Astell & Kern A&ultima SP4000 Copper Limited Edition Portable High-Resolution Digital Audio Player for tv applied channel

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Start your DJ journey with HDJ-CUE1 headphones

You have to hear it to know what you’ve been missing

Knowles BA drivers

where every note is a step into a vivid soundscape of discovery

Astell & Kern A&ultima SP4000 Copper Limited Edition Portable High-Resolution Digital Audio Player for tv applied channelLimited Edition Copper The A&ultima SP4000 Copper Limited Edition goes beyond a high end portable audio player. It represents the culmination of Astell&Kerns expertise in material engineering, precision manufacturing, and refined analog sound design. SP4000 Copper is the brands most definitive answer to a single question: how far can we go in the pursuit of the ultimate sound? Copper is theoretically one of the most ideal materials for audio, yet