Editing IPod (section)

== Hardware ==
{| class="wikitable"
|+Chipsets and electronics
!Chipset or electronic
!Product(s)
!Component(s)
|-
|rowspan=9|Microcontroller
|iPod Classic 1st to 3rd generations
|Two [[ARM7TDMI]]-derived [[CPU core|cores]] running at 90&nbsp;MHz
|-
|iPod Classic 4th and 5th generations, iPod Mini, iPod Nano 1st generation
|Variable-speed ARM7TDMI cores, running at a peak of 80&nbsp;MHz to save battery life
|-
|iPod Classic 6th generation, iPod Nano 2nd generation onwards, iPod Shuffle 2nd generation onwards
|[[Samsung]] [[System-on-a-chip]], based around an [[ARM architecture|ARM processor]].<ref>{{cite web|title=mobile SoC|url=https://www.samsung.com/global/business/semiconductor/products/mobilesoc/Products_MobileSoC.html|url-status=dead|archive-url=https://web.archive.org/web/20080225041633/https://www.samsung.com/global/business/semiconductor/products/mobilesoc/Products_MobileSoC.html|archive-date=February 25, 2008|access-date=August 4, 2009|publisher=Samsung Group}}</ref>
|-
|iPod Shuffle 1st generation
|[[SigmaTel]] D-Major STMP3550 chip running at 75&nbsp;MHz that handles both the music decoding and the audio circuitry.<ref>Williams, Martyn. [https://www.pcworld.com/article/119799-1/article.html How Much Should an IPod Shuffle Cost?] {{Webarchive|url=https://web.archive.org/web/20110605222020/http://www.pcworld.com/article/119799-1/article.html |date=June 5, 2011 }}, ''[[PC World (magazine)|PC World]]'', February 24, 2005. Retrieved on August 14, 2006.</ref>
|-
|iPod Touch 1st and 2nd generation
| ARM 1176JZ(F)-S at 412&nbsp;MHz for 1st gen, 533&nbsp;MHz for 2nd gen.
|-
|iPod Touch 3rd and [[IPod Touch 4th Generation|4th generation]]
| ARM Cortex A8 at 600&nbsp;MHz for 3rd gen, 800&nbsp;MHz for 4th gen. ([[Apple A4]])
|-
|[[IPod Touch (5th generation)|iPod Touch 5th generation]]
| ARM Cortex A9 at 800&nbsp;MHz ([[Apple A5]])
|-
|[[IPod Touch (6th generation)|iPod Touch 6th generation]]
| Apple [[ARMv8-A]] "Typhoon" at 1.1&nbsp;GHz ([[Apple A8]]) with Apple M8 [[Apple motion coprocessors|Motion coprocessor]]
|-
||[[IPod Touch (7th generation)|iPod Touch 7th generation]]
| Apple [[ARMv8-A]] "Hurricane" and "Zephyr" at 1.64&nbsp;GHz ([[Apple A10|Apple A10 Fusion]]) with Apple M10 [[Apple motion coprocessors|Motion coprocessor]]
|-
|rowspan=2|Audio chip
|iPod Classic 1st to 5th generation, iPod Touch 1st generation, iPod Nano 1st to 3rd generation, iPod Mini<ref>[[Macworld (magazine)|Macworld]] [https://www.macworld.co.uk/ipod-itunes/news/index.cfm?RSS&NewsID=20818 Wolfson loses Apple iPod business] {{Webarchive|url=https://web.archive.org/web/20110610175720/http://www.macworld.co.uk/ipod-itunes/news/index.cfm?RSS&NewsID=20818 |date=June 10, 2011 }}</ref>
|[[Codec|Audio Codecs]] developed by [[Wolfson Microelectronics]]
|-
|iPod Classic 6th generation, iPod Touch 2nd generation onwards, iPod Shuffle, iPod Nano 4th generation onwards
