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Matrix M-Stage amp review: simple, cheap, and excellent. - Page 261

post #3901 of 4892
Quote:
Originally Posted by rawrster View Post

My D18 is on the warmer side but I wouldn't call it dark and it sounds fine. The main concern with the Mjolnir is as long as your dac is good then it should be fine. The Mjolnir while it does tip towards the more aggressive side reveals what is lacking in the dac if you have the proper headphones of course. However judging from your headphones they probably are good enough although my preference for the HE6 would not be the Mjolnir but the pair does sound quite good.

 

Also that balanced amp he has selling is interesting. Not many of those amps come up and definitely not balanced. I never got a hold of them but don't really need one now. The only amp I can think of I would buy right now is if a GS-X made it to the FS. One came up a few weeks ago and don't think that's happening again for a very long time.

 

I was very impressed with the Mjolnir when I heard it because of that aggressive sound. The detail retrieval was just so refined, and the sound decay was really impressive. Of course I only got to hear it at a meet when it was being first debuted so there was a line and I didn't want to take too much time. Does it do OK with so-so (e.g. mainstream) recordings? One problem I have with the HE-6 is that it's hard to just hit shuffle and listen. Those headphones just rip apart anything that isn't well recorded. 

 

I've been trying to scrap around and find any information on that darned unit with very little to no luck. All the comments are for SE, and from 2008 or so.

 

 

Keeping things relevant to the Matrix. A concern I have with the Mjolnir is that some people now talk about the "three blob" sound stage. I think the Matrix has a good "music upfront and dissipates to the side" type sound. Any comparison on the sound stage? Not to be too demanding :)  Just any thoughts you have when you have some time. 

post #3902 of 4892
Quote:
Originally Posted by elwappo99 View Post

 

I was very impressed with the Mjolnir when I heard it because of that aggressive sound. The detail retrieval was just so refined, and the sound decay was really impressive. Of course I only got to hear it at a meet when it was being first debuted so there was a line and I didn't want to take too much time. Does it do OK with so-so (e.g. mainstream) recordings? One problem I have with the HE-6 is that it's hard to just hit shuffle and listen. Those headphones just rip apart anything that isn't well recorded. 

 

I've been trying to scrap around and find any information on that darned unit with very little to no luck. All the comments are for SE, and from 2008 or so.

 

 

Keeping things relevant to the Matrix. A concern I have with the Mjolnir is that some people now talk about the "three blob" sound stage. I think the Matrix has a good "music upfront and dissipates to the side" type sound. Any comparison on the sound stage? Not to be too demanding :)  Just any thoughts you have when you have some time. 

 

 

The HE6 and HD800 have similar detail but the HD800 might have slight edge but hard to tell. It's a bit more obvious with the HD800 but they both like good quality over poor quality files or recordings. I do have a good amount of mainstream albums and I don't really have a big issue with the HE6 or HD800. They could be better but not to the point where they are unlistenable. Also imo the Mjolnir is a very good amp. I can be perfectly happy with the HD800 or HE6 on the Mjolnir although the HE6 does better on speaker amps.

 

I am not really big on sound stage but I haven't really heard any headphone that doesn't have mostly left or right. That is part of the limitations to headphones imo regardless of amp.

post #3903 of 4892
Quote:
Originally Posted by Chris J View Post

 

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

 

I am very happy with it. The difference is noticeable, though I am not good at describing sound. Let's just say it's an upgrade. Thanks for the info, my man... beerchug.gif

post #3904 of 4892

Has anyone tried the LME49710?

 

http://www.ebay.com/itm/251019575649

post #3905 of 4892
Quote:
Originally Posted by Change is Good View Post

Has anyone tried the LME49710?

 

http://www.ebay.com/itm/251019575649


LME49710 is a single channel version of LME49720 which is the same opamp as the LM4562 with a different model number stuck on it.

 

They are available in TO-99 metal cans though (which the lm4562 are not), which are said to be better than the DIP or SOIC ones (solder them to an adapter).

post #3906 of 4892
Thanks! I'm a noob so please forgive my dumb questions.

Also, when I opened mine I noticed two stock opamps in different locations. Am I supposed to switch both? I only purchased one LM4562 not knowing there were two and only switched the one closest to the knob (which is line 1 i think).

I have the new USB vesrion, btw.
post #3907 of 4892
Quote:
Originally Posted by lawrywild View Post


LME49710 is a single channel version of LME49720 which is the same opamp as the LM4562 with a different model number stuck on it.

