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Matrix M-Stage amp review: simple, cheap, and excellent. - Page 326

post #4876 of 4888
Quote:
Originally Posted by WhiskeyJacks View Post

That is what I have read from a lot of people, so I thought I should be good with communication but I honestly do not think I can use the Holiday as an excuse because it has been a couple weeks. I really hope it makes it trhrough china air just in an envelope... I get concerned with the pins and them not being in a little box or something, I am hoping it comes quick and safely, I know it is only 10 dollars but for me 10 dollars is an awful lot for me. Anyways It is okay because put the 2227 in my Cmoy bb that had the NE5532 and it sounded good really decent separation detail, impact, and more musicality than the OPA2134 without being as dark sounding, that is the best way I can describe the opa2134 is dark and thick like syrup if that makes any sense. I ended up putting the NE5532 in the M-stage for now and I do like the sonic differences quite a bit, I have a ne5532 in other portable the Gemini Doctor's GemTune Ws1.2 bluebird, Which sounds a lot better than the price I got it for.

I hope it works out at least. 

That's what I find:
The OPA2134 is a bit dark sounding.
Your description of the NE5534 is similar to my opinion of the LM4562.
I haven't heard the NE5534 in the Matrix so I can't compare it to the LM4562 in the Matrix.

When I ordered my Matrix Quattro amp from Tam Audio, it took 12 days to get to Canada, shipping was free so I have no complaints, free shipping usually means slow shipping!
I also had an LM4562 in the order, the packaging was good.
post #4877 of 4888
Quote:
Originally Posted by Chris J View Post


That's what I find:
The OPA2134 is a bit dark sounding.
Your description of the NE5534 is similar to my opinion of the LM4562.
I haven't heard the NE5534 in the Matrix so I can't compare it to the LM4562 in the Matrix.

When I ordered my Matrix Quattro amp from Tam Audio, it took 12 days to get to Canada, shipping was free so I have no complaints, free shipping usually means slow shipping!
I also had an LM4562 in the order, the packaging was good.

Yeah that is what I mean the NE5534 I have a habit of putting 32, anyways it sounds good for the most part may be lacking some details in some ways but honestly it is pretty hard to tell. I think the bass sounds nicer with the HD600, and I feel as though the tonality of that chip with the Matrix in combination with the Matrix sounds good. I am glad to know then thanks for letting me know the time it takes so I have a general idea at least. I am enjoying the OPA2227 in the Cmoy more than I thought I would I definitely like it more than the OPA2134, and it is more detailed in it's presentation than the NE5534 but that the 5534 has a bit more musicality than the other. It is a good trade off for when you want a particular sound from each.

post #4878 of 4888
Quote:
Originally Posted by Chris J View Post


That's what I find:
The OPA2134 is a bit dark sounding.
Your description of the NE5534 is similar to my opinion of the LM4562.
I haven't heard the NE5534 in the Matrix so I can't compare it to the LM4562 in the Matrix.

When I ordered my Matrix Quattro amp from Tam Audio, it took 12 days to get to Canada, shipping was free so I have no complaints, free shipping usually means slow shipping!
I also had an LM4562 in the order, the packaging was good.

So still waiting for the LM4562 to hit the states, probably will happen after this weekend or so, which is fine. I ended up receiving a LME49990 x2 soic to dip8 adapter. It sounds very nice, for initial impressions I have to say it has great sonic quality, kind of laid back and natural but capable of delivering both punch in bass, along with detail and musicality across the spectrum. The sound stage opens up from the NE5532, and the OPA2134 is darker than both of these. I think the LME49990 chips have more detail and are my preferred chip so far in comparison of OPA 2134, 2227, NE5532. The only other chip that has not been tested against it is the LM4562 which I will be getting in a couple weeks probably from what I heard about shipping time was shipped out. I am looking forward to see the differences and similarities between the two. I also am looking forward to getting some more time with the LME49990s 

post #4879 of 4888
Quote:
Originally Posted by Chris J View Post


That's what I find:
The OPA2134 is a bit dark sounding.
Your description of the NE5534 is similar to my opinion of the LM4562.
I haven't heard the NE5534 in the Matrix so I can't compare it to the LM4562 in the Matrix.

When I ordered my Matrix Quattro amp from Tam Audio, it took 12 days to get to Canada, shipping was free so I have no complaints, free shipping usually means slow shipping!
I also had an LM4562 in the order, the packaging was good.

The LM4562 has arrived in the States, New york and supposedly was processed through IPS facility and is now in Flushing NY. So hopefully the post will get it here by next week sometime being that New York is a state away, but we will see USPS can take a bit with international. I will be comparing the two sonic signatures of the LME49990 x2 and the Dual op amp LM4562 and seeing if I am come to the same conclusion as you as far as sound and preference being that we both felt the OPA2134 too dark for our tastes. 

post #4880 of 4888
Quote:
Originally Posted by Maxvla View Post

http://www.head-fi.org/t/475618/matrix-m-stage-amp-review-simple-cheap-and-excellent/3855#post_9328852

Find a new listing of the same part and you are good to go.