|[[Cirrus Logic]] Audio Codec Chip
|-
|Video chip
|iPod Classic 5th generation
|[[Broadcom]] BCM2722 [[VideoCore]] 2 [[graphics processor]]<ref>{{Cite web |last=Ecker |first=Clint |date=2005-10-20 |title=Video iPod |url=https://arstechnica.com/gadgets/2005/10/video-ipod/ |access-date=2023-07-13 |website=Ars Technica |language=en-us |archive-date=July 28, 2024 |archive-url=https://web.archive.org/web/20240728040212/https://arstechnica.com/gadgets/2005/10/video-ipod/ |url-status=live }}</ref>
|-
|rowspan=4|Storage medium
|iPod Classic
|45.7&nbsp;mm (1.8&nbsp;in) hard drives ([[ATA-6]], 4200&nbsp;rpm with [[Zero insertion force|ZIF connectors]]) made by [[Toshiba]]
|-
|iPod Mini
|25.4&nbsp;mm (1&nbsp;in) [[Microdrive]] by [[Hitachi, Ltd.|Hitachi]] and [[Seagate Technology|Seagate]]
|-
|iPod Nano
|[[Flash memory]] from [[Samsung]], [[Toshiba]], and others
|-
|iPod Shuffle and Touch
|Flash memory
|-
|rowspan=2|Batteries
|iPod Classic 1st and 2nd generation
|Internal Recyclable [[Lithium Polymer]] Batteries
|-
|iPod Classic 3rd generation onwards, iPod Mini, iPod Nano, iPod Touch, iPod Shuffle
|Internal Recyclable [[lithium-ion battery|Lithium-Ion Batteries]]
|-
|rowspan=5|Display
|iPod Nano 7th generation
|2.5-inch (diagonal) [[Multi-Touch]], 432-by-240 resolution at 202 [[pixels per inch]]<ref>{{cite web|title=iPod nano Technical Specifications|url=https://www.apple.com/ipodnano/specs.html|url-status=dead|archive-url=https://archive.today/20060207232138/http://www.apple.com/ipodnano/specs.html|archive-date=February 7, 2006|access-date=January 27, 2013|publisher=Apple Inc.}}</ref>
|-
|iPod Classic 5th and 6th generation
|2.5-inch (diagonal) [[LCD|color LCD]] with [[backlight|LED backlight]], [[Quarter VGA|320-by-240 resolution]] at 163 [[pixels per inch]]<ref>{{cite web |title=iPod classic Technical Specifications |url=https://www.apple.com/ipodclassic/specs.html |publisher=Apple Inc. |access-date=August 4, 2009 |archive-date=November 24, 2010 |archive-url=https://web.archive.org/web/20101124103330/https://www.apple.com/ipodclassic/specs.html |url-status=live }}</ref>
|-
|iPod Touch 1st to 3rd generation
|3.5-inch (diagonal) [[widescreen]] [[Multi-Touch]], 480-by-320 resolution at 163 [[pixels per inch]]
|-
|iPod Touch 4th generation
|3.5-inch (diagonal) [[widescreen]] [[Multi-Touch]], 960-by-640 resolution at 326 [[pixels per inch]]
|-
|iPod Touch 5th to 7th generation
|4-inch (diagonal) [[widescreen]] [[Multi-Touch]], 1136-by-640 resolution at 326 [[pixels per inch]]<ref>{{cite web |title=iPod touch Technical Specifications |url=https://www.apple.com/ipodtouch/specs.html |publisher=Apple Inc. |access-date=January 27, 2013 |archive-date=September 10, 2007 |archive-url=https://web.archive.org/web/20070910165251/http://www.apple.com/ipodtouch/specs.html |url-status=live }}</ref>
|}

