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Matrix Quattro amp: unboxing and initial impressions - Page 7

post #91 of 101
2/7/12 at 6:00pm

Very nice roll of toilet paper ;)
 

Quote:
Originally Posted by chaosallied View Post

my balanced setup just arrived from TamAudio yesterday... that is the Matrix Mini-i, Quattro amp, high quality XLR and balanced HD650 cable... very nice guy and good seller...

out-of-the box, it seems like my HD650 is on steriods! the soundstage has widened significantly, the bass is tighter, i hear a lot more detail, the dynamics has improved... burn-in in progress

 

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post #92 of 101
2/7/12 at 9:00pm

^thanks, it contributes to the better sound quality :)

btw, will it be a concern putting the Mini-i on top of the Quattro?

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post #93 of 101
2/7/12 at 10:06pm

I would normally want more airflow around an amp - so either it on top, or add some isolating feet as spacers. 

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post #94 of 101
2/7/12 at 11:12pm

I've been using the mini-i on top of the Quattro from 3 months ago.

Heat was a concern but there's no problem so far.

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I use it about 3 hours max a day, turned off for the rest of time.  And I don't use it everyday.

It does get a bit hot but about the same as an NFB-12 if that gives an idea.

 

The Quattro can't go on top of the mini-i because it's longer.

There's still a few mms of space between the mini-i and the LCD so I might put in spacers today.. good idea.

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post #95 of 101
2/8/12 at 12:45am

i'm actually thinking of isolation feet or DIY spacers as well... will give my combo those as soon as i find/do some =)

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post #96 of 101
2/8/12 at 4:53am
Thread Starter 

Someone who borrowed my Quattro amp and DAC mentioned that there seemed to be some hum when stacking the two - but only when using sensitive IEMs. The Mini-i could be different though, and the issue was not present when using anything besides IEMs.

 

BTW, I hadn't realized that the Mini-i was such a good match for the Quattro. Looks very nice together! Especially when they are both in silver like the pic above. 

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post #97 of 101
2/8/12 at 5:24am

just did a DIY feet from scrap materials from the house biggrin.gif

 

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post #98 of 101
2/9/12 at 7:28am
Thread Starter 
Quote:
Originally Posted by chaosallied View Post

just did a DIY feet from scrap materials from the house biggrin.gif

 

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Nice! Is that styrofoam and shelf liner? 

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post #99 of 101
2/9/12 at 2:54pm
Quote:
Originally Posted by project86 View Post



Nice! Is that styrofoam and shelf liner? 


it's a spare packing stuff similar to the protective packing stuff that came with the mini-i and quattro... the blue is an anti-slip mat haha

 

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post #100 of 101
5/1/12 at 1:12am

Is there a big improvement between running the full balanced setup with the dac, and just running balanced with the single RCA  inputs?

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post #101 of 101
12/13/12 at 10:17am

Hi guys!

 

I have just swapped the OPA604s for 2 sets of OPA637s that I had lying around....

 

2 of them are OPA637AP and 2 are OPA637BP....not sure how the specs differ but I fitted them

 

So far it sounds very good...quite a bit more detailed than with the OPA604s....will need a few weeks to really make up my mind.

 

Anyone else tried rolling opamps?

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