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Matrix M-Stage amp review: simple, cheap, and excellent. - Page 247

post #3691 of 4781
Quote:
Originally Posted by Taowolf51 View Post

One thing I notice is that when running as a headphone amp, the M-Stage barely gets warm, but when running as a preamp, it gets quite warm. Admittedly, it is on top of my power amp, but I can't imagine it making that much of a difference (especially considering that it actually runs warmer than the power amp).

It should run just as hot as a pre amp as it does as a headphone amp.
post #3692 of 4781
Quote:
Originally Posted by Chris J View Post


It should run just as hot as a pre amp as it does as a headphone amp.

 

Hm, maybe I'll try moving the m-stage. It definitely gets much warmer when I use it as a preamp.

post #3693 of 4781

What is the difference between opamp 627 and 797?

post #3694 of 4781
Quote:
Originally Posted by Chris J View Post


The v2.1 runs cooler because it has ventilation holes!
Ciao.

So thats what those things do. smily_headphones1.gif


Edited by nickwin - 2/11/13 at 6:20pm
post #3695 of 4781
Quote:
Originally Posted by Chris J View Post


The v2.1 runs cooler because it has ventilation holes!
Ciao.

I read on a review those holes dont work..heat goes up..not to side..but hey..i didnt say it..i read it..biggrin.gif

post #3696 of 4781
Quote:
Originally Posted by hifimanrookie View Post

I read on a review those holes dont work..heat goes up..not to side..but hey..i didnt say it..i read it..biggrin.gif

 

Heat does rise, but saying that holes in the side of the enclosure do nothing is a bit ridiculous.

post #3697 of 4781
Quote:
Originally Posted by Taowolf51 View Post

 

Heat does rise, but saying that holes in the side of the enclosure do nothing is a bit ridiculous.

The guy saying it did say that he didnt understand whythe holes were not on top instead of on sides..as that would help better..but as i said..these are not my words.. biggrin.gif

post #3698 of 4781
Quote:
Originally Posted by nickwin View Post

So thats what those things do. smily_headphones1.gif

They also give the amp an airiier sound! wink.gif
post #3699 of 4781
Quote:
Originally Posted by Chris J View Post


They also give the amp an airiier sound! wink.gif

biggrin.gif

post #3700 of 4781

May be a strange question, but I just opened this to toss around some opamps. Has anyone played with the voltage pots on these? That is a SUPER fun tweak to play with. 

post #3701 of 4781
Quote:
Originally Posted by elwappo99 View Post

May be a strange question, but I just opened this to toss around some opamps. Has anyone played with the voltage pots on these? That is a SUPER fun tweak to play with. 

Unfortunatelly I don't have the schematics. What exactly do you believe those pots do?

post #3702 of 4781
Quote:
Originally Posted by muxamed View Post

Unfortunatelly I don't have the schematics. What exactly do you believe those pots do?

 

They should change the voltage in circuit. Wayyy back when I had a Roc and Phoenix from Audio-gd changing the voltage drastically afftected the sound overall. 

post #3703 of 4781

Hi got my opa627ap  today im in the uk took 11 days to get hear.Great website now for burn in do op amps take time to sound there best? Thank you for the help.
 


Edited by i love audio - 2/14/13 at 12:20pm
post #3704 of 4781
Quote:
Originally Posted by elwappo99 View Post

 

They should change the voltage in circuit. Wayyy back when I had a Roc and Phoenix from Audio-gd changing the voltage drastically afftected the sound overall. 


OK. It would be convenient to know which exact voltages one can alter with those pots. Do you know if there is a schematics for this amp somewhere to be downloaded?

post #3705 of 4781
Quote:
Originally Posted by elwappo99 View Post

May be a strange question, but I just opened this to toss around some opamps. Has anyone played with the voltage pots on these? That is a SUPER fun tweak to play with. 

 

I'm not too sure what you are talking about!confused_face_2.gif

 

Are you talking about the "voltage pots" on a discrete Op Amp?

 

If you are, then you are probably hearing more distortion, less distortion.

Some of the pots may affect DC offset, you really don't want to adjust those, unless you want to reduce DC offset.

 

Note to Mr. "I Love Music":  an Op Amp should take approx. 1/2 an hour to warm up.

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