=== Audio ===
Audio tests showed that the third-generation iPod has a weak bass response.<ref name=playertest>Machrone, Bill. [https://home.comcast.net./~machrone/playertest/playertest.htm iPod audio measurements] {{webarchive |url=https://archive.today/20121220045904/http://home.comcast.net/~machrone/playertest/playertest.htm |date=December 20, 2012}}, ''[[PC Magazine]]'', 2005. Retrieved on February 17, 2007.</ref><ref>Heijligers, Marc. [https://members.chello.nl/~m.heijligers/ipod/Performance/measurements.html iPod audio measurements]. Retrieved on February 17, 2007.</ref> The combination of the undersized DC-blocking [[capacitor]]s and the typical low [[electrical impedance|impedance]] of most consumer headphones form a [[high-pass filter]], which attenuates the low-frequency bass output. Similar capacitors were used in the fourth-generation iPods.<ref>Heijligers, Marc. [https://homepage.mac.com/marc.heijligers/audio/ipod/engineering/engineering.html iPod circuit design engineering] {{webarchive |url=https://web.archive.org/web/20060505034356/https://homepage.mac.com/marc.heijligers/audio/ipod/engineering/engineering.html |date=May 5, 2006}}, May 2006. Retrieved on February 17, 2007.</ref> The problem is reduced when using high-impedance headphones and is completely masked when driving high-impedance (line level) loads, such as when using an external [[headphone amplifier]]. The first-generation iPod Shuffle uses a [[Bridge tied load|dual-transistor output stage]],<ref name=playertest /> rather than a single capacitor-coupled output, and does not exhibit reduced bass response for any load.

