FiiO K11 Silver Headphone Amplifier USB DAC

FiiO K11 Silver Headphone Amplifier USB DAC

118.80 $

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Description

FiiO K11 (FIO-K11-S) in silver.
Purchased in December 2025, but selling because I bought a different audio interface.
Lightly cleaned and tested.
Handled with care, so it's in excellent condition.
All accessories are included.

Price is firm.
Retail price: ¥23,000

DAC Chip: CS43198
Amplifier Technology: Dual independent headphone amplifier circuits
Digital Inputs:
- USB Type-C x1
- RCA Coaxial x1
- Optical TOS x1
Digital Output:
- RCA Coaxial x1 (mutually exclusive with RCA Coaxial input)
Headphone Outputs:
- 4.4mm Balanced x1
- 6.35mm Single-ended x1
Supported Sampling Rates:
- USB: PCM 384kHz/32bit, DSD 256 (Native)
- RCA Coaxial: PCM 192kHz/24bit
- Optical TOS: PCM 96kHz/24bit
Recommended Headphone Impedance: 16-300Ω
Output Power:
- ≥520mW (Single-ended, 32Ω load / THD+N<1% / High Gain)
- ≥60mW (Single-ended, 300Ω load / THD+N<1% / High Gain)
- ≥1400mW (Balanced, 32Ω load / THD+N<1% / High Gain)
- ≥250mW (Balanced, 300Ω load / THD+N<1% / High Gain)
Frequency Response: 20Hz-50kHz
S/N Ratio: ≥123dB (A-weighted)
THD+N: <0.00035% (Line Out / 1kHz / 10kΩ)
Noise Floor:
- <2.8uV (Single-ended, A-weighted)
- <4.9uV (Balanced, A-weighted)
Output Impedance:
- 1.2Ω (Single-ended, 32Ω load)
- 2.4Ω (Balanced, 32Ω load)
Dimensions: 147x133x32.3mm
Weight: Approx. 407g
Accessories:
- AC adapter
- Power cable
- USB Type A to C cable
- 6.3mm to 3.5mm adapter
- Quick start guide
- Warranty card

Details

Category
Headphone Amplifier / Dac
Brand
FiiO
Condition
Almost new
Shipping
Included in price (by seller)
From
Unspecified

video

Delivery in 24/48 h

SHIPPINGS

Free shipping in Spanish mainland, Balearic Islands and Portugal.

For other countries the shipping cost will be paid by the client.

DELIVERY TIME (as of delivery)

Spanish mainland, Balearic Islands and Portugal: 1-2 working days.

Other countries, we attach a table with those that are open in the online store, indicating transporter and transit days.

Free returns

The return period is 14 calendar days from the receipt of the order.

Carriers for change of size in Spanish mainland, Balearic Islands and Portugal, are in charge of 24HRS.