Can SMPS based preamps/amps sound organic ?

@pani
As stated above SMPS has come a long way. But I can think of a reason a LPS may sound better in your home. One thing is a transformer will filter out or reduce incoming high frequency electrical noise where especially older SMPS will pass it through.

That said I'm the type of listener who stopped relying on specs and measurements when deciding what to buy. At least for me it left biased one way or the other.

Given the positive and encouraging comments here with regard to SMPS  what explains the continued popularity  of linear power supplies?  It leads me to suspect that they must have some significant inherent justification. Or is it just stubbornness on behalf of many builders?

I'd love to 'switch' (if you will pardon the expression) to SMPSs but to get the voltages we need for our products simply isn't in the cards unless we buy a lot of supplies, costing 10s of thousands of dollars. For a small business its not practical unless the power supply is conveniently available off-the-shelf. So traditional supplies will be with us a long time.

But I can think of a reason a LPS may sound better in your home. One thing is a transformer will filter out or reduce incoming high frequency electrical noise where especially older SMPS will pass it through.

Modern SMPS often contain Power Factor correction module, basically a huge inductor and capacitor, making supply appear as resistive load but also filtering any line noise. They are also line and load regulated with fast response that will eliminate in tandem with supply capacitors most of the line noise. In contrast, most of linear power supplies draw supply current in short spikes of high amplitude that "travel" thru the power cord and pollute everything around. The only thing "linear" about "linear power supplies" is that they are unregulated. I would suggest replacing word "linear" with "unregulated" since they (most of them) operate as primitive unregulated switchers - nothing linear about it.

@kijanki
That’s for the clarification. I’m going by what I learned in school a very long time ago. ;-)

Just another reason I rarely rely on specs and measurements. I trust my ears the most. Ive heard stuff that has great specs and measurements that I just don't care for. And others that look horrible on paper but sound great (at least to me). Visa versa too.