For all iPods released in 2006 and earlier, some [[Equalization (audio)|equalizer (EQ)]] sound settings can easily distort the bass sound, even on undemanding tracks.<ref>Vaughan, Austin. {{cite web |url=https://www.dapreview.net/news.php?extend.642 |title=Tweaking the iPod equalizer |archive-url=https://web.archive.org/web/20131029202329/https://www.dapreview.net/news.php?extend.642 |archive-date=October 29, 2013 |url-status=dead}}, ''DAP review'', November 8, 2004. Retrieved on September 14, 2012.</ref><ref>Handby, Simon. {{cite web|title=Apple iPod 60&nbsp;GB review|url=https://www.expertreviews.co.uk/mp3-players/81586/apple-ipod-60gb|url-status=dead|archive-url=https://web.archive.org/web/20130516030004/https://www.expertreviews.co.uk/mp3-players/81586/apple-ipod-60gb|archive-date=May 16, 2013}}, ''Expert Reviews'', December 19, 2005. Retrieved on September 14, 2012.</ref> This occurs when using EQ settings such as R&B, Rock, Acoustic, and Bass Booster, because the equalizer amplifies the digital audio level beyond the software's limit, causing distortion ([[clipping (audio)|clipping]]) on bass instruments.

From the fifth-generation iPod on, Apple introduced a user-configurable volume limit in response to concerns about hearing loss.<ref name=volumelimit>Cohen, Peter. [https://www.macworld.com/article/50101/2006/03/ipodupdate.html iPod update limits iPod volume setting] {{Webarchive|url=https://web.archive.org/web/20120210202124/http://www.macworld.com/article/50101/2006/03/ipodupdate.html |date=February 10, 2012 }}, Macworld, 2006. Retrieved on November 7, 2008.</ref> Users report that in the sixth-generation iPod, the maximum volume output level is limited to 100&nbsp;dB in EU markets. Apple previously had to remove iPods from shelves in France for exceeding this legal limit.<ref name=ipodsfrance>Fried, Ian. [https://news.cnet.com/2100-1040-960211.html Apple pulls iPod in France] {{Webarchive|url=https://web.archive.org/web/20240728040314/https://www.cnet.com/ |date=July 28, 2024 }}. Retrieved on November 7, 2008.</ref> However, users who bought new sixth-generation iPods in late 2013 reported a new option that allowed them to disable the EU volume limit.<ref>{{cite web|url=https://discussions.apple.com/thread/4952197|title=New Option to turn off EU Volume Cap? - Official Apple Support Communities|website=discussions.apple.com|access-date=December 22, 2014|archive-date=September 13, 2014|archive-url=https://web.archive.org/web/20140913054129/https://discussions.apple.com/thread/4952197|url-status=live}}</ref> Some have attributed this change to a software update that shipped with these devices.<ref>{{cite web|url=https://www.amazon.co.uk/review/RECVDB6UEZDJN/ref=cm_cr_pr_viewpnt#RECVDB6UEZDJN|title=Traffic's review of Apple iPod classic 160&nbsp;GB Black – 7th Gene...|website=www.amazon.co.uk|archive-url=https://web.archive.org/web/20161011162151/https://www.amazon.co.uk/review/RECVDB6UEZDJN/ref=cm_cr_pr_viewpnt#RECVDB6UEZDJN|archive-date=October 11, 2016|url-status=dead}}</ref> Older sixth-generation iPods, however, are unable to update to this software version.<ref>{{cite web|url=https://discussions.apple.com/message/24230919#24230919|title=Why Can't I Update My Ipod Classic to 2.0.5 – Communities|website=discussions.apple.com|access-date=December 22, 2014|archive-date=September 13, 2014|archive-url=https://web.archive.org/web/20140913154634/https://discussions.apple.com/message/24230919#24230919|url-status=live}}</ref>

=== Connectivity ===
{{see also|Dock connector#Apple dock connectors|l1=Apple dock connectors}}
[[File:Apple iPod Chargers.jpg|thumb|right|Four iPod wall chargers for [[NEMA connector|North America]], all made by Apple. These have FireWire (left) and USB (right three) connectors, which allow iPods to charge without a computer. The unit second-to-left appears to be a model number A1102 unit. The units have been [[Miniaturization|miniaturized]] over time.]]
Originally, a [[FireWire]] connection to the host computer was used to update songs or recharge the [[battery (electricity)|battery]]. The battery could also be charged with a power adapter that was included with the first four generations.

The third generation began including a 30-pin [[dock connector]], allowing for FireWire or [[USB]] connectivity. This provided better compatibility with non-Apple machines, as most of them did not have FireWire ports at the time. Eventually, Apple began shipping iPods with USB cables instead of FireWire, although the latter was available separately. As of the first-generation iPod Nano and the fifth-generation iPod Classic, Apple discontinued using FireWire for data transfer (while still allowing for use of FireWire to charge the device) in an attempt to reduce cost and form factor. As of the second-generation iPod Touch and the fourth-generation iPod Nano, FireWire charging ability has been removed. The second-, third-, and fourth-generation iPod Shuffle uses a single [[Phone connector (audio)|3.5&nbsp;mm minijack phone connector]] which acts as both a headphone jack or a USB data and charging port for the dock/cable.

The dock connector also allowed the iPod to connect to accessories, which often supplement the iPod's music, video, and photo playback. Apple sold a few accessories, such as the now-discontinued [[iPod Hi-Fi]], but most are manufactured by third parties such as [[Belkin]] and Griffin. Some peripherals use their own interface, while others use the iPod's own screen. Because the dock connector is a proprietary interface, the implementation of the interface requires paying royalties to Apple.<ref>{{cite magazine |first= Joel |last= Johnson |title= How the "Apple Tax" Boosts Prices on iPod & iPhone Accessories |url= https://www.popularmechanics.com/technology/industry/4272628.html?page=1 |magazine= [[Popular Mechanics]] |date= July 10, 2008 |access-date= September 9, 2008 |url-status= dead |archive-url= https://web.archive.org/web/20080817114656/https://www.popularmechanics.com/technology/industry/4272628.html?page=1 |archive-date= August 17, 2008 |df= mdy-all }}</ref>

