tranhieu said:

 

castleofargh said:

TBH I dismissed increasing impedance because if it would mean slower and uncontrolled bass

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Sorry I don't get this. Even Rin confirmed that adding a 33ohm resistor will tame the bass by a fair amount (and you already checked his blog?).
 

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 the impedance of the 334 is lower in the bass region (compared to medium), so increasing the source impedance will simply mean less volts on the bass. and so indeed less db in those frequencies.
 I was talking about getting a bad damping ratio. using more than 30ohm on the 16ohm bass region of the 334 isn't an ideal scenario of tight controlled bass. (without regard to frequency response changes)
 
but as I said in my silly trial with the hifimedy, all in all it seems like it doesn't change too much the behavior of the bass driver.
doing the same on my IE80 (dynamic driver) doesn't alter the signature at all, but the bass get bloated past the ugly point.
 
 
 

evetan said:

  What specific impedance adapters do you guys recommend? That are decent in build quality.

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Rin suggested 33ohm. in any case more would start killing the treble too much IMO.
 
 
 
 
do you guys know where we can find more values for impedance adapters? I would like to have some like 2, 3, 5ohm when I try some daps so I could compare 2 daps with around the same impedance and be sure I'm not blaming a colored sound on the dap when it's just the IEM getting altered by impedance changes.

castleofargh said:

  do you guys know where we can find more values for impedance adapters?

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You can try here. It says they can make it to your specs:
 
http://www.ebay.com/itm/IMPEDANCE-RESISTANCE-ADAPTOR-3-5MM-TO-6-35MM-PLUG-/300453295797?pt=US_MP3_Player_Cables_Adapters&hash=item45f46976b5

thank you mate I remember getting from him the 2 little er4 adapters to plug usual IEM cables on them. but for some reason (language choice in Firefox) his products were not listed for me.
 
I asked him and I'll report the answer if someone else is interested.

castleofargh said:

   the impedance of the 334 is lower in the bass region (compared to medium), so increasing the source impedance will simply mean less volts on the bass. and so indeed less db in those frequencies.
 I was talking about getting a bad damping ratio. using more than 30ohm on the 16ohm bass region of the 334 isn't an ideal scenario of tight controlled bass. (without regard to frequency response changes)
 
but as I said in my silly trial with the hifimedy, all in all it seems like it doesn't change too much the behavior of the bass driver.
doing the same on my IE80 (dynamic driver) doesn't alter the signature at all, but the bass get bloated past the ugly point.
 
 
 
Rin suggested 33ohm. in any case more would start killing the treble too much IMO.
 
 
 
 
do you guys know where we can find more values for impedance adapters? I would like to have some like 2, 3, 5ohm when I try some daps so I could compare 2 daps with around the same impedance and be sure I'm not blaming a colored sound on the dap when it's just the IEM getting altered by impedance changes.

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Oh got it. Well you overlooked the fact that when increasing source impedance you are reducing the damping across the whole frequency range, not just the bass region. There'll be less dB on the bass presumably (theoretically, not exactly the case when it comes to different IEMs), but the rest of the spectrum is also skewed at the same  time.
I guess there's some slight misunderstanding here. By increasing load impedance by 30 ohm on a 16 ohm load, you are also increasing damping by 3 folds so it translates into better controlled bass (and mids and highs as well). How that comes about was explained in my previous posts. That's why you see a much tamed curve in the bass region in the graph I posted earlier due to the fact the rod inside the BA doesn't swing all the way as much compared to when it's less dampened.
Can't speak for the IE8. BAs are way more sensitive to voltage changes compared to dynamic drivers. Not to mention there are heaps of types of dynamic drivers out there.
 
Oh well better stop  here. The mod sure won't like it if I turn this thread into another science one. 
Btw if you want to get a good, cheap adaptor that comes with  whatever value you want to play around with, it might be a good idea to drop by the DIY box. There's a massive thread there where folks post their cabling work (which is very well done) and there'll surely be someone near your area. Drop him a pm about what you want and see how it goes. 

I've put up my 334s if anyone is looking for a pair: http://www.head-fi.org/t/686781/fitear-to-go-334

burtomr said:

 

castleofargh said:

  do you guys know where we can find more values for impedance adapters?

