Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps › New Leckerton UHA-6S MKII Portable Headphone Amplifier Announced (Update User Impressions Added July 20th 2012)
New Posts  All Forums:Forum Nav:

New Leckerton UHA-6S MKII Portable Headphone Amplifier Announced (Update User Impressions Added... - Page 102

post #1516 of 2186

Well crud. So there's the idea about lining the amp with shielding material, any other thoughts on how to improve this? 

post #1517 of 2186

when is someone going to come out with a small headphone amp that plugs directly into an ipod touch/iphone with a serious op amp OP276 and a serious DAC sabre?  Not talking about those ridiculously fat and heavy big host mode fostex type amps but something small like the UHA-4/6?

 

please someone message me when there is a realistic portable option for ipods/iphones. 

post #1518 of 2186
There's already several amps out there like the Leckerton which work with iPhones and iPods, though they're usually a little more expensive. If you want something integrated with a case and whatnot you should check the Verza, if you can get past the sticker shock.
post #1519 of 2186

Hmm... OPA627 is doing a lot better with cell phone interference than OPA209 to me. I can occasionally hear some tinny noises when my phone is completely out of reception (no bar), but it's not intrusive at all for the most part.

 

OPA209, on the other hand, would start buzzing when in close proximity with the phone (being on the same table was enough, it seems), and as the phone's signal got worse, the interference got a lot worse... to the point where I heard audible pops and clicks that forced me to turn the amp off until I got to a place with better reception.

 

Maybe that's why Leckerton Audio is defaulting back to AD8610?

post #1520 of 2186
I think he actually stated as much somewhere on the site... It's cool you found an op amp that solved your issue, did you find it altered the sound in any significant way? Phone's wireless interface always works harder when you've got a low signal, in several way, transmit power will go up and the phone will actively scan for other towers more frequently (that's why wifi consumes less battery, point A to B connection and no extra scanning).
post #1521 of 2186
Quote:
Originally Posted by Bill-P View Post

Hmm... OPA627 is doing a lot beotter with cell phone interference than OPA209 to me. I can occasionally hear some tinny noises when my phone is completely out of reception (no bar), but it's not intrusive at all for the most part.

 

OPA209, on the other hand, would start buzzing when in close proximity with the phone (being on the same table was enough, it seems), and as the phone's signal got worse, the interference got a lot worse... 

 

Fun fact: The weaker the cell network is, the harder your phone works -- it's increasing the power of its transmitters to seek and maintain connection. This is why your amp's interference gets worse when your phone is showing no signal.

 

The most efficient way to burn down your phone's battery is to keep the phone on and put it in a shielded case. It's going to run at full power on cell, bluetooth, and wi-fi transmitters because it doesn't know that there's nothing to connect to; it's going to run on the assumption that it's not trying hard enough.

post #1522 of 2186
Quote:
Originally Posted by Bill-P View Post

Hmm... OPA627 is doing a lot better with cell phone interference than OPA209 to me. I can occasionally hear some tinny noises when my phone is completely out of reception (no bar), but it's not intrusive at all for the most part.

 

OPA209, on the other hand, would start buzzing when in close proximity with the phone (being on the same table was enough, it seems), and as the phone's signal got worse, the interference got a lot worse... to the point where I heard audible pops and clicks that forced me to turn the amp off until I got to a place with better reception.

 

Maybe that's why Leckerton Audio is defaulting back to AD8610?

Well, assume that there's no phone or any other device around except for a laptop.

Which one would You choose: OPA627, OPA209 or AD8610, or ...?

post #1523 of 2186

Depends on what I'm plugging into it.

 

One of my IEMs sounds fantastic on the 627 and kind of generic on the 8610. Another one sounds great on the 8610 and uninteresting on the 627.

 

There's no single best opamp; you have to figure out what works best for what equipment you're using.

post #1524 of 2186
Quote:
Originally Posted by ardgedee View Post

Depends on what I'm plugging into it.

 

One of my IEMs sounds fantastic on the 627 and kind of generic on the 8610. Another one sounds great on the 8610 and uninteresting on the 627.

 

There's no single best opamp; you have to figure out what works best for what equipment you're using.

Thanx  a lot. So, we're talking about the synergy between the UHA-6S MKII and the headphones.

post #1525 of 2186

I have seen these amps and they are what i am talking about not having.  Too bulky and expensive and still not with very good top of class components.

post #1526 of 2186
Thread Starter 
Quote:
Originally Posted by groovyd View Post

I have seen these amps and they are what i am talking about not having.  Too bulky and expensive and still not with very good top of class components.


Well in that case don't buy it and be happy with that decision.


An now back to talking about one heck of a great sounding amp

post #1527 of 2186

Ironic detail to the search for iPhone compatibility: the Leckerton is often criticized for choosing a simpler USB receiver to maintain wider compatibility (e.g. with the iPad)... which I don't consider a problem, but a welcome feature. One can always use optical in if so inclined... but many would obviously prefer a higher resolution USB input instead of wider compatibility.

post #1528 of 2186
Change of topic.

I sent mine back and Nick repaired it within a few days & sent it back to me within one week!

This is a great amp for it's price. And the customer support/service is also top notch!!
post #1529 of 2186
Quote:
Originally Posted by plakat View Post

Ironic detail to the search for iPhone compatibility: the Leckerton is often criticized for choosing a simpler USB receiver to maintain wider compatibility (e.g. with the iPad)... which I don't consider a problem, but a welcome feature. One can always use optical in if so inclined... but many would obviously prefer a higher resolution USB input instead of wider compatibility.

Now I understand everything. Thanx.

 

I've read  on this site that the UHA-6S MKII performs better via optical input to its DAC section.

Unfortunatley, my (modern) Toshiba Satellite  does not have an optical output.

post #1530 of 2186
Quote:
Originally Posted by JakeJack_2008 View Post

Now I understand everything. Thanx.

 

I've read  on this site that the UHA-6S MKII performs better via optical input to its DAC section.

Unfortunatley, my (modern) Toshiba Satellite  does not have an optical output.


I would be tempted to try Bill P's solution. At minimal cost you can convert your USB output to optical and use the optical input on the Leckerton. Look back at his posts and you'll find it. I haven't heard it myself, but in your position and for the price I would certainly try it out.

New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Portable Headphone Amps
Head-Fi.org › Forums › Equipment Forums › Portable Headphone Amps › New Leckerton UHA-6S MKII Portable Headphone Amplifier Announced (Update User Impressions Added July 20th 2012)