Apple introduced a new 8-pin dock connector, named [[Lightning (connector)|Lightning]], on September 12, 2012 with their announcement of the [[iPhone 5]], the fifth-generation [[iPod Touch]], and the seventh-generation [[iPod Nano]], which all feature it. The new connector replaces the older 30-pin dock connector used by older iPods, iPhones, and iPads. Apple Lightning cables have pins on both sides of the plug so it can be inserted with either side facing up.<ref>{{cite web|url=https://www.apple.com/iphone/features|title=iPhone|website=Apple|access-date=August 19, 2014|archive-date=September 15, 2012|archive-url=https://web.archive.org/web/20120915011745/http://www.apple.com/iphone/features/|url-status=live}}</ref>

Bluetooth connectivity was added to the last model of the iPod Nano, and Wi-Fi to the iPod Touch.

=== Accessories ===
{{Gallery
|title=iPod earbuds
|align=right
|File:IPod Earbuds.JPG |
 alt1=Two early designs of [[Apple earbuds]]
 |Two early designs of [[iPod earphones]]
|File:EarPods derecho.JPG |
 alt2=EarPods
 |Apple [[Apple earbuds#EarPods|EarPods]], introduced 2012
}}
[[File:Made for iPod.svg|thumb|right|150px|The "Made for iPod" logo found on most classic iPod accessories]]
Many accessories have been made for the iPod line. A large number have been made by third-party companies, although many, such as the [[iPod Hi-Fi]] and [[iPod Socks]], have been made by Apple. Some accessories added extra features that other music players have, such as sound recorders, FM radio tuners, wired remote controls, and [[composite video]] cables for TV connections. Other accessories offered unique features like the [[Nike+iPod]] pedometer and the iPod Camera Connector. Other notable accessories included external speakers, wireless remote controls, protective case, screen films, and wireless earphones.<ref>[https://www.etymotic.com/ephp/er88.aspx In-The-Ear Bluetooth Earphones] {{webarchive |url=https://web.archive.org/web/20090220103013/https://www.etymotic.com/ephp/er88.aspx |date=February 20, 2009}}. Retrieved on February 17, 2007.</ref> Among the first accessory manufacturers were Griffin Technology, [[Belkin]], [[JBL (company)|JBL]], [[Bose Corporation|Bose]], [[Monster Cable]], and [[SendStation Systems|SendStation]].

