It’s the type of noise that is so damaging with a SMPS. It’s akin to odd order harmonic distortion. Large amounts of even order harmonic distortion can be tolerated and sometimes even enjoyed, but odd order harmonics orders of magnitude lower can completely wreck a system. SMPS manufacturers and users of them like to tout the noise levels but what they always fail to discuss is that the noise in linear supplies is MUCH MUCH more benign that the noise from a SMPS.
Manufacturers like SMSP’s because they are cheap, and don’t weigh anything, thus it’s cheaper to ship product. Some years ago, and I’ve mentioned this before, John Ulrich and I were discussing if he should stop using the big toroidal based power supply in the Spectron amplifier in favor of a SMPS. I successfully talked him out of that possibly disastrous path. What was his reason? Sound? No. Noise level reduction? No. The reasons were cost and primarily weight. He knew it would hurt the sound but he told me his shipping cost to the Far East were very high and that was the main driving force behind the desire.
Ed Meitner tried it with the Bidat as an option. It was horrid! They dropped the SMPS option almost as quickly as they came out with it and no, I don’t care for any of the new EMM Labs gear with the SMPS. Note that when Andreas left EMM and started Playback designs he went with a linear supply.
Again, if you don’t hear the detrimental effects I hear with a SMPS that’s good for you.
If I plug my noise sniffer in near SMPS that thing goes off like a Geiger counter near Chernobyl, not so much with linear.
Ok, enough, I didn’t mean to hijack this and I apologize to the OP, I was just trying to answer comments that came my way.
We return you to your normal programming :)
Manufacturers like SMSP’s because they are cheap, and don’t weigh anything, thus it’s cheaper to ship product. Some years ago, and I’ve mentioned this before, John Ulrich and I were discussing if he should stop using the big toroidal based power supply in the Spectron amplifier in favor of a SMPS. I successfully talked him out of that possibly disastrous path. What was his reason? Sound? No. Noise level reduction? No. The reasons were cost and primarily weight. He knew it would hurt the sound but he told me his shipping cost to the Far East were very high and that was the main driving force behind the desire.
Ed Meitner tried it with the Bidat as an option. It was horrid! They dropped the SMPS option almost as quickly as they came out with it and no, I don’t care for any of the new EMM Labs gear with the SMPS. Note that when Andreas left EMM and started Playback designs he went with a linear supply.
Again, if you don’t hear the detrimental effects I hear with a SMPS that’s good for you.
If I plug my noise sniffer in near SMPS that thing goes off like a Geiger counter near Chernobyl, not so much with linear.
Ok, enough, I didn’t mean to hijack this and I apologize to the OP, I was just trying to answer comments that came my way.
We return you to your normal programming :)