LSA Voyager GAN Amplifier

testing 1-2-3

All passive and active circuits add distortion (whether they measure different or not). All passive xover parts add distortion (some of which can be measured). All brands of resistors, wires, capacitors, coiils and their implentation all change the sound. The ear can hear what is lower distortion. Those that listen to parts and execution absolutely know this. Most manufactures know this. This is why you see more expensive parts being used.....it is not just to "sell" you something....it is mostly because they have spent hours and hours trying to find the lowest distortion sounding parts to make the sound the best.

Active xovers also distort the sound. Everything distorts the sound. The less stuff you have in the signal path.....the better. Sinlgle driver systems with augmented super tweeter and woofers are the real deal. When you hear a great sounding amp drving a great driver with no xover whatsoever......OH MY!

However a simple two pole line level passive xover right before an amp can blow your mind, as well. So, if you bi-amp that way.....the results are super. Then you can add a transistor amp with its own processor to do bass extension. Many ways up the low distortion ladder.

Happy Thanksgiving!  We are all so blessed.  Pease share with everyone.

The ear can hear what is lower distortion. Those that listen to parts and execution absolutely know this. Most manufactures know this. This is why you see more expensive parts being used.....it is not just to "sell" you something....it is mostly because they have spent hours and hours trying to find the lowest distortion sounding parts to make the sound the best.
 

It has been widely proven in scientific studies that certain types of "euphonic" distortion are actually preferable by many over a lack of such distortion. The fact that many people prefer certain tube amps with much higher distortion levels than other available amps proves your thesis that "they have spent hours and hours trying to find the lowest distortion sounding parts to make the sound the best" is wrong.

By your logic, the amp with the lowest distortion sounds the best. Halcro tried that. It didn't work. It is much more complicated than "the amp with the lowest distortion" sounds "best".

Once distortion levels are below audibility, it doesn't much matter in any case.

This amp has rising distortion with load impedance, much like other class d amps which do not have the output filter inside the feedback loop. It makes their frequency response load dependent. This is yesterday's class d amp. Smart designers like Bruno Putzeys have the output filter within the feedback loop to create a flat response with load impedance and reduce distortion below audible levels.

+1

Which model of analyzer do you own?

Hp 8903B Old but it does the job.

Clearly some 'tube guys' do have analyzers on hand...

I never said the amp with the lowest MEASURED distortion is the best (Halcro or whatever). What I am saying is that the amp with the lowest SONIC distortion is the best. And of course, we could argue all day about what is distortion and what is real. The ear knows best. The measured distortion of an amp is only a measurement of about one one hundreth of its sonic distortion (yes, it is important but without the other 99+ things you can do you are just scratching the surface of true transparency). You could take the same design by the same engineer that measures incredibly low distortion on some meter and give that circuit to 100 different people to implement it as an amp.........Since there are so many variables that change the sound.....you would end up with 100 amps that all sound different from each other. I have taken Bruno’s basic amp design’s and made them better sounding by changing and eliminating certain parts. These changes cannot be measured. You just change the AC inlet on an amp to a better one and you have better sound. This game is infinite!

There is no such thing as "distortion below audibility". What we hear is WAY way more than what we can measure. You can just damp the heatsink of an amp and you will hear lower the sonic distortion.....no measurement difference. You can remove the steel plate and bolt from a toroid power transformer and mount it off the chassis on some wood and you will hear a more open sound.....again, no difference in distortion measurements, but way lower sonic distortion. This game is not simple. If you think it is that simple then why would you post on a forum where most everyone listens to things to determine what they like, want, and what they think is lowest distortion? Why are you an audiophile if you believe that all you need is numbers? Just buy a 1977 Sansui Receiver and a pair of Advents and be done with it.