They are available in TO-99 metal cans though (which the lm4562 are not), which are said to be better than the DIP or SOIC ones (solder them to an adapter).

I suspect it sounds the same as the LM4562.
Placebo can be a powerful force.
post #3908 of 4892
Quote:
Originally Posted by lawrywild View Post


LME49710 is a single channel version of LME49720 which is the same opamp as the LM4562 with a different model number stuck on it.

 

They are available in TO-99 metal cans though (which the lm4562 are not), which are said to be better than the DIP or SOIC ones (solder them to an adapter).

 

 

Quote:
Originally Posted by Change is Good View Post

Has anyone tried the LME49710?

 

http://www.ebay.com/itm/251019575649

 

I have the LME49720HA in the TO-99 on an adapter currently in mine and love it. To my ears it is a lot smoother than the OPA627 class A biased (which I find a touch too "hot" and slightly grainy). I am not the best at describing differences, but I felt it made the sound a bit more "tube like" without adding noise or loose bass. I would say "SMOOTH" with tight bass and good highs.

 

Not sure if it's an issue with these, but I bought from a known seller in the US. I would be careful of conterfeits.


Edited by dogwan - 4/14/13 at 1:44pm
post #3909 of 4892
Quote:
Originally Posted by Change is Good View Post

Also, when I opened mine I noticed two stock opamps in different locations. Am I supposed to switch both? I only purchased one LM4562 not knowing there were two and only switched the one closest to the knob (which is line 1 i think).

I have the new USB vesrion, btw.

 

Someone please answer this for me. I am new to this and would like to know

post #3910 of 4892
Quote:
Originally Posted by Change is Good View Post

 

Someone please answer this for me. I am new to this and would like to know

 

I have an older M Stage, but the Op Amp for the headphone amp is close to the front of the amp. There are two large blue capacitors slightly behind it.

They look like blue plastic boxes.

 

I assume you don't use the USB input?

post #3911 of 4892
Quote:
Originally Posted by Chris J View Post

 

I have an older M Stage, but the Op Amp for the headphone amp is close to the front of the amp. There are two large blue capacitors slightly behind it.

They look like blue plastic boxes.

 

I assume you don't use the USB input?

 

Thank you for the response, Chris

 

I researched enough to know that was the one I was supposed to change, and I did so. There was another stock OPA 2134 opamp that I noticed, however, across from it diagonally on the other side. I am assuming that is the opamp for the USB?

 

I do use the USB for its DAC... but only on certain occasions.

post #3912 of 4892
Quote:
Originally Posted by Change is Good View Post

Thank you for the response, Chris

I researched enough to know that was the one I was supposed to change, and I did so. There was another stock OPA 2134 opamp that I noticed, however, across from it diagonally on the other side. I am assuming that is the opamp for the USB?

I do use the USB for its DAC... but only on certain occasions.

Mine does't have USB, so I suspect the other Op Amp must be part of the USB DAC circuit.
post #3913 of 4892

I remember someone mentioned that the 470uF capacitors in the matrix are overkill. So is  it okay, if i were to replace the two electrolytics on either side of the opamp (the one behind the volume knob), to use 330uF ones? I wanna try the Elna Silmic II but it seems that 330uF ones will fit easily whereas their 470uF ones might be too large to fit...

Also, what does the red WIMAs between those two electrolytics do? I read somewhere those are 0.022uF ones.. but mine says 0.15uF...

post #3914 of 4892
Quote:
Originally Posted by LCMusicLover View Post

If you dig back about 5 pages, you'll see that I had the same experience using 1964Ears V.3s with this amp -- low hum when no music is playing, and during very quiet passages. It doesn't matter what gain the amp is set for, or what level the volume knob is set to -- hum is always the same.

 

It appears to be a feature of this amp. I picked an Op627, which didn't help.  Seems to be always there , but only noticeable with very sensitive phones (my 1964Ears are 117db/mW). Just loud enough to be annoying.

 

I ended up getting a RSA Shadow, which I love. 

 

Thanks for the replies LCMusicLover, hifimanrookie and Chris J.  I knew I had read about someone else having the same experience but couldn't remember how many pages back it was.

 

Nice to know I'm not crazy and especially that there isn't an issue with the amp.

 

As I said, it isn't noticeable with my open phones, just the closed ones.  Guess it is more designed for those.  Not really an issue since you can only hear it when nothing is playing.

post #3915 of 4892

I finally got my black knob in the mail, today.

 

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