I am just about to buy this amp. I am planning to use it with T1, DT880... Is this good choice? Connected to DacMagic (modified). Its not so cheap so i need to be sure.

^ you should read this thread: http://www.head-fi.org/forum/thread/471583/review-meier-audio-concerto-headphone-amp

Yipieee,just ordered the concerto after weeks of studying reviews.Will give a review when I get it.

I received my StageDAC yesterday and initial impressions are very good indeed.
 
In a few weeks I will add a review.
 
My StageDAC arrived very fast so I hope your Concerto comes soon.
 
I think the StageDAC looks better in the flesh than in the pics. Actually I'm really rather glad it is a simple design as these days I just want things to be visually simple, I don't want some big visual statement.

Just been looking on E-bay at all the Chinese tube amps,and noticed they are all 110volts for America,so I checked the Meier site again and the concerto has a 110-220 volt switch,but in Canada its 120volts.So will I need a transformer for this .If so who does a 120 to 110volt as they all are 110-220 when I checked.Thanks.

Nope don't think you'll need a transformer. Just toggle the switch to 110V and you'll be fine.
 
Quote:

stef50millbay said:

Just been looking on E-bay at all the Chinese tube amps,and noticed they are all 110volts for America,so I checked the Meier site again and the concerto has a 110-220 volt switch,but in Canada its 120volts.So will I need a transformer for this .If so who does a 120 to 110volt as they all are 110-220 when I checked.Thanks.

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Fellow Concerto owners,
 
I've noticed that when I turn my Concerto on there's a reverberating noise and hum coming from the area around the power switch. It's very very faint, and I can only hear it at night when there's no external noise to drown it out.
 
When I press on the chassis over the power switch, the hum stops until I let go. It almost seems as though the sound is caused by something vibrating.
 
Is this within the normal functioning of the amp? I might just be overreacting, but I wanted to make sure since this is my current favorite SS amp. The hum isn't loud enough by a long shot to interfere with music listening.

That sounds like the transformer.  Do you have any lighting dimmers on nearby?  If so, try turning them all the way off.  I don't have this issue with the Concerto, but I do with several other components.  And that with my hi-fi even being on a separate AC circuit.

I noticed that also in the beginning when I got the Concerto and it has been discussed in here before. Several other people have noticed that humming too. The noise is highest right after you switch it on. I have either grown accustomed to it or it has gone since I never notice it anymore. I do not think that your Concerto has a fault. At least the humming is not coloring the sound in the headphones as far as I can tell.  
 
Quote:

muppetface said:

Fellow Concerto owners,
 
I've noticed that when I turn my Concerto on there's a reverberating noise and hum coming from the area around the power switch. It's very very faint, and I can only hear it at night when there's no external noise to drown it out.
 

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I received my "Concerto" yesterday. It's indeed an excellent amp. The only thing which spoiled the party a bit: I made exactly the same observations as MuppetFace. I wrote Jan Meier a mail and received the following answer (translating from german): The humming is caused by the huge transformer which is very close to the cover and therefore the remaining magnetic signal causes the cover to vibrate.
Best thing to get rid of this: attach a small rubber feat at the inside of the cover above the transformer. I did this, it works perfectly. The rubber feat pushes the cover up and away from the transformer and provides a tension to the cover, so it doesn't vibrate anymore. The rubber feat I use, has a height of about 4mm.

Thanks for the suggestion. I'll try that out on my amp as soon as I get the chance.

I ended up just using a small blob of blu tak as I couldn't find the small rubber feet I coulda sworn I had. 

I wasn't sure where else to post this so I'm putting it here. I've had my Concerto for about a month and have been enjoying it immensely. The last few days it has started to behave a bit odd with the volume control seeming much louder than before. Today I noticed the volume remained loud even when turning the knob all the way down and the first two gain indicator lights remained on even as well. After a few minutes (not touching the amp) I heard a click and the volume dropped significantly. I turned it up a bit to a comfortable level, started listening to a few tracks and then out of the blue it spiked back up to deafening levels. I also heard periodic pops or skip like errors that I know are not present in the track I was listening to.
 
The Gain switch was up, crossfeed down. Adjusting the crossfeed had no impact. Switching the gain down decreased the volume but also exhibited some odd behavior. The first red light on the gain indicator remained off regardless of adjustment. Adjusting it up just before 12 o’clock it began to get louder but after 12 o’clock the 4^th gain indicator light up and volume decreased significantly, the light between the gain switch and volume also went off. Finally, I noticed that when switching the amp off when the gain switch is down the volume will spike just before it powers down.
 
I’ve emailed Jan about this but thought I’d post here to get some feedback on what the issue could possibly be and if anyone else has experienced it? I’ve been using the LCD-2 just fed by and iPod in a Denon doc. Not that it sounds source related but it acted the same when using the uDac or Vdac.

did Jan sort it out for you?

I would like to know too.