| Portable Source Gear Discussion of portable audio source gear, like iPods, other digital audio players (DAPs), MD players, portable CD players. |
01-19-2008, 09:27 PM
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Junior Head-Fi'er
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Join Date: Dec 2007
Location: Littleton, CO
Posts: 26
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iPod Classic Firmware 1.1 WARNING
iPod Classic Firmware 1.1 WARNING
Hi all
Just updated my iPod classic to the 1.1 firmware, and was experiencing a lot of weird noise in my mini^3 when the power in the iPod was off. Took it down to the workbench and did some investigating.
What I found was ~.5v of DC on the line out whenever the ipod is off. This could be really bad for your headphones if you are connected through a DC coupled amplifier (like my mini^3).
I also plugged it into my scope, and verified the .5v is usually just DC, but that occasionally (maybe 10% of the time) it's got some triangular pulses on it.
I'd suggest people stay away from the 1.1 update
--
nine
null sig (for now)
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01-19-2008, 09:58 PM
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Head-Fi'er
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Join Date: Jan 2008
Location: Trondheim, Norway
Posts: 56
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That doesn't sound healthy... sounds like something you should report to Apple - is that possible?
__________________
-Lars
Sources: Rockboxed iPod Video 60gb • Dell Inspiron 9400
Amp: Headstage Lyrix Pro total
Headphones: Audio-Technica ATH-ESW9 • Koss PortaPro
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01-19-2008, 11:32 PM
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500+ Head-Fi'er
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Join Date: Aug 2005
Location: Down the road and turn right
Posts: 775
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Ahh the explanation for what so many of us are experiencing - hiss and static noises after the iPod is turned off. Well done Apple - your quality control department must have been fired by now with crap update after crap update slipping through?
__________________
160GB iPod Classick | 8G 2G iPod Nano | XIN SuperMini-3 Amp
Senn PX100 | HD 25-1 | Grado HF-1 | Audio-Technica ATH-ESW9 | ATH-CM700 | ATH-AD2000
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01-19-2008, 11:34 PM
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Junior Head-Fi'er
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Join Date: Dec 2007
Location: Littleton, CO
Posts: 26
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Quote:
Originally Posted by delaril
That doesn't sound healthy... sounds like something you should report to Apple - is that possible?
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I've filed it as a bug through ADC, although it's a little bit different to the type of bug they are used to getting that way. We'll see what happens
nine
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01-20-2008, 12:04 AM
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Head-Fi'er
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Join Date: Jan 2008
Location: Trondheim, Norway
Posts: 56
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So they actually have a bug reporting system! That's good, at least. I haven't used the original firmware in a long time, so I've never had to check. For all you 6G folks' sakes, I hope Apple will release a fix promptly.
__________________
-Lars
Sources: Rockboxed iPod Video 60gb • Dell Inspiron 9400
Amp: Headstage Lyrix Pro total
Headphones: Audio-Technica ATH-ESW9 • Koss PortaPro
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01-20-2008, 01:36 AM
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100+ Head-Fi'er
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Join Date: Jan 2003
Location: Philadelphia
Posts: 376
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My memory may be faulty about this, but isn't there a 1.3 firmware update for the classic? If so, does this have he asme problem?
__________________
"All things work out in the end. If it is not working out, it is not the end."
Equipment: Headphones: Grado RS-1, AKG K1000, Sennheiser 600, Yuin PK2 and PK3, Bose In ear, Head-Direct RE2.
Amps: Minibox E, Cayin HA-1, Headphonia
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01-20-2008, 01:54 AM
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100+ Head-Fi'er
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Join Date: Jun 2006
Location: Ft. Lauderdale
Posts: 344
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Quote:
Originally Posted by Barry
My memory may be faulty about this, but isn't there a 1.3 firmware update for the classic? If so, does this have he asme problem?
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No. 1.1 is the newest. I'm downloading it as we speak
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Furthur!
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01-20-2008, 01:58 AM
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100+ Head-Fi'er
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Join Date: Jan 2003
Location: Philadelphia
Posts: 376
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Ah. I was thinking of 1.03. Hope Apple fixes the glitch!
__________________
"All things work out in the end. If it is not working out, it is not the end."
Equipment: Headphones: Grado RS-1, AKG K1000, Sennheiser 600, Yuin PK2 and PK3, Bose In ear, Head-Direct RE2.
