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Amps that can drive the HiFiMan HE-6 planar headphones - Page 116

post #1726 of 3098
Quote:
Originally Posted by nigeljames View Post

 

I haven't noticed my NFB-7 leaning to the 'bright side of neutral'. I doubt the Master-7 will be much different as both are described as neutral.

 

I recommend you give your amp time to settle in first. I have heard people say that Krell amps can be 'lively' in the highs especially when new.

Nice to hear your thoughts though.


I guess it's not the DAC then. The Krell was bought used from agon. After a took a shower last night and listen a bit more before bed, I didn't notice anymore fatigue.

 

So it's perfectly safe for class A gear to run at ~50C?

post #1727 of 3098

The warmer they get the better they sound biggrin.gif

post #1728 of 3098
Quote:
Originally Posted by preproman View Post

The warmer they get the better they sound biggrin.gif

 

:thumb: We like this reply.

post #1729 of 3098
Quote:
Originally Posted by ohhgourami View Post


I guess it's not the DAC then. The Krell was bought used from agon. After a took a shower last night and listen a bit more before bed, I didn't notice anymore fatigue.

 

So it's perfectly safe for class A gear to run at ~50C?

 

the KAV 400xi doesn't have much Class A bias.  the dealer where i bought mine from years ago didn't know how much, but considered it Class A/B at least for driving speaker loads.  we're talking about 200W/8ohms with some decent V-swing here, so yes, some heat through the well ventilated chassis is normal.  just make sure you have at least 5" of space above the chassis and you'll be fine.


Edited by fishski13 - 8/16/13 at 6:09pm
post #1730 of 3098
Quote:
Originally Posted by LarsHP View Post

Okay, my Leben CS300 (integrated tube amp with headphone output) landed this afternoon. Allegedly it has either 800mW or 1W from the headphone output - I don't know what mine has. Anyway - I can safely say it DOES NOT drive HE-6 from the headphone output to anything more than quiet to moderate levels - then it starts to distort very clearly. When I put on the Prelude from Carmen by Bizet, it was distorting awfully. This is quite surprising to me, because even from the Balanced amp card in the HM-801 it does better (and possibly also louder).

I have to correct myself a little here: After having the CS300 for a while and testing several other tracks, it seems that the Prelude from Carmen is giving the CS300 some early distortion so to speak - that is - I can listen to other tracks louder without distortion. This is with HE-6 from headphone output. At the same volume dial position I also hear distortion on my speakers. In other words, it might have to do with a too high level at the input stage. (Maybe someone with better tech knowledge can correct me here?)

 

Today I mounted a couple of 10 Ohm power resistors in parallel on the speaker taps and attatched the HE-6 to those. Since the CS300 is 12W, the HE-6 receives up to 2W (and the resistor 10W). This way I have a much higher output available - higher than I need, but maybe not high enough to play distortion-free at profoundly ear damaging levels. In other words I feel I have enough power. However, I now hear a little bit of humming between tracks (and when the music is very low level). This is allegedly fixed by mounting a choke, but I won't do that myself ...

 

Treble is simply gorgeous and bass is tight and punchy. A very relaxed sound with lots of space around instruments.


Edited by LarsHP - 8/17/13 at 11:46am
post #1731 of 3098

how about that precision 1 amp from audio-gd ? has anybody ordered it ?

post #1732 of 3098
Quote:
Originally Posted by magicman View Post

how about that precision 1 amp from audio-gd ? has anybody ordered it ?

 

Just saw that one on their site yesterday, looks like a beast.

post #1733 of 3098

Just wondering if anyone had any opinion on the Yamaha P2201. Its a beast of a power amplifier. I'm looking at this or something like the Pioneer SX-1010. Basically vintage powerful gear. The Yamaha is much more powerful but the SX is more of a well known high end receiver. 

 

Any opinions would be appreciated. 

post #1734 of 3098
Quote:
Originally Posted by magicman View Post

how about that precision 1 amp from audio-gd ? has anybody ordered it ?

 

I don't think anyone has. Wish king-wa wouldn't put out so many units. It's kind of hard to get reviews on a particular one with so many available types. 

post #1735 of 3098

Update:

 

I can confirm that this amp can cause fatigue if you try to listen at levels slightly louder than normal. Just keep it at your normal level and it would be fine.

 

Do you guys have any solution for eliminating the slight background "hiss" from amps? Of the speaker amps I've owned, this one has the lowest amount of hiss, but it would be nice to completely rid of it.

 

And what do you guys do to keep the volume between tracks the same? I use foobar and I've applied replaygain to my entire collection, but I wonder if there are alternatives.

post #1736 of 3098

You get hisss with the HE-6??  That's odd.  I never got any hisss out of all the amps I've tried it on..

post #1737 of 3098
Quote:
Originally Posted by ohhgourami View Post

Update:

 

I can confirm that this amp can cause fatigue if you try to listen at levels slightly louder than normal. Just keep it at your normal level and it would be fine.

 

Do you guys have any solution for eliminating the slight background "hiss" from amps? Of the speaker amps I've owned, this one has the lowest amount of hiss, but it would be nice to completely rid of it.

 

And what do you guys do to keep the volume between tracks the same? I use foobar and I've applied replaygain to my entire collection, but I wonder if there are alternatives.

 

You could get a little resistor adapter for the amplifier. Mal put a 500 ohm pair in front of his emotiva. 

post #1738 of 3098
Quote:
Originally Posted by preproman View Post

You get hisss with the HE-6??  That's odd.  I never got any hisss out of all the amps I've tried it on..


It's very subtle. I didn't realize it did until I hit the mute button in the amp. Is it possible that it has hiss since it could have been owned for 8 years (I bought it used)? Caps going bad?

post #1739 of 3098
Quote:
Originally Posted by ohhgourami View Post


It's very subtle. I didn't realize it did until I hit the mute button in the amp. Is it possible that it has hiss since it could have been owned for 8 years (I bought it used)? Caps going bad?

Nope, if it's cap going bad, you won't have hiss on your hands =p. Usually it's channel cracking, noise and various other stuff.

 

You can try getting a pair of attenuators to see if the hiss goes away. If it does then the amp has too much gain for the He6. Try Single ended input too.

post #1740 of 3098
Quote:
Originally Posted by khaine1711 View Post

Nope, if it's cap going bad, you won't have hiss on your hands =p. Usually it's channel cracking, noise and various other stuff.

 

You can try getting a pair of attenuators to see if the hiss goes away. If it does then the amp has too much gain for the He6. Try Single ended input too.


Well...I do have the volume at 2 or 3 (1 is the lowest to have sound). I'm a pretty quiet listener though. I have no idea how high the volume can go, nor do I want to try.

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