[[BMW]] released the first iPod automobile interface,<ref>[https://www.ipodyourbmw.com/ iPod Your BMW] {{webarchive |url=https://web.archive.org/web/20070423230915/https://www.ipodyourbmw.com/ |date=April 23, 2007}}. Retrieved on February 17, 2007.</ref> allowing drivers of newer BMW vehicles to control an iPod using either the built-in steering wheel controls or the radio head-unit buttons. Apple announced in 2005 that similar systems would be available for other vehicle brands, including [[Mercedes-Benz]],<ref>[https://www.apple.com/pr/library/2005/jan/11mercedes.html Apple & Mercedes-Benz Unveil iPod Integration Kit] {{webarchive |url=https://web.archive.org/web/20110521114057/https://www.apple.com/pr/library/2005/jan/11mercedes.html |date=May 21, 2011}}, Apple Inc., January 11, 2005. Retrieved on June 20, 2006.</ref> [[Volvo Cars|Volvo]],<ref>[https://www.apple.com/pr/library/2005/jan/11volvo.html Apple & Volvo Announce iPod Connectivity For Entire 2005 US Model Line] {{webarchive |url=https://web.archive.org/web/20110329023151/https://www.apple.com/pr/library/2005/jan/11volvo.html |date=March 29, 2011}}, Apple Inc., January 11, 2005. Retrieved on June 20, 2006.</ref> [[Nissan]], [[Toyota]],<ref>{{cite web |url=https://www.gizmag.com/go/7945/ |title=Toyota introduce iPod integration kit |publisher=Gizmag.com |date=September 4, 2007 |access-date=June 2, 2010 |archive-date=August 12, 2011 |archive-url=https://web.archive.org/web/20110812024322/http://www.gizmag.com/go/7945/ |url-status=live }}</ref> [[Alfa Romeo]], [[Ferrari]],<ref>[https://www.apple.com/pr/library/2005/jan/11cars.html Apple & Leading Car Companies Team Up to Deliver iPod Integration in 2005] {{webarchive |url=https://web.archive.org/web/20110507164102/https://www.apple.com/pr/library/2005/jan/11cars.html |date=May 7, 2011}}, Apple Inc., January 11, 2005. Retrieved on June 20, 2006.</ref> [[Acura]], [[Audi]], [[Honda]],<ref>[https://web.archive.org/web/20070421131407/http://automobiles.honda.com/models/audio_accessories.asp?ModelName=Accord+Coupe&PHOTO=0 Honda Music Link for iPods], [[Honda]]. Retrieved on February 17, 2007.</ref> [[Renault]], [[Infiniti]]<ref>{{cite web|url=https://www.apple.com/ipod/car-integration/#bmw|title=Your iPod just called shotgun|publisher=apple.com|access-date=June 4, 2015|archive-date=June 2, 2015|archive-url=https://web.archive.org/web/20150602181847/http://www.apple.com/ipod/car-integration/#bmw|url-status=live}}</ref> and [[Volkswagen]].<ref>[https://www.apple.com/pr/library/2005/sep/07ipod_auto.html Apple Teams Up With Acura, Audi, Honda & Volkswagen to Deliver Seamless iPod Experience] {{webarchive |url=https://web.archive.org/web/20110521113707/https://www.apple.com/pr/library/2005/sep/07ipod_auto.html |date=May 21, 2011}}, Apple Inc., September 7, 2005. Retrieved on June 20, 2006.</ref> [[Scion (car)|Scion]] offered standard iPod connectivity on all their cars.

Some independent stereo manufacturers including [[JVC]], [[Pioneer Corporation|Pioneer]], [[Kenwood Electronics|Kenwood]], [[Alpine Electronics|Alpine]], [[Sony]], and [[Harman Kardon]] also had iPod-specific integration solutions. Alternative connection methods included adapter kits (that use the [[cassette deck]] or the CD changer port), audio input jacks, and FM transmitters such as the [[iTrip]]—although personal FM transmitters are illegal in some countries. Many car manufacturers have added audio input jacks as standard.<ref>[https://www.apple.com/ipod/carintegration.html Car Integration: iPod your car] {{webarchive |url=https://web.archive.org/web/20140820190456/https://www.apple.com/ipod/carintegration.html |date=August 20, 2014}}, Apple Inc.. Retrieved on February 17, 2007.</ref>

Beginning in mid-2007, four major airlines, [[United Airlines|United]], [[Continental Airlines|Continental]], [[Delta Air Lines|Delta]], and [[Emirates (airline)|Emirates]], reached agreements to install iPod seat connections. The free service allowed passengers to power and charge an iPod, and view video and music libraries on individual seat-back displays.<ref>[https://www.apple.com/pr/library/2006/nov/14ipod.html Apple Teams Up With Continental, Delta, Emirates, & United to deliver iPod Integration] {{webarchive |url=https://web.archive.org/web/20110624093652/https://www.apple.com/pr/library/2006/nov/14ipod.html |date=June 24, 2011}}, Apple Inc., November 14, 2006. Retrieved on December 7, 2006.</ref> Originally [[KLM]] and [[Air France]] were reported to be part of the deal with Apple, but they later released statements explaining that they were only contemplating the possibility of incorporating such systems.<ref>Marsal, Katie. [https://archive.today/20120718133550/https://www.appleinsider.com/articles/06/11/15/two_of_six_airlines_say_theres_no_ink_on_ipod_deal.html Two of six airlines say there's no ink on iPod deal], ''AppleInsider'', November 15, 2006. Retrieved on December 7, 2006.</ref>