Amps: Minibox E, Cayin HA-1, Headphonia
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01-20-2008, 02:17 AM
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Head-Fi'er
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Join Date: Oct 2007
Location: Ontario, Canada
Posts: 35
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Great. I'm experiencing the noise too. Didn't notice it until updating to 1.1 from 1.0.3. I just sent Apple some feedback.
Does anybody know if this will drain the battery?
Will it damage my amp or my car setup if left connected?
Unimpressed. 
__________________
Keith.
Next headphone: Denon D7000 or ATH-A2000X
Portable: 6G iPod classic 160GB > ALO Au/Ag Custom iPod Dock > 2007 HeadRoom Desktop Portable > Shure SE530
Computer: 15" PowerBook G4 1.33GHz > Kimber USB Cable > 2007 HeadRoom Desktop Portable > ATH-W5000 (F5005) or AudioQuest Mini-1 > Yamaha AX-490 > Paradigm Monitor 3
Best Sound: Panasonic DVD-RV32 > AudioQuest OptiLink-3 > 2007 HeadRoom Desktop Portable > ATH-W5000 (F5005)
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01-20-2008, 04:59 AM
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Banned
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Join Date: Mar 2007
Location: Salem, Oregon
Posts: 642
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Just be thankful they didn't charge you $20 bux for it, I guess.
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01-20-2008, 05:12 AM
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100+ Head-Fi'er
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Join Date: Nov 2007
Location: Vancouver
Posts: 252
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Quote:
Originally Posted by Night Surfer
Just be thankful they didn't charge you $20 bux for it, I guess.
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LOL. 
My brother has an ipod touch and he was like whatever, didn't care about the update. Guess it matters to those who need the apps in the first place.
I agree the quality control on ipods seems to be an issue everywhere I read.
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01-20-2008, 10:29 AM
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1000+ Head-Fi'er
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Join Date: May 2005
Location: England
Posts: 1,405
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Glad I'm not the only one who noticed this. The hiss is diabolical with e4's. I'll be even less impressed if the battery drains faster when turned off too. 
Last edited by DJShadow; 01-20-2008 at 05:35 PM.
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01-20-2008, 01:50 PM
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500+ Head-Fi'er
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Join Date: Jul 2006
Posts: 694
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Yes, I've noticed it as well and am glad of the explanation. The hiss is not always there ... maybe the thing turns off after time, or perhaps it makes a difference how the iPod is turned off?
__________________
iTunes -> USB -> Micro DAC -> ALO Jena Cryo m2m -> Micro Amp -> AKG K 701
iPod Classic -> ALO Jena Cryo LOD -> Micro Amp -> Shure E4c
Recent Obsession: Umphrey's McGee (You have to hear this band if you haven't already!)
Selected Rock: Ben Folds, Sufjan Stevens, Frank Zappa, Grateful Dead, Richard Thompson, Phish, Ani Difranco, Tori Amos, Kate Bush, Peter Gabriel, Roy Harper
Selected Classical & Jazz: Shostakovich, Steve Reich, John Adams, Sorabji, Mahler, Arvo Part, Keith Jarrett, John Zorn
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01-20-2008, 01:59 PM
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100+ Head-Fi'er
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Join Date: Nov 2007
Location: Vancouver
Posts: 252
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I would just exchange it for another just to make sure it's not the device. If you get the same problem with the new one, then it's probably a defect in the series. Maybe a flash model is better or just another brand.
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01-20-2008, 02:20 PM
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500+ Head-Fi'er
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Join Date: Jul 2006
Posts: 694
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Quote:
Originally Posted by serpico
I would just exchange it for another just to make sure it's not the device. If you get the same problem with the new one, then it's probably a defect in the series. Maybe a flash model is better or just another brand.
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Haven't had the problem until the new firmware update: I didn't make the connection until I saw this thread.
__________________
iTunes -> USB -> Micro DAC -> ALO Jena Cryo m2m -> Micro Amp -> AKG K 701
iPod Classic -> ALO Jena Cryo LOD -> Micro Amp -> Shure E4c
Recent Obsession: Umphrey's McGee (You have to hear this band if you haven't already!)
Selected Rock: Ben Folds, Sufjan Stevens, Frank Zappa, Grateful Dead, Richard Thompson, Phish, Ani Difranco, Tori Amos, Kate Bush, Peter Gabriel, Roy Harper
Selected Classical & Jazz: Shostakovich, Steve Reich, John Adams, Sorabji, Mahler, Arvo Part, Keith Jarrett, John Zorn
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