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

Dec 2, 2011 at 9:09 AM Post #2,146 of 5,176
It's a 30x22mm knob, I bought it off ebay. It's just a tad long, but I'm not complaining, it's a much better upgrade over the stock knob. Turning the knob requires much less effort and I can fine tune the volume a lot better now.
 
If the world were perfect, I think something around a 30x18 know would be more geometrically pleasing due to the long shape of the m-stage. I am very pleased with the results though 
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Dec 2, 2011 at 9:18 AM Post #2,147 of 5,176
Well, I'm about to buy a black M-Stage, and I already found a nice 40x22mm aluminium knob in black on eBay. I think it will also be a nice upgrade. If that 30x22 already looks (and feels) so good, to me, the 40x22 will be even better... 
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Quote:
eraserxiv said:
It's a 30x22mm knob, I bought it off ebay. It's just a tad long, but I'm not complaining, it's a much better upgrade over the stock knob. Turning the knob requires much less effort and I can fine tune the volume a lot better now.
 
If the world were perfect, I think something around a 30x18 know would be more geometrically pleasing due to the long shape of the m-stage. I am very pleased with the results though 
smily_headphones1.gif
.
Click to expand...



 
 
Dec 2, 2011 at 10:21 AM Post #2,150 of 5,176
It will fit on the alps potentiometer, but it won't sit completely into the hole that is cut out on the faceplate of the M-Stage.
 
Dec 2, 2011 at 3:53 PM Post #2,152 of 5,176
It looks like Ti is actually sending two OPA602BPs to me, so I'm going to wind up with a third extra OPA602 b/c I ordered one separately.
 
Does anyone want 1x OPA602BP?
 
 
 
Dec 3, 2011 at 12:41 AM Post #2,154 of 5,176


Quote:
chicolom said:
Thank you for the info and for the links Mad Max & francisdemarte!
 
The ADA4627-1B looks promising.
 
I just requested 2 ADA4627 samples from Analog Devices.  I'll see if they actually ship them.
 
  • So its 2x 4627's on a dual soic to dip 8 adapter?  One on top and one on bottom?
  • Is there any trick to assembling those adapters?  It looks like you just poke the pins through the PCB, but I can't really tell.
  • Looks like those adapters are tinned right? So shouldn't need extra solder - should just be easy to re-flow it.
  • There's no cons to doing the PSU bypassing on the ADA4627?  Besides looking ridiculous? 
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      I searched and found this link, and this one.  Not sure what you do with them though...
 
 
I guess I will leave out the Class A biasing if it doesn't benefit the newer opamps...
 
 
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Hey I just ordered some samples too! Went with the ADA4627-1BRZ's, can't wait to try it out.
 
So far I have played with the OPA627 in both class A and not. Preferred it non class A.
 
I also have a LME49720HA currently installed and am enjoying it very much. Much smoother and better low end punch than the OPA627's. As a side note the case doesn't get nearly as warm.
 
-Dogwan
 
 
 
Dec 3, 2011 at 5:22 AM Post #2,155 of 5,176


Quote:
dogwan said:
 
Hey I just ordered some samples too! Went with the ADA4627-1BRZ's, can't wait to try it out.
 
So far I have played with the OPA627 in both class A and not. Preferred it non class A.
 
I also have a LME49720HA currently installed and am enjoying it very much. Much smoother and better low end punch than the OPA627's. As a side note the case doesn't get nearly as warm.
 
-Dogwan
 
 
Click to expand...


I agree about the class A mod with the OPA627, it sounds much better without. (more relaxed, but in a good way). Returning from time to time to this op amp (in the BP version), I begin to realize how good it really is,  and how stable and easy to work with. Sometimes I think that perhaps it went a little out of fashion because it had become so popular and used by everybody, but (I continue thinking) when it comes to sound one must fight fashion!). Olaf
 
 
Dec 3, 2011 at 8:46 AM Post #2,156 of 5,176
Dec 3, 2011 at 3:37 PM Post #2,157 of 5,176
IMO LME49710HAx2 sounds more relax and warmer and more detailed than OPA627/637smx2 haha. 
 
 
Side note: ooh I have 637 posts, what a coincidence :D
 
Dec 3, 2011 at 9:25 PM Post #2,158 of 5,176


Quote:
xymordos said:
IMO LME49710HAx2 sounds more relax and warmer and more detailed than OPA627/637smx2 haha. 
 
 
Side note: ooh I have 637 posts, what a coincidence :D
Click to expand...


Yes, I agree.
 
Is working wonders with both the HD600's and a pair of nicely modded T50rp's.
 
 
Dec 4, 2011 at 7:50 AM Post #2,159 of 5,176
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