FiiO K11 - R2R DAC Headphone Amplifier

FIIO's newly self-developed four-channel fully differential 24bit R2R DAC consists of 2x 48 precision thin-film resistor arrays per channel, totaling 192 resistors with 0.1% tolerance and low temperature drift (30ppm). This configuration delivers a unique and charming sound. Fully differential true 24Bit R2R DAC Resistor ArraysNOS/OS dual modes High quality electronic volume control NJW1195A 1300mW+1300mW high output power3 gain levels, 3 volume curves Specially-designed audio circuitSpecially-designed power supply High-quality Beryl solid capacitorsCustom LCD screenRGB logo lighting. High-Precision Lossless Parametric EQ The BTR17 features a high-precision lossless parametric equalizer (PEQ). The continuously refined proprietary PEQ adjustment algorithms allow you to finely adjust EQ and frequency points,gain bandwidth, and Q value to your liking. Dual Cores and Four Channel ESS DACs Inside the BTR17 are tow ESS ES9069Q DACs based on fourth-generation 32-bit HyperStream architecture, achieving high performance while using less power. The architecture helps to further reduce digital noise within the DAC, allowing it to hit 103dB dynamic range and -120 dB total harmonic distortion, resulting in a richer, musical sound against a clean audio background. THX AAA 78+ Headphone Amplifier The BTR17 uses the THX AAA 78+ headphone amplifier, the same amp used in the renowned FiiO KA17 and M23. The four-channel fully balanced design utilizes eight op-amps in parallel to ensure robust yet controlled power, for a clearer and more natural sound. Multi-Stage HiFi Audio Architecture The BTR17 integrated mid-to-high-end HiFi player-level signal processing within its compact body. Digital signals are deftly handled by the dual-clock digital audio and DAC. LPF preamplification and multi-stage analog audio processing ensure details and the dynamic range within audio signals are precisely restored, comparable to premium digital audio players. Comprehensive Protection Circuits Built-in temperature and DC output detection prevents damage to the device and headphones if abnormal conditions are detected for safer usage. Volume limit prevents accidental loud volumes and protects against hearing damage. All New User Interface The new UI made possible by the 1.3" IPS color screen supports both Chinese and English displays. The font color even changes along with the audio format. The overall design ensures the user can intuitively use it and easily grasp its current status.