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Matrix M-Stage amp review: simple, cheap, and excellent. - Page 259

post #3871 of 4895

I've tried the stock, the LM4562 and opa627 board. I noticed more of a difference with the 627 than the other two. It may seem to be a smidge brighter but I think it is because of the improved clarity. Its also smoother. The LM4562 is a little warmer but perhaps a little more edgy in the treble. Both are an improvement over stock.

Pinch of salt required because the differences are very subtle. 

post #3872 of 4895
Quote:
Originally Posted by Change is Good View Post

 

And how about opamp options. I am currently looking at an LM4562 and an LM49860. Good choices?

 

Edit: Ignore the knob link... just saw the prior post lol. But I do need feedback on my opamp choices. Thanks!

 

Big fan of LM4562.

I prefer this to the stock Op Amp and the various OPA627s.

I thought the OPA627 (Class A and non-Class A) was slightly muddier than the LM4562.

 

I like the clarity of the LM4562.

 

I'm happy with the size of my knob.


Edited by Chris J - 4/6/13 at 6:48am
post #3873 of 4895
Quote:
Originally Posted by Chris J View Post

 

I'm happy with the size of my knob.

Exactly. Size isn't everything.. As long as it does the job. 

post #3874 of 4895
Quote:
Originally Posted by Chris J View Post

 

Big fan of LM4562.

 

 

+1

post #3875 of 4895

LM4562 and a black knob it will be, then!!! biggrin.gif

post #3876 of 4895
Quote:
Originally Posted by Maxvla View Post

Ordered a black knob and a LT1364. Might get the OPA627 Class A bias board later, but going to try the LT first.

 

Good stuff, be sure to take a pic or two of the knob on the M-Stage!

post #3877 of 4895

I'm thinking about starting a knob appreciation thread ksc75smile.gif

post #3878 of 4895

You could probably find such a thread with a Google search blink.gif

post #3879 of 4895

I went ahead and ordered the LM4562 and a black knob, also... pretty stoked

post #3880 of 4895
Quote:
Originally Posted by LugBug1 View Post

Exactly. Size isn't everything.. As long as it does the job. 

I'm sure everyone understands that we are only talking about the M Stage, right?
post #3881 of 4895

Oooo the M-stage. *cough* yes yes thats right. redface.gif

post #3882 of 4895

Yes!

 

So feel free to post a picture of your knob!

 

Anyway....what were we talking about?

Oh yeah, Mr Change is Good, let us know how the LM4562 works out for you!


Edited by Chris J - 4/7/13 at 3:56pm
post #3883 of 4895

Does anyone know the capacitance of the two red WIMA caps along the input? (those ones on either side of the blue box caps)

Are these there to remove high frequency noise?

post #3884 of 4895
Quote:
Originally Posted by cans4dessert View Post

Does anyone know the capacitance of the two red WIMA caps along the input? (those ones on either side of the blue box caps)
Are these there to remove high frequency noise?

Hard to tell from your description where they are actually located, but I think you are referring to the caps in parallel with the input coupling caps, if I sound confused it's because my amp only has the big blue caps.

If they are, then they are for DC coupling and block very low frequency signals and do not filter out high frequency noise.
post #3885 of 4895
Oh I thought I read somewhere that the big box blue caps were the ones that block out low frquency signals. I guess I remembered it wrong.
So is it safe to just get rid of the red WIMAs that lay in parallel to those blue box caps?
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