The KA11 measures 44.5 x 9.7 x 10.5 mm and weighs 8.5 grams. Its aluminium and magnesium alloy housing comes in two tones, black and silver. The USB-C cable is fixed and measures 65.5 mm, to connect the dongle to an Android device. You then plug your headphones into the 3.5 mm jack.
The converter is a CS43131, supported by an SGM8262 operational amplifier. The whole chain accepts up to 384 kHz at 32 bits as well as DSD256, and the KA11 is Hi-Res Audio certified. The circuit board is immersion gold plated and the conductors are palladium-plated oxygen-free copper.
Into 16 ohms, the output delivers 245 mW per channel, 200 mW into 32 ohms and 22 mW into 300 ohms. The stated signal-to-noise ratio reaches 125 dB into 32 ohms, for a noise floor below 1.7 microvolts. Output impedance stays under 0.7 ohm and distortion under 0.0006 %. UAC 1.0 mode is supported for playback without delay.
Data sheet
Specific References
The FiiO FT13 is a closed-back over-ear headphone with amaranth wood ear cups, a 60 mm dynamic driver, and a W-shaped diaphragm, and is Hi-Res Audio certified.
The FiiO FT5 in black are open-back over-ear headphones with a 90 mm planar magnetic driver, supplied with four interchangeable audio plugs.
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