[Jaab]

Hi there,
I recapped 2 amps this weekend, a SRM-1 and a SRM-1 mk2 professional, with the first one I notice a humm
in the left earspeaker (with any source connected and not dependent from the volume). When I connect a source the hum is difficult to ear but it's still there. Somebody have the schematic of this amplifier?

For the second one mk2 I didn't notice any humm but if I increase the volume at maximum, I notice a humm (without any source connected) is it normal for this amps? otherwise both sound great with my srd5

Thanks

 

[Tinkerer]

Did you rebalance and reset the offset on the amps after fixing them up?

First one sounds like a ground loop though. I'd try connecting a wire between the ground lug and the source chassis and see if that doesn't solve it.

 

[bmichels]

it is incredible that after having OFFICIALLY shown the SRM212 prototype a year AGO, at there is no more news about it

 
Has the project been abandoned ?  it was quite promising....
 

 

[arnaud]

Maybe because it was never approved by Stax themselves? ...

 

[bmichels]

  Maybe because it was never approved by Stax themselves? ...

 
It was displayed on STAX's  booth at CES 2016 !  So... it was an OFFICIAL Stax prototype.

 

[Francisk]

   
It was displayed on STAX's  booth at CES 2016 !  So... it was an OFFICIAL Stax prototype.

I've been waiting for the SRM212 DAC/AMP for some time now and it's no where in sight at Stax website. I'm sure a product that takes so long to release must be fine tuned to almost perfection....Oh well, let's see if it is 

 

[arnaud]

It was displayed on STAX's  booth at CES 2016 !  So... it was an OFFICIAL Stax prototype.

Not quite, it was an edifier booth with what seems like a loose canon ( stax us distributor ). But maybe you know better...

 

[vapman]

Not quite, it was an edifier booth with what seems like a loose canon ( stax us distributor ). But maybe you know better...

Edifier as in the company who makes earbuds is related to stax?

 

[ToroFiestaSol]

Edifier OWNS Stax.

 

[Jones Bob]

The Chinese company Edifier owns STAX.

I've recently had business dealings with David Ip in the video and he is a real stand-up guy. I believe he is working to straighten out the known STAX distribution issues in North America. I look forward to his efforts here.

 

[astrostar59]

The Chinese company Edifier owns STAX.

I've recently had business dealings with David Ip in the video and he is a real stand-up guy. I believe he is working to straighten out the known STAX distribution issues in North America. I look forward to his efforts here.

Hope that is true.I heard on here of issues with warranty claims in the states.

 

[Pokemonn]

regarding warranty issue, i am now repairng my SR-009 right swivel screw which bit loosen.
My warranty priod expired 2 month ago. but!
I got stax telephone few hour ago. Stax service division guy said they repair my SR-009 at FREE! how very kind company stax is....! 

 

[forestitalia]

  regarding warranty issue, i am now repairng my SR-009 right swivel screw which bit loosen.
My warranty priod expired 2 month ago. but!
I got stax telephone few hour ago. Stax service division guy said they repair my SR-009 at FREE! how very kind company stax is....! 

Kind...if you live in Japan.

 

[MacedonianHero]

  Kind...if you live in Japan.

 
Good point. Stax USA has certainly left a lot more to be desired in terms of customer service. Thankfully the Canadian distributer is really good to deal with from what I hear.

 

[Pokemonn]

then come to japan. no immigration ban here