go before it can equal the consistent, reliable, superior performance of most conventional designs and I base that observation and conclusion upon listening to a variety of Class D amplifiers."

Hello clearthink,
     Okay, fair enough.  Why don't you enlighten us on some of the class D amps you've listened to and their supposed specific shortcomings in your opinion?  
     I realize all amp types have their specific strengths and weaknesses, 
it's beneficial to match one's amp with one's speakers and vice versa for optimum performance and an individual's choice of an amp is often a subjective one based on perceived sound qualities.  I know these factors were responsible for my choice of which amps to utilize in my system.  I expect, encourage and prefer others to make their specific amp choices based on these same factors.  
     Sure, I've encouraged others to consider auditioning good class D amps in their systems by accurately and honestly describing how well they've performed in my system.  But big deal, so what? and sue me! 
     It's all been, and will continue to be, solid and truthful advice given with my sincere intention that it may be helpful to others.  Of course, whether they follow my advice is beyond my control and, therefore, also my concern.


Tim