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Go Back   Head-Fi: Covering Headphones, Earphones and Portable Audio > Equipment Forums > Headphone Amps (full-size)

Headphone Amps (full-size) Discussion of desktop headphone amps.

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Old 03-24-2008, 01:28 AM   #151 (permalink)
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Originally Posted by All Day Breakfast View Post
LSD [low self discharge] NiMH tech has dramatically improve the performance, longevity, durability, and cycle life too. However, it is new and relatively unproven tech. For general use, the Sanyo Eneloops LSD NiMH seem the very best and there seems to be no reason to buy any non-LSD NiMH cells these days

and
regular NiMH AA rechargeable batteries giving 10 shots in a digital camera, regular AA alkaline batteries gave 90 buy Sanyo eneloops gave over 400 shots on a charge!
Of course, there was a time when one could get LSD in a sugarcube. So I don't know how I can pass up the opportunity to go trippin' with LSD in my iQube!

Eneloops ordered. Thanks, Eric & Steve for all the great info!
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Old 03-24-2008, 10:10 AM   #152 (permalink)
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i'm still interested in hearing from anyone using iQube with ER-4S. i'd be looking to use either iQube (getting a purchases broker now) or Xin SuperMakro IV (sigh, long waiting list) in my portable system. Any comments on iQube vs Xin's products would be very helpful too.
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Old 03-24-2008, 11:10 AM   #153 (permalink)
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Originally Posted by All Day Breakfast View Post
Regular NiMH AA rechargeable batteries giving 10 shots in a digital camera, regular AA alkaline batteries gave 90 buy Sanyo eneloops gave over 400 shots on a charge!
How much mAh did those "regular" NiMH AA batteries have?
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Old 03-24-2008, 11:48 AM   #154 (permalink)
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Originally Posted by Contrastique View Post
How much mAh did those "regular" NiMH AA batteries have?
I've done a bit of the research for you... Eneloop have a similar claim on this page and a place to ask further questions.

The original info I posted came from this site which seems to be people dealing with survival issues in extreme conditions.
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Old 03-24-2008, 12:08 PM   #155 (permalink)
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Originally Posted by All Day Breakfast View Post
I've done a bit of the research for you... Eneloop have a similar claim on this page and a place to ask further questions.

The original info I posted came from this site which seems to be people dealing with survival issues in extreme conditions.
Thanx for the info. The Eneloop specs are used in some other brands as well, for example Ansmann. It's a good system.

Too bad the article doesn't mention the mAh as that makes the comparism useless. If you put 900 mAh in a digital camera it surely won't even last 10 photos long. When talking like 2000 mAh the results will be very different though they won't last a 400 pics, which I do find hard to believe when using Eneloops.
Also what camera did they use for the testing as different brands drain the batteries differently?
But anyways, thanx for your reply!
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Old 03-24-2008, 12:55 PM   #156 (permalink)
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Originally Posted by Contrastique View Post
snip...won't last a 400 pics, which I do find hard to believe when using Eneloops.
Also what camera did they use for the testing as different brands drain the batteries differently?
But anyways, thanx for your reply!
and the characteristics of the charging unit, the ambient temperature, the time since charge... Battery testers at the candlepower forum seemed to have a difficult time comparing batteries because of the myriad of variables involved.

Everything that I read in my 1 hour excursion into the world of batteries supported two points which I can't independently verify; that LSD (I know, I know, I'm also a child of the 60's, in fact from the mid-Hudson Valley NY if that means anything to anybody ) LSD NiMH batteries are the hot topic among NiMH affectionados and also that Eneloops were mentioned regularly as the best of the current crop of LSD NiMH.

Last edited by All Day Breakfast; 03-24-2008 at 07:55 PM..
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Old 03-24-2008, 05:26 PM   #157 (permalink)
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Originally Posted by Dexdexter View Post
Eric, despite Hans' reservations, I have accepted your challenge and made my very first YouTube video! (Apologies in advance for the crappy picture quality and stumbling narration...)

iQube Opening Video Tutorial

Click HERE.

6moons iQube Review

The review was conducted by Marja Vanderloo & Henk "LongBeard" Boot. It provides some fascinating insight into the origins and development of the iQube, with particular attention paid to its Class D topology.

Click HERE.

Congrats, Hans!
Great video! Makes it a heck of a lot easier to conceptualize opening when you can see it in action.
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Old 03-24-2008, 06:40 PM   #158 (permalink)
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Any comparisms of the iQube and the amp sections of the Pico and the Predator?
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Old 03-24-2008, 07:37 PM   #159 (permalink)
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I compared them in my portable amp review.
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Old 03-26-2008, 02:54 AM   #160 (permalink)
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Originally Posted by jpelg
Can the amp be used with just an AC adapter, sans batteries, as a home amp?
Originally Posted by Dexdexter View Post
James, the iQube may of course be used as a home amp, but batteries absolutely need to be in place for it to function.
Since most rechargeables shouldn't be continuously plugged into a power source, it seems like I'll have to switch the charger in & out as needed.
Originally Posted by jpelg
2. Has anyone determined which of the Radio Shack PS adapter tips work with the iQube?
Originally Posted by jeremyrose77 View Post
the pdf that the outer pin is 2.35mm and inner is 0.7mm
Rat Shack seems to have a 2.3mm or 2.5mm adapters. No 2.35mm . Since Hans doesn't recommend the 2.5mm, should I try the 2.3mm? I'm just wondering if that difference will be a problem making sufficient connection to charge the batteries.
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