h20fidelity said:

I read somehere during my research when BH starts running low on power the LED light will begin to dim. (won't shine as bright) Dont quote me on that though until we can confirm.

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I think you made a typo..... *if

lol all kidding aside, ill check that out in two weeks or so haha.

Have been playing round with the BH and i would like to share my first impressions. First of all i found about this amp by a friend who distributes chinese headphone equipment, i didn't payed attention to that that much, i was more eyed on the iBasso amps. So he's going to china and he said he could get some iBasso amps for me (no shipping cost), and i was excited about it, until i read this thread.
 
I was actually quite interested about this amp when i finished reading this hole thread and i went and got it. Im reaallyy happy i did, it sounds fantastic, through my IE60's wich im using for "go to" rig until i get my HD25's (coming next week). It adds just enough brightness and detail to them that they were slightly lacking. The highs were quite "rough" at first but after couple of hours or so they have been tamed down little bit and they keep improving over time. As for my HD598's they add the little thing it was lacking, POWER! It sounds much more complete with this amp, it has improved these headphones in every aspect and they just seem to sound as they should. Although the sound customization switches are quite bad imo, i prefer to have it as "stock", for me it has the best sound. One thing worth mentioing is when you turn the amp on you'll hear sort of loud "puk" noise and when you turn the amp off you'll hear like a laser gun sound (?), not big things but still worth mentioning.
 
They fit PERFECTLY at the back of my iPod classic 80gb (wich is my DAP of choice atm). Its small, compact, relatively light and big thing for me is that its made from aluminium (or some metallic surface). It feels very sturdy indeed, and this thing just runs on air, HOW ON EARTH they could make this sound so good in such a small form factor and have ridiculously long battery life?
 
Some pictures. 
 
 

 

 

 
As i said i will be upgrading to HD25 I-II's next week or so (custom ones made by customcans, REALLY excited about those). And i'll do a copper LOD and recable those HD25's when they arrive, will post a picture at the portable rigs thread.
 
Im bit of a newcomer in terms of audiophiling but i hope this wasn't complete garbage. I HIGHLY recommend this amp, its fantastic for the price and the battery life is truly exceptional. 

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atilio said:

Thanks for the impressions Shootinputin. Interesting. I'm more and more curious about giving this little amp a try.
 

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You should its a cool little amp. I havent tried this with some harder to drive cans, but for 50-100ohm headphones it does a nice job (been using low gain).

shootinputin187 said:

You should its a cool little amp. I havent tried this with some harder to drive cans, but for 50-100ohm headphones it does a nice job (been using low gain).

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Yeah if I turn on high gain with my 50 ohm cans its a really painful experience

From comments, I am concerned about the brightness of this amp since my headphones are as bright as I would like.  Any thoughts on the impact of this amp related to brightness and compared to more neutral amps?

 I am leaning toward the E12, but haven't pulled out the credit card yet.

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craigster75 said:

From comments, I am concerned about the brightness of this amp since my headphones are as bright as I would like.  Any thoughts on the impact of this amp related to brightness and compared to more neutral amps?

 I am leaning toward the E12, but haven't pulled out the credit card yet.

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It's bright at start BUT its not too bright or anything and it does infact get more neutral when u have done some burn in (my experiences)

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shootinputin187 said:

Quote:

craigster75 said:

From comments, I am concerned about the brightness of this amp since my headphones are as bright as I would like.  Any thoughts on the impact of this amp related to brightness and compared to more neutral amps?

 I am leaning toward the E12, but haven't pulled out the credit card yet.

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It's bright at start BUT its not too bright or anything and it does infact get more neutral when u have done some burn in (my experiences)

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+1
 
I highly recommend it for M-100 owners. The soundstage is HUGE, the mids are a tiny bit more focused (esp. on out1), details are even cleaner (esp. on out 2), and the rolled off treble of the M-100 is counterbalanced by the brightness a little bit, and it does go away after a few hours of use. The LF switch is powerful, makes the M-100s rumble nicely. It's pretty neat too cuz it give some boost to treble and adds some clarity. Honestly can't listen to my M-100s without the BH anymore. They sound congested and boomy. 
 
Craigster, for the sake of it being less neutral than the E12 you might prefer that, but in all honesty I still highly recommend the BH - It's like the M-100 of portable amps, does a lot right, but it's not by any means neutral. It don't quite offer the same as other bass boosts or crossfeeds on amps, so it's a different kind of amp all together. Especially the friggen battery. Still can't get over that battery. 

Actually i have used it with both a 250 and 600ohm beyer and they power them fine, abit lacking in voltage on the 600ohm i must admit. But who is carrying around a portable amp and 600 ohm headphone?

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leonarfd said:

Actually i have used it with both a 250 and 600ohm beyer and they power them fine, abit lacking in voltage on the 600ohm i must admit. But who is carrying around a portable amp and 600 ohm headphone?

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True, i dont think BH has any problems running portable closed cans. (i havent seen 600ohms closed cans yet, correct me if im wrong)

Hey guys I just found out on ebay that there is a "BK" version of this amp. What's the difference between the BH and BK? 

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jmsilva22 said:

Hey guys I just found out on ebay that there is a "BK" version of this amp. What's the difference between the BH and BK? 

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It's been covered before.  The BH is the upgraded version of the BK, although I forget what's exactly changed

I wish someone on here spoke Chinese so they could read the paper that comes with the bh and maybe all these questions will be answered,

I guess it's an ancient Chinese secret lol

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clarkkent said:

It's been covered before.  The BH is the upgraded version of the BK, although I forget what's exactly changed

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Thanks.
 
BH = upgraded = better. That's all the info I need.

Quote:

leonarfd said:

Actually i have used it with both a 250 and 600ohm beyer and they power them fine, abit lacking in voltage on the 600ohm i must admit. But who is carrying around a portable amp and 600 ohm headphone?

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slowly raises hand and looks around. Not only that i was also using a couple of rare 1000 ohm portables at one point...( not joking )
forever alone.
 
I'll check the sensitivity on the beyer there and compare to the stuff i use or would use moreso when I get this thing.
Thanks for the firsthand experience.  How noticably underpowered in your estimation.  ( help me obsess more over the xo2 here.)

Nick, you crack me up lol!

So, you have this bad boy ordered?