2. analog
  3. 174785-98100

Linear Power Supply?

Can someone tell me exactly what an LPS supposedly does to improve the operation of a turntable motor? Does it run more precisely at a given speed? Does it vibrate less? I have a SOTA Eclipse motor with Condor and Roadrunner. SOTA is coming out with an LPS option which they say is better than the SMPS wall wart, but I want to know exactly how it’s better. If less noise in my system is the benefit, then I believe I already have that addressed because I plug it into my PS Audio P20 power regenerator.

earthtones
dekay's avatar
dekay
5,556 posts
 

Viggen:

Welcome back.

Getting ready to open up my last NIB Sharp SD-EX111 for my wife to use in the spare bed/computer room (crossing my fingers that it's still operational after all these years).

DeKay

viggen
838 posts
 

dekay old friend! 

you have a very very good memory.  i think we chatted about that amp prrobably more than 10 yrs ago.  time flies.

lewm
13,027 posts
 

The LPS perhaps keeps the platter spinning a bit longer because its capacitors hold charge for several seconds after unplugging the unit. Until the DC voltage falls below a certain threshold, the platter will keep spinning. No magic.

aj523
373 posts
 

Linear Tube Audio sells a separate LPS for around $600 to replace wall warts in electronics so I bought one for my turntable. I think it improved the sound a lot but not entirely sure as these things go…but I like the tweak and it makes me feel good.

 

sokogear
1,095 posts
 

Rega tables have optional PSUs fairly down their product line and they are standard on their top 3 models I believe. The PSUs plug into a wall wart.  A rudimentary speed measurement (with an iPhone on the platter) showed RPMs of 33.28 and 44.98 (.15% and .044%). I suspect with that weight removed it would speed up a tiny bit, but I would challenge anyone to detect the difference.

I put a LPS into my phono stage and it probably made a difference statistically, but I couldn't hear it, but it wasn't an A-B comparison. That would be really tough to do. The manufacturer told me if it was his brother in law, he would tell him to do it. He didn't mention if he liked his brother in law :-)

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