 

Quote:
Originally Posted by drews View Post
This is the one you want:


 

http://www.ebay.com/itm/180672233284


 

Drew


Thank you guys for pointing me in the right direction, I finally got my new volume knob and it looks and feels pretty awesome.

Cheers



 


Edited by willmax - 8/18/14 at 7:28am
post #4881 of 4888

So I got my LME 4562 from Tam's audio, and it was packaged well for a chip, only problem is that the opamp was taped thoroughly around and the removing the tape with an exacto knife when pull the top layer off the Opamp came with it and there was some bent pins... I said well hopefully they do not break but unfortunately have to bend them back was a delicate process and I did the best that I could. First tried it out in the Cmoy bb and I can say I definitely like this chip off the rip. I prefered it to the opa2227 and everything else tried in the Cmoy. Now I just plugged the LME4562 into the Matrix, and the LM49990 x2 in the cmoy,This is honestly some the better and or best chips i have used. They sound great in both Cmoy bb, and Matrix M-stage. Honestly. I do think the LME4562 is more forward and bit in your face in the matrix more so, and the maybe in good way or bad way at times. LM49990 is a more laid back and detailed chip and has good sound stage and smooth top end. They both sound great and are very detailed, both have nice sound stages LM49990 maybe a bit wider and more laid back but the LME4562 is fantastically intimate when listening to music from some singers like Adele. Both are fantastic options, and cheaper ones to the OPA627 route. Just make sure if you go with the LM49990 route you get the two mono chips on an a SOIC to dip8 adapter.

 

EDIT: should of posted this already, thanks Chris J once again on solid advice. and I can honestly say I am not sure which I prefer between the two, but I am keeping the LM4562 in there for now, if that says anything.


Edited by WhiskeyJacks - 8/18/14 at 5:56pm
post #4882 of 4888
Quote:
Originally Posted by WhiskeyJacks View Post

So I got my LME 4562 from Tam's audio, and it was packaged well for a chip, only problem is that the opamp was taped thoroughly around and the removing the tape with an exacto knife when pull the top layer off the Opamp came with it and there was some bent pins... I said well hopefully they do not break but unfortunately have to bend them back was a delicate process and I did the best that I could. First tried it out in the Cmoy bb and I can say I definitely like this chip off the rip. I prefered it to the opa2227 and everything else tried in the Cmoy. Now I just plugged the LME4562 into the Matrix, and the LM49990 x2 in the cmoy,This is honestly some the better and or best chips i have used. They sound great in both Cmoy bb, and Matrix M-stage. Honestly. I do think the LME4562 is more forward and bit in your face in the matrix more so, and the maybe in good way or bad way at times. LM49990 is a more laid back and detailed chip and has good sound stage and smooth top end. They both sound great and are very detailed, both have nice sound stages LM49990 maybe a bit wider and more laid back but the LME4562 is fantastically intimate when listening to music from some singers like Adele. Both are fantastic options, and cheaper ones to the OPA627 route. Just make sure if you go with the LM49990 route you get the two mono chips on an a SOIC to dip8 adapter.

EDIT: should of posted this already, thanks Chris J once again on solid advice. and I can honestly say I am not sure which I prefer between the two, but I am keeping the LM4562 in there for now, if that says anything.

Hey no problem!
You are making me lust after an LM49990!
I have an LM4562 that I plan on installing in my Matrix Quattro amp when I get a rainy afternoon.
C.
post #4883 of 4888

What's different about the Tam op-amps?  Are they different from the plain old TI ones?  http://www.digikey.com/product-search/en/integrated-circuits-ics/linear-amplifiers-instrumentation-op-amps-buffer-amps/2556125?k=lm4562na


Edited by sandab - 8/21/14 at 8:18pm
post #4884 of 4888
Quote:
Originally Posted by sandab View Post
 

What's different about the Tam op-amps?  Are they different from the plain old TI ones?  http://www.digikey.com/product-search/en/integrated-circuits-ics/linear-amplifiers-instrumentation-op-amps-buffer-amps/2556125?k=lm4562na

I ordered one of their op627 class A mods with the original M Stage. What I got looked ok but sounded terrible. I never went to the trouble of ordering the same opamps from another source but I always suspected the ones I got from Tam. I wound up using a very different solution. Their equipment is a wonderful value but I would not order opamps from them again.

post #4885 of 4888
Quote:
Originally Posted by WhiskeyJacks View Post
 

So I got my LME 4562 from Tam's audio, and it was packaged well for a chip, only problem is that the opamp was taped thoroughly around and the removing the tape with an exacto knife when pull the top layer off the Opamp came with it and there was some bent pins... I said well hopefully they do not break but unfortunately have to bend them back was a delicate process and I did the best that I could. First tried it out in the Cmoy bb and I can say I definitely like this chip off the rip. I prefered it to the opa2227 and everything else tried in the Cmoy. Now I just plugged the LME4562 into the Matrix, and the LM49990 x2 in the cmoy,This is honestly some the better and or best chips i have used. They sound great in both Cmoy bb, and Matrix M-stage. Honestly. I do think the LME4562 is more forward and bit in your face in the matrix more so, and the maybe in good way or bad way at times. LM49990 is a more laid back and detailed chip and has good sound stage and smooth top end. They both sound great and are very detailed, both have nice sound stages LM49990 maybe a bit wider and more laid back but the LME4562 is fantastically intimate when listening to music from some singers like Adele. Both are fantastic options, and cheaper ones to the OPA627 route. Just make sure if you go with the LM49990 route you get the two mono chips on an a SOIC to dip8 adapter.

