FiiO K11 Desktop DAC and Headphone Amplifier - CS43198 DAC, 1400mW Balanced Output, 3 Gain Levels, RGB Logo Lighting The FiiO K11 is a landmark desktop DAC and headphone amplifier that redefines what an entry-level desktop audio device can offer. Combining a CS43198 flagship DAC chip with a specially designed balanced audio circuit, comprehensive input and output connectivity, and a remarkably slim aluminum alloy chassis, the K11 delivers genuine hi-fi performance and versatility that far exceeds expectations at its price point. Whether you are building your first serious desktop audio setup or expanding an existing system, the FiiO K11 is engineered to be the central hub of your listening experience. At the heart of the K11 is the CS43198 DAC chip, supporting PCM up to 384kHz/32-bit and DSD256 (Native) via USB, as well as PCM 192kHz/24-bit via coaxial and PCM 96kHz/24-bit via optical inputs. This flagship-grade DAC chip delivers the clean, detailed, and musically engaging character that CS-series chips are renowned for, with an SNR of ≥123dB (A-weighted) and a noise floor below 2.8μV on the single-ended headphone output and below 4.9μV on the balanced output. The hardware solution includes the GD32F303RE SoC, SA9312L USB decoder, MS8422N SPDIF decoder, and SGM8262-2×2 amplifier chips - a precisely matched component set delivering stable, high-quality audio across all inputs. Output power is exceptional for the K11's class. The 4.4mm balanced headphone output delivers up to 1400mW 1400mW at 32Ω and 250mW 250mW at 300Ω, while the 6.35mm single-ended headphone output provides 520mW 520mW at 32Ω and 60mW 60mW at 300Ω - more than adequate for both sensitive in-ear monitors and demanding full-sized headphones. Output impedance is below 1.2Ω (single-ended) and below 2.4Ω (balanced), ensuring clean, controlled amplification with any headphone in your collection. The K11's connectivity is equally impressive. Inputs include USB Type-C (data transmission), optical (TOSLINK), and coaxial (RCA), while outputs include the 4.4mm balanced headphone out, 6.35mm single-ended headphone out, RCA line out, and coaxial digital out (USB mode only). A dedicated input selector button with flowing RGB switching animation makes changing sources effortless. The RCA line output measures 1.95Vrms with a THD N below 0.00035% and SNR ≥126dB, making the K11 an excellent source component for an active speaker system. Three independent gain levels (L/M/H), each with its own dedicated volume curve, allow precise matching to headphones of any impedance and sensitivity - from ultra-sensitive IEMs to power-hungry planar magnetic over-ears. Volume is controlled via a multi-function encoder knob that also handles power on/off, menu navigation, source switching, and LO/PO mode toggling with a double-press - each mode independently remembering its last volume setting. The custom high-contrast LCD display shows sampling rate, volume, gain, and output mode at a glance, while the adjustable RGB logo lighting provides real-time sampling rate indication: Cyan for ≤48kHz, Yellow for above 48kHz, and Green for DSD. The FiiO K11 operates in driver-free mode on Windows 10 and above, and is plug-and-play compatible with PS5 and Nintendo Switch for elevated gaming audio. Power is supplied by an included external DC 12V/2A switching power supply, backed by more than 16 low-noise LDO precision regulators within the K11 for clean, stable power to every circuit stage. The slim aluminum alloy chassis with silicone anti-slip pad measures just 147×133×32.3mm and weighs approximately 407g - compact enough for any desktop setup. Available in Obsidian Black and Midnight Silver.
