The KA17 sounds good, boasting an impressive set of features and excellent driving power. It seamlessly transitions between roles as a desktop DAC and a portable companion, setting itself apart from conventional desktop DAC/AMP configurations. While the K9 might offer slightly better sound quality (I can’t debate on that since I don’t own one), it comes at twice the price of the KA17 and functions solely as a desktop DAC. Additionally, the KA17 occupies way less desk space compared to a desktop DAC/AMP, making it ideal for those with limited desk space and especially for those who want to experiment with multiple DACs. Furthermore, for individuals primarily interested in IEMs, recently released dongle DACs offer sound quality that is surprisingly close to a proper desktop DAC/AMP setup.
Consider this: not everyone owns a DAP, and FiiO’s more budget-friendly one is priced at $700. Spending that much on a portable music player could already be a stretch for many. A more budget-friendly approach would be to pair your existing smartphone and PC with a quality dongle DAC—such as the KA17 or the Bluetooth-capable BTR15—yielding two functional listening setups at a fraction of the cost.
Regarding the battery matter, FiiO is already contemplating a seamlessly integrated battery solution for the KA17, which would make it an even more versatile device.
Ultimately, if you already own a high-tier DAP and a high-tier desktop DAC/AMP, it’s understandable that a sub-$200 portable DAC may not capture your interest.
If you don’t see any value in this product, it may simply not align with your specific needs, and that's perfectly fine.