IPod the iPod Nano and Shuffle from its stores, marking the end of Apple producing standalone music players. Currently, the iPod Touch is the only iPod produced by Apple. The third-generation iPod had a weak bass response, as shown in audio tests. The combination of the undersized DC-blocking capacitors and the typical low 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. The problem is reduced when using high-impedance headphones and is completely masked when driving high-impedance (line level) loads, such as an external headphone amplifier. The
Zeppelin (iPod speaker system) Zeppelin (iPod speaker system) The Zeppelin (iPod Speaker System) is a group of speaker systems sold, designed, and manufactured by the English audio company Bowers & Wilkins for use with the iPod. . The original speaker, the Zeppelin, was on sale from 2006-2011." WhatHiFi" considered that it "set the benchmark for premium iPod speaker docks". The device has now been updated, and renamed the Zeppelin Air. It received substantial reviews by "PC magazine", which rated it "excellent", and from "What HiFi". The firm also uses the Zeppelin brand to market the Zeppelin Mini, which was reviewed by "PCmag", and What