FiiO
KA13
interface_dac
$76
Used market: $45*
Specifications
5 of 10 values have a recorded source- Type
- Dongle Adapter·
- Bus Powered
- yes·
- Max Gain dB
- 0·
- Analog Inputs
- ·
- Analog Outputs
- 3.5mm Headphones, 4.4mm Balanced Headphones·
- Digital Inputs
- USB-C·
- Min Usb Power W
- 2.5✓
- Headphone Output
- Max Power mW: 50 · Max Voltage Vrms: 1.22 · At Impedance ohms: 32 · Output Impedance ohms: 1.7·
- Max Sample Rate kHz
- 384·
- Phantom Power Provided
- no·
Expert Audio Engineering Commentary
Headroom Notes
Same two-mode trap as the KA17, but wider: 5 mW into 300 ohms on phone power against 19.5 mW in Desktop Mode, a 2x voltage difference from one line of the same table. Phone-mode numbers are recorded. The 2.3 Vrms figure quoted in most shop listings is the Desktop-Mode value and does not apply to a phone.
Amplification Warning
Output impedance is <1.7 ohms on 3.5 mm — high enough to shift the tonal balance of a multi-driver IEM whose impedance curve is not flat. This is not a dongle for 8-ohm balanced-armature sets.
Setups using this gear
ATH-R70x, 470 Ω: the $76 dongle against the desktop DAC, and why 16 dB decides itSony MDR-7506: the same 16 dB between dongle and desktop DAC, and it changes nothingiPhone 16 and AKG K371: the cheapest USB-C dongle is already 5.3 dB more than enoughHD 560S on a Pixel 10: the spec sheet answers this one without arithmetic
* Estimated with the depreciation fallback (~59% retained value). · checked on 8/5/2026