pma

I did the homework on op-amp susceptibility to surrounding EMI several times, since 2007. I use a circuit with noise gain 86 dB, to...

This is typical, and says why op-amps should not be swapped without measurements. Bypass capacitors, JFET vs. BJT, PCB design, case...

Yes, it looks like a very nice little phono preamp. I am not surprised it sounds good. Yes, this is absurd. I think you have...

I recommend trying some critical thinking. Who benefits from the two samples sounding different? The answer is the reputation of the...

Yeah, such difference will modulate resulting frequency response depending on complex impedance of the speaker...

10 feet of 24 AWG is 0.5134 ohms; 18 AWG is 0.1277 ohms (for two wires, plus and minus)*. That is a significant difference, natch...

You know - there is a big problem. If Amir has not enough knowledge in specific cases and uses wrong test method (I would name noise of...

There is a very good article in AudioXpress by Douglas Self with op-amp measurements...

No. Externally you do not have an access to necessary circuit nodes. Please do not try to oversimplify unsupported by both circuit...

Ivan knows about the issue. Unfortunately it is not easy to "recap" because of limited space. The part needed would be too big. It makes...

And hell (unfortunately), distortion rises below 100Hz and if you try to measure SOTA preamps and amps with -120dB distortion, you are...

@3eaudio : you definitely got impressive performance from TPA3255. May I have 2 questions : - do you have output impedance vs. frequency...

Which can totally mess them up as the distances to their caps are more than crucial. Adding the adapters translates to miles for some of...

To show that op-amps usable for analog audio path have not improved much in the past 40 years. DIP adapters are the worst way to use...

Me too. I am 70 in a few weeks, I have tinnitus, but I can hear 14kHz with 100% success in a DBT. It is a curse, you know. Especially...