Question about FiiO K11

The FiiO K11 is more than sufficient to operate both the Sennheiser HD560S and the Sennheiser HD600.

- The FiiO K11 offers an output power of 1400 mW, which makes it capable of driving both in-ear earphones and over-ear headphones with ease.
- The K11's three gain levels and volume curves allow it to adapt to headphones with different impedances, which is particularly useful for the Sennheiser HD600 with an impedance of 300 ohms and the HD560S with a similar impedance.
- The specially developed audio circuit and power supply of the K11 ensure a pure and stable power supply, which is essential for the optimal operation of hi-fi headphones such as the Sennheiser HD560S and HD600.