Astell&Kern A&Ultima SP4000 - Flagship DAP Case The combination of 4 high-quality

The combination of 4 high-quality Knowles BA drivers gives the Norn great high-frequency extension and clear positioning of the instruments with the utmost clarity and detail

The principle is that applying different operating voltages to the vacuum tube's plate changes its operating state

Modular design for versatility

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Astell&Kern A&Ultima SP4000 - Flagship DAP Case The combination of 4 high-qualityDelivery time approx. 1 week Reviews "The Astell&Kern SP4000 probably is the best DAP on the market right now from a technical point of view. The only downsides this time are the heavy price tag, the large dimensions and the heavy weight." Astell&Kern SP4000 Review Headfonia "You have to be realistic, because at this flagship level, you cant reinvent the wheel. But A&K managed to come up with a very focused, impressive finetuning where I hear notes in