 

EDIT: should of posted this already, thanks Chris J once again on solid advice. and I can honestly say I am not sure which I prefer between the two, but I am keeping the LM4562 in there for now, if that says anything.

 

LM4562 rocks with a 0.1uF ceramic C0G/NP0 cap across its power pins.  Solder one cap end to pin 4, then the other to pin 8, et voila!

 

Even better is to add a matched pair of caps and ground them just like what Audio-gd opamps have.  It would look like what one guy demonstrated in the Little Dot I+ with LME49720 (same chip as LM4562).  He used what look like video film caps, which I would never recommend for an audio opamp, but a pair of ceramic 0.1uF capacitors will do.  However, you have to take into account that circuit components tend to vary from their stated values, so you would have to buy a handful of caps, then find two matching ones using a multimeter.  If the caps are mismatched, then the oapmp will heat up enough to grill a steak.

 

LME49990's datasheet recommends tantalum and ceramic caps.

 

I just received some old Soviet K42-Y2 PIO film capacitors, now I'll have fun trying these out.  They're said to be one of the best film caps for these kinds of modifications.  I am extremely fond of Vishay MKP1837 and BFC416 polypropylene capacitors as it is for this stuff.

 

Although Class A biasing can also improve the sound with some chips, modern opamps are already running Class A internally anyway, so additional caps on the power pins is much more effective.


Edited by Mad Max - 8/23/14 at 9:45am
post #4886 of 4888
Quote:
Originally Posted by Mad Max View Post
 

 

LM4562 rocks with a 0.1uF ceramic C0G/NP0 cap across its power pins.  Solder one cap end to pin 4, then the other to pin 8, et voila!

 

Even better is to add a matched pair of caps and ground them just like what Audio-gd opamps have.

My newly arrived M-Stage HPA-2 has been sitting since yesterday looping white noise through a pair of K702s.  The K702's need the burn-in, so it's good. :)

 

Ordered replacement knobs from China; they'll take a couple of weeks to get here.  Got a sandblasted silver and a black, to see which I like better.  At < $5 ea it's hard to go wrong...

 

Received a package from Digi-Key today with two LM4562NA's in a 2-inch tube.  I didn't check the datasheet and for some reason fubared it and thought they're monos, but they're of course a dual drop-in replacement.  I almost feel bad ordering two $3 opamps from digikey, since someone had to stick them in a tube, put the tube in a static ziploc bag, package and box it, and hand it off to USPS.  (Which charged, I think $2.35 in postage.) Also ordered the class A biased OPA627 carrier board from Tam, and an LT1364CN on eBay.  Once burnt in it's time for an evening of beer and opamps...

 

I'm surprised something this low bandwidth would produce power and ground noise enough to be worth decoupling...  It must really be swinging! :)

post #4887 of 4888
Quote:
Originally Posted by willmax View Post



 


Thank you guys for pointing me in the right direction, I finally got my new volume knob and it looks and feels pretty awesome.
Cheers



 

Is that the Yulong D200? The volume knob looks way better than the one on my D100-II
post #4888 of 4888
Quote:
Originally Posted by sandab View Post
 

My newly arrived M-Stage HPA-2 has been sitting since yesterday looping white noise through a pair of K702s.  The K702's need the burn-in, so it's good. :)

 

Ordered replacement knobs from China; they'll take a couple of weeks to get here.  Got a sandblasted silver and a black, to see which I like better.  At < $5 ea it's hard to go wrong...

 

Received a package from Digi-Key today with two LM4562NA's in a 2-inch tube.  I didn't check the datasheet and for some reason fubared it and thought they're monos, but they're of course a dual drop-in replacement.  I almost feel bad ordering two $3 opamps from digikey, since someone had to stick them in a tube, put the tube in a static ziploc bag, package and box it, and hand it off to USPS.  (Which charged, I think $2.35 in postage.) Also ordered the class A biased OPA627 carrier board from Tam, and an LT1364CN on eBay.  Once burnt in it's time for an evening of beer and opamps...

 

I'm surprised something this low bandwidth would produce power and ground noise enough to be worth decoupling...  It must really be swinging! :)

 

55MHz LM4562 is not low bandwidth, lol, and especially not LT1364, OPA2134 is low bandwidth.  I didn't know that postage from Digikey could go so low again, thanks!

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