Click to expand...

 
You can try here. It says they can make it to your specs:
 
http://www.ebay.com/itm/IMPEDANCE-RESISTANCE-ADAPTOR-3-5MM-TO-6-35MM-PLUG-/300453295797?pt=US_MP3_Player_Cables_Adapters&hash=item45f46976b5

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good news everyone!
got this reply from awwan:
"Hi, thank you for your interest in our product.
Yes, I can made less than 15 ohm resistance adaptor, please let me know how many ohm resistance you need?"
 
I know someone who's gonna play "impedance doctor" pretty soon. ^_^

castleofargh said:

 
TBH I dismissed increasing impedance because if it would mean slower and uncontrolled bass. even if that's not a dynamic driver I'm not a fan of this idea. that said I didn't try. 
there are also adapters to decrease impedance. I don't know how they really work but I guess they must use the R*R/(R+R)= R/2 idea, with the same resistors in parallel.(but then dividing current for an IEM doesn't seem like the greatest idea).

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Adding impedance has a varying effect on different IEMs. In some instances you may find it beneficial although generally (in my experience) I've found it to degrade the sound quality. Taking vocals farther back, and increasing treble presence. Basically dulling the sound in a sense.

Almost 1 year after I sold my fit ear 334 v1 to go , 3 days ago my Fit Ear 334 v2 to go is arrived

The first time I heard was surprised , the sound character is different from 334 v1

Fit Ear 334 v1 is more or less like my LCD 2 v1
Fit Ear 334 v2 is more or less like my Fostex TH 900

The best cable pair With My New Fit Ear 334 v2 is Fit Ear 000 cable

I Will post more impression After Burn In

IMO





Below out the box With :

Source : iPhone 4s mod
Dac / Amp : Centrance HI Fi M8 idevice version With rsa balance Connector
Iem : Fit Ear 334 v2 to Go

rudi0504 said:

Almost 1 year after I sold my fit ear 334 v1 to go , 3 days ago my Fit Ear 334 v2 to go is arrived

The first time I heard was surprised , the sound character is different from 334 v1

Fit Ear 334 v1 is more or less like my LCD 2 v1
Fit Ear 334 v2 is more or less like my Fostex TH 900

The best cable pair With My New Fit Ear 334 v2 is Fit Ear 000 cable

I Will post more impression After Burn In

IMO





Below out the box With :

Source : iPhone 4s mod
Dac / Amp : Centrance HI Fi M8 idevice version With rsa balance Connector
Iem : Fit Ear 334 v2 to Go

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Nice!!!
But FitEar they said should not have any different between v1 and v2...

nivebl said:

Nice!!!
But FitEar they said should not have any different between v1 and v2...

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IMO
Is have heard got different In SQ
V1 more Warm sounding SQ , With plus on mid and bass body

V2 more to slighly brighter sounding SQ , With plus In detail and clarity

V2 With 000 cable can has SQ improvement in mid and bass is tighter and has better bass impact

I would guess its more to do with batch variance. My F111 sounds a hair brighter than a loaned F111 I had at the same time. Both were roughly the same age.

shotgunshane said:

I would guess its more to do with batch variance. My F111 sounds a hair brighter than a loaned F111 I had at the same time. Both were roughly the same age.

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If your at the same time , than could be the batch issue

It is very easy to know about v1 and v2 in Fit Ear 334
v1 : the base plate all glossy finish like the body
V2 : the base plate is black matt finish , is different from the body is glossy

I cannot find TG334 on sale anywhere. The closest thing is the Parterre.
 
Whats the fastest way to purchase this in the US?

z3r0day said:

  I cannot find TG334 on sale anywhere. The closest thing is the Parterre.
 
Whats the fastest way to purchase this in the US?

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Good luck with that...they are apparently out of stock. These two are your best shots...if they have any? 
 
ALO: 
http://www.aloaudio.com/fitear-togo-334
 
PriceJapan, they will send to USA when available:
http://www.pricejapan.com/front/e_good_info.php?code=1120&category=10

Just ordered jh roxanne, 
i will sell my 334 v2 with 000 cable soon : )