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Meier Audio Quickstep (also Stepdance and 2Stepdance) Discussion and Impressions Thread - Page 172

post #2566 of 2790
Quote:
Originally Posted by Jan Meier View Post
 

No, this one is NOT regulated!

 

DON'T USE IT!

 

12V output at 2 A load may well result in strongly increased voltages at just 40 mA load. Moreover, output voltage will be strongly rippled!

 

Jan

Oh thank you Jan. I love your fantastic amp I had it only two days and love it even more. I found this adapter in my storage and wonder if I can use it with lack of electronic knowledge. I will go and buy regulated one. In your manual guide you said 10 volt is recommended and how about Ampere is spacified that I will check exactly what I should get.

 

Thank you again. I'm listening Thriller of MJ SACD ripped through your fantastic amp.

 

Maii

post #2567 of 2790

Jan to the rescue - again.  I should refer all questions to you, Jan.  

 

My apologies!

 

Mike

post #2568 of 2790

The regulated PSU clearly have it written on them. Don't risk getting thing off ebay, just spend a little more and purchase from well respected audio shops and dont risk it. 

post #2569 of 2790
[IMG]

Hi sorry again I ask again may it disturbing you guy but I don't wanna ruin my amazing quick step. I have bought this adapter it says regulated but came to the question that on the package says I have to fit it in the right polarity position may you guys advise please have a look at the photo I attached. Thank you guys all the best.
post #2570 of 2790
Here is the adapter and it says regulated

post #2571 of 2790
Oh I see I check at the back end of the quickstep it is already indicate + - polarity where the input jack located. Thank you guys. Quickstep is the best portable headamp ever. smily_headphones1.gif he he
Edited by maii - 9/8/13 at 10:14am
post #2572 of 2790

Congratulations maii,

 

How does it sound with the adapter?  With some "switch-mode" adapters, not all of them, you might hear noise in the background.  If you don't hear any hum or hiss, then that adapter is fine, but a regulated "linear" adapter is what Jan recommends.

 

Mike

post #2573 of 2790
Hi Mike (zilch0md), thank you. I have switched it at 12 volt output and I did not hear any hum or hiss sound. I have also tried connect it with battery out like no battery inside only line in power from adapter and also no hiss or hum it works fine. I guess it's the right adapter no? I don't know much about electronic stuffs. What is linear and non linear different? Oh only I know that the sound out of quickstep is excellent still with battery or power from adapter.
Edited by maii - 9/8/13 at 8:44am
post #2574 of 2790

Linear the oldest . Houses a transformer that isolates the mains from the equipment. It produces a constant even output voltage . Problems that can occur is noise/ hum due to cheap smoothing components in the wall-wart. Bigger is usually better[bigger transformer] . Switch mode has no mains isolation transformer but is switched back and forth at a set frequency to produce a much higher  current than a linear wallwart. for its size . Which will be a lot smaller /lighter than a linear one. Problems are that a cheap one can cause harmonics being fed into the equipment . Not a good thing in high quality audio.and you can sometimes even hear it.So buy a linear one as advised above.   

post #2575 of 2790
Quote:
Originally Posted by duncan1 View Post
 

Linear the oldest . Houses a transformer that isolates the mains from the equipment. It produces a constant even output voltage . Problems that can occur is noise/ hum due to cheap smoothing components in the wall-wart. Bigger is usually better[bigger transformer] . Switch mode has no mains isolation transformer but is switched back and forth at a set frequency to produce a much higher  current than a linear wallwart. for its size . Which will be a lot smaller /lighter than a linear one. Problems are that a cheap one can cause harmonics being fed into the equipment . Not a good thing in high quality audio.and you can sometimes even hear it.So buy a linear one as advised above.   

 

Ah I see I learn a new thing "linear regulated power supply". It's like the one that sell together with Lisa of Thread audio. I have checked on internet there is one from clef audio the company from my country they made hi end product with reasonable price they have a linear regulated power supply 12 volt dc. I will get one. :) thank you guys. I'm happy listening Pavane of Ravel from quickstep.

post #2576 of 2790
I have the 15 volt wall adaptor a xp8000a regulated at 15volts and i find the xp8000a sounds better for some reason. So im gonna put my 15 v wall adaptor away.
post #2577 of 2790

Yeah, batteries are the cleanest, normally.  :D

post #2578 of 2790
I remember that some people run their high end stereo sets from big sets of car batteries instead of wall outlets because it sounds cleaner.
post #2579 of 2790
Quote:
Originally Posted by zilch0md View Post
 

Yeah, batteries are the cleanest, normally.  :D

 

I remember reading a few arguments before that a well regulated supply can actually be cleaner than batteries.

post #2580 of 2790
Quote:
Originally Posted by tsvo614 View Post

I have the 15 volt wall adaptor a xp8000a regulated at 15volts and i find the xp8000a sounds better for some reason. So im gonna put my 15 v wall adaptor away.

 

Hi is xp8000 linear regulated why it looks so small. I have search all linear regulated it's a big brick. This is the one I 'm going to get. output socket is made by order.

 

Here is how it looks the smallest I could find. Lisa one is small but relatively more expensive than quickstep itself ha ha.

 


Edited by maii - 9/8/13 at 11:32pm
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