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icooper
1
Aug 28, 2015
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1. Do you have a volume limiting feature for those of us using IEMs? I actually like a control I know the operating system has no real control over to help with that, and I know that some OS volume controls end up killing dynamic range. (SE846s are the IEMs to be driven... so volume is a real concern.)
2. Associated with 1. How good IS the hiss? :) No really... I can hear the hiss off a E07K and it is a bit irritating.
3. On the other hand, I'd to use this amp with my HD-600s if possible. (About 10-15 years old now... There was no 650 yet ;). )
4. Have you really tested on Linux, or are you guessing off the USB compatibility? This is important to me because I use Linux every day, as my main platform.
(edit to clarify on Linux)
Aug 28, 2015
asymcon
30
Aug 28, 2015
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icooper1. There are two gain settings, high being 20dB boost over low. 2. This unit has rotary digital volume control, so I'd imagine there'll be hiss only on high volumes at high gain settings in super sensitive IEMs. 3. HD600 are rated 300Ohms and 97dB/mW. With Slim you'll be able to reach 111.48dB peak volume at 28mW, with HD 114.48dB at 56mW. That's really loud - no need for additional amp. I happen to own AKG K240 DF, rated 600Ohms at 88dB/mW, not really sensitive cans, but over the years, they are the only ones still on a pedestal, unbeaten by any other, at least for me. :) 4. The device is class-compliant, the need for driver on Windows is to compensate for kernel incompatibility with USB Audio Class 2 devices, which Microsoft hasn't implemented yet (it's about 10 years now). Linux and Mac OSX does support USB Audio 2, which is necessary to achieve 192kHz and 24bit. USB 1.1 Full Speed caps at 96/24 for 2 channels
Hopefully that answers your questions. :) Maybe CEntrance can answer you in even more depth.
Aug 28, 2015
icooper
1
Aug 29, 2015
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asymconI asked here to get the CEntrance's reply to my questions.
#1. Non-answer, to the hearing protection issue, either setting can likely blow my ears out with the SE846s. (I like hardware protection here where I can get it.)
#2. Good guess, I'd like to hear the answer of the guy with his hands on the hardware.
#3. I don't listen anywhere near that loud. Not close. Should be fine, one would hope.
#4. That's great in theory. It is good to actually have someone plug it into a machine and confirm it works. As someone said to me one "Theory and practice are the same... In theory." Given that my main laptop is Linux, I have little interest in hardware that won't work with it.
Aug 29, 2015
asymcon
30
Aug 29, 2015
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icooperIf you're so selective, then you should've contacted their support directly instead of asking here, or at least specify in your post that you want exclusive reply from CEntrance. #1 Non-question - Feel free to blow up your SE846s, any decent amp with near-zero output impedance can do it for you. It's up to the user to insert their headphones with volume all the way down, which is how it should be done. Also by adding say, 30R 1% metal resistor on L/R output, there'd be more headroom to adjust volume. #3 That's peak value you could achieve, no-one said to listen at such volumes. #4 Never heard of Linux laptop before, I assumed Linux is OS, not a laptop.
It doesn't hurt to be a bit grateful to someone who wants to help.
Aug 29, 2015
CEntrance
1151
Michael Goodman
Aug 29, 2015
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asymconThe low gain setting is designed specifically for IEMs like SE846 and others, to offer a comfortable volume adjustment range and pitch black noise floor. You should always insert your headphones with volume brought all the way down to prevent uncomfortably loud sounds from reaching your ears. Using the high gain setting wih IEMs is not recommended, it will be too loud for most people.
Aug 29, 2015
icooper
1
Aug 30, 2015
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asymcon@asymcon
Actually, other users may care about the answers. I know that things like Linux compatibility etc, are always interesting.
#1. No, you ignored the point. I asked if they have a way to LIMIT the volume, in hardware/software. I use an iPhone and a Fiio E07K, both of which have "Maximum Volume" settings of one form or another, to prevent you from blowing your ears off, or damaging your equipment. #3. Ok. #4. Actually, it isn't uncommon to refer to a laptop running Linux that way. (shrug) If you want to be really pedantic, Linux is a kernel, not an OS. The distributions turn it into an OS. But well, that's pedantic even for me.
I understand you were trying to be useful, and I appreciate that.
Thanks,
Aug 30, 2015
CEntrance
1151
Michael Goodman
Aug 30, 2015
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icooperVolume limiting is built-in to some consumer electronics pieces to protect the ears of inexperienced users. Often times it's poorly implemented (from the audio fidelity standpoint) and acts as compression. This means that your audio signal gets significantly distorted as it approaches the limiting point. We designed DACport Slim such that it never limits or clips the output signal and therefore does not distort the audio. It's a premium sounding product, even though the low price leads some people to think that it may offer only an average level audio quality. It's truly an audiophile-level piece. As with most products of this type, the user is expected to adjust the volume and gain setting to make sure they don't create a dangerously high sound pressure level.
Regarding Linux, it will work if your computer/OS has UAC2 drivers.
Aug 30, 2015
kentroger1
0
Aug 30, 2015
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CEntranceDoes this mean no support for UAC1 drivers like plain ol' Windows?
Aug 30, 2015
CEntrance
1151
Michael Goodman
Aug 31, 2015
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kentroger1That's what you get in exchange for 192kHz. Two USB jacks are simply not feasible in this size and price point.
Aug 31, 2015
TraverS
2
Aug 31, 2015
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CEntranceI've asked you 3 times, 2 times on email, for refund and they are all ignored. So you won't do it? I just need some answer.
Aug 31, 2015
CEntrance
1151
Michael Goodman
Aug 31, 2015
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TraverSMonday. We are not open over the weekend.
Aug 31, 2015
asymcon
30
Sep 1, 2015
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CEntranceWhat about adopting USB HS/FS switch? That could be feasible solution in future builds, while not sacrificing design.
Sep 1, 2015
CEntrance
1151
Michael Goodman
Sep 1, 2015
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asymconNot at this price
Sep 1, 2015
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