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New JH Audio flagship! "Siren Series Roxanne" - Page 161

post #2401 of 6927
I have the HDP R10 and the AK 120. They sound pretty much the same to me giving the edge to HDP though . As for low imp IEM,S. I have the jh16 FP .

They most defiantly do not like output imp on Amos. But they do seem fine with the AK120. I do not have the Roxanne as yet to test.

Al
post #2402 of 6927

Jerry was demo'ing them on AK120s in Tokyo. Being multi-BA they'll definitely want a low-output impedance amp.

 

It might be an idea to mention what the dials were set on when posting impressions. Possibly with them turned up, very brightly recorded music might be a bit irritating. I have to send the pair I borrowed off tomorrow to another member to try but I'll try and find some music that doesn't work on them.

 

I managed to do a video about them. It's longer than and not as well-prepared as I had hoped, but I hope you enjoy it all the same.

 

post #2403 of 6927

were about to part with the idea of owning these.. But now after this video... 

post #2404 of 6927
Quote:
Originally Posted by delancyst View Post

Ah cool, so generally speaking (given a same set of iem/hp)

paired with Low impedance dap/amp = warm 
paired with High impedance dap/amp = bright

So how does this relate to hard-to-drive, hi-impedance headphones? Does it also contribute to a different sound signature or just affect the volume output only?

Think of impedance as if it is the diameter of a garden hose or pipe. You want upstream equipment to have a smaller diameter (impedance) than downstream equipment.

Out of a low impedance amp, the JH16s sound accurate and fully extended at both frequency extremes. They won't sound warm or euphonic per se. They will just sound as clean as they are capable of sounding out of the amp. Out of a high impedance amp, they will tend to sound distorted at both frequency extremes, but particularly at low frequencies. Depending on the amp, they can actually sound warmer from a high impedance than a low impedance amp, but this is due to distortion and to the voicing of the amp. To wit, the best I have heard the JH16s was out of my Singlepower Extreme, an OTL amp with a very high output impedance. They just sounded euphonic to me in a way I liked. However, they don't sound nearly as good out of the Apex Teton, another OTL amp, because the distortion is very noticeable. Finally, they sound very good but very accurate out of my ECP Audio L-2, which has a very low output impedance. Overall, go with a low impedance amp. But "warmth" will really depend more on how the amp was voiced than on its output impedance. I would probably go with a Headamp Pico if I wanted something portable.

High impedance headphones can sound great out of low or high impedance amps. In general, for accuracy and extension, the amp should have a lower output impedance than the input impedance of the headphones. The same applies to speaker setups. The rule of thumb, for example, is that the input impedance of a power amp should be at least 10 times higher than the output impedance of the preamp. Volume depends a lot on the amp's gain. With JH Audio IEMs, you want an amp with low gain so you have plenty of room on the volume pot to turn the volume up or down. If the gain is too high, tiny adjustments to the pot will cause major changes in the volume you hear from the IEM.
Edited by minimus - 1/5/14 at 7:20am
post #2405 of 6927
Great post.
When I first took home my wa22. It sounded great with All the headphones I had
At the time. But with the jh16 no good. Those IEM s are a real pain
Others I own are not so picky. Go figure. Anyway good detailed post
post #2406 of 6927
Quote:
Originally Posted by Currawong View Post
 

Jerry was demo'ing them on AK120s in Tokyo. Being multi-BA they'll definitely want a low-output impedance amp.

 

It might be an idea to mention what the dials were set on when posting impressions. Possibly with them turned up, very brightly recorded music might be a bit irritating. I have to send the pair I borrowed off tomorrow to another member to try but I'll try and find some music that doesn't work on them.

 

I managed to do a video about them. It's longer than and not as well-prepared as I had hoped, but I hope you enjoy it all the same.

 

 

Very nice!  Can't wait to receive my pair of Roxanne.

post #2407 of 6927
Quote:
Originally Posted by Mython View Post
 

But, in some cases, poorly-controlled treble can actually be a result of too high an output impedance from the DAP/Amp, can it not?

 

I wonder if that is what happens with my AK120 and Roxanne.  It works great, but like I mentioned somewhere here ... The tremble for me is too harsh with that combination (AK120 & Roxanne).  I usually have to use the USER EQ on AK120 to reduce the overly harsh notes (and make it more pleasant).  I use -3 on the 4K band and that seems to help ... But it does not sound even to close to be as good as with Option B:

 

Option B:

I use a tube amp in between the two and produces an amazing sound ... 

 

PS.: This impression is with the Bass all the way down (default position).  If I turn it all the way up, the tremble seems less harsh/bright ... 


Edited by perdigao - 1/5/14 at 11:43am
post #2408 of 6927
Quote:
Originally Posted by Currawong View Post
 

Jerry was demo'ing them on AK120s in Tokyo. Being multi-BA they'll definitely want a low-output impedance amp.

 

It might be an idea to mention what the dials were set on when posting impressions. Possibly with them turned up, very brightly recorded music might be a bit irritating. I have to send the pair I borrowed off tomorrow to another member to try but I'll try and find some music that doesn't work on them.

 

I managed to do a video about them. It's longer than and not as well-prepared as I had hoped, but I hope you enjoy it all the same.

 

Wow... Clear is just beautiful... ah well... my Carbon Fiber's will do the thing:)!

post #2409 of 6927
Quote:
Originally Posted by Currawong View Post
 

Jerry was demo'ing them on AK120s in Tokyo. Being multi-BA they'll definitely want a low-output impedance amp.

 

It might be an idea to mention what the dials were set on when posting impressions. Possibly with them turned up, very brightly recorded music might be a bit irritating. I have to send the pair I borrowed off tomorrow to another member to try but I'll try and find some music that doesn't work on them.

 

I managed to do a video about them. It's longer than and not as well-prepared as I had hoped, but I hope you enjoy it all the same.

 

thanks Currawong!!  Great review. can't wait for next one.

post #2410 of 6927

Question about the bass screws - how loose are they?  Can they be moved by something brushing against them?  

post #2411 of 6927
Quote:
Originally Posted by bobeau View Post
 

Question about the bass screws - how loose are they?  Can they be moved by something brushing against them?  


Not that I have seen so far. I tried just using my finger nail or just pressure from my finger tip and could not move them easily.

post #2412 of 6927
Im actually pretty intrigued by those tips mentioned in the video. Any way to het a name on that or where to get it?
post #2413 of 6927

total noob here; I ordered my Roxanne CIEM's today after lurking here for a couple of months. Thanks to all for sharing your knowledge and impressions.

post #2414 of 6927

another week is starting and hope get some good news about Roxanne this week.

 

:wink:

post #2415 of 6927

Any solid rumors whatsoever concerning when we can expect retail shops to receive the universal version?

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