{"product_id":"apos-certified-fiio-k11-r2r-balanced-desktop-dac-amp","title":"FiiO K11 R2R Balanced Desktop DAC\/Amp (Apos Certified)","description":"\u003ch1 dir=\"ltr\"\u003e\u003cstrong\u003eTrue R2R sound for under $200\u003c\/strong\u003e\u003c\/h1\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eExperience a new dimension of audio fidelity with the FiiO K11 R2R Balanced Desktop DAC\/Amp. Designed for audiophiles who crave authentic sound, this DAC\/Amp is packed with advanced features that bring your music to life. From its fully differential true 24bit R2R DAC to its customizable RGB lighting, the K11 R2R offers a totally immersive listening experience.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eFully differential true 24-bit R2R DAC resistor arrays\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe K11 R2R features FIIO's self-developed four-channel fully differential 24bit R2R DAC. Each channel consists of 48 precision thin-film resistor arrays, totaling 192 resistors with 0.1% tolerance and low temperature drift (30ppm). This meticulous configuration delivers a unique and charming sound, capturing every nuance of your favorite tracks.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eDual NOS\/OS modes\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eNOS (Non-Oversampling) Mode\u003c\/span\u003e\u003cspan\u003e: Preserves the original sampling rate for decoding—maintaining the authentic sound of your music. \u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eOS (Oversampling) Mode\u003c\/span\u003e\u003cspan\u003e: Upsamples to a high sampling rate of 384kHz, providing superior audio performance with even more refined, clear sound.\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eTrue 24-bit decoding\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eSupporting PCM 384kHz\/24bit and DSD256 decoding, the K11 R2R can easily handle high-precision audio signals. This ensures that you hear every detail, providing an excellent audio experience. *DSD256 requires setting the DSD output mode to Native on the source device, internally converting to PCM before being decoded by the R2R resistor arrays.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eNJW1195A high-quality electronic volume control\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe K11 R2R uses the NJW1195A, a 4-channel electronic volume controller. This resistor ladder electronic potentiometer offers low distortion and low noise, allowing for precise volume adjustment, ensuring your audio is always at the perfect level.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003e3 gain levels + 3 independent volume curves\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eWith three independent gain levels and volume curves, the K11 R2R adapts to various types of headphones, whether you're using sensitive earphones or harder-to-drive over-ear headphones. This customization ensures a tailored listening experience.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eDigital audio bridge: specially-designed audio circuit\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe K11 R2R employs a sophisticated audio circuit. The audio signal is transmitted via a USB interface processor to a digital audio bridge, then processed by an FPGA before being sent to the R2R DAC for 4-channel output. It passes through two Ti OPA1642 op-amps for low-pass filtering and single-ended analog signal converting, then to the NJW1195A for precise volume adjustment. Finally, two SGM8262 op-amps handle 4-way phase inversion and amplification, resulting in balanced and single-ended analog outputs.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eSpecially-designed power supply\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe K11 R2R's power supply system uses up to 17 low-noise LDO precision regulator ICs and two DC-DC converters, providing multi-channel specialized power supplies. Combined with an external custom 12V switching power supply, it ensures the purity of the power and supports strong power output. This results in a stable, clean power supply and high-quality sound.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eHigh-quality Beryl solid capacitors\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe capacitors' ultra-low ESR and excellent anti-interference capabilities ensure a stable and clean power supply, contributing to the K11 R2R's high-quality sound.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003e1300mW + 1300mW Powerful output\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eWith the capability to push 1300mW+1300mW under balanced modes, the K11 R2R can drive many HiFi earphones and headphones, unlocking their full potential and delivering powerful, detailed audio.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eHigh-contrast LCD screen\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eA custom, high-contrast LCD screen allows you to easily see the sampling rate, volume, gain, or output mode at a glance. The durable screen is always on with no burn-in, ensuring you always have the information you need with none of the drawbacks of lesser screens. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eOne source of total control\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe K11 R2R's multi-function volume knob controls power, menu operations, volume adjustments, and other functions. Quickly switch between PO\/PRE (LO SE)\/LO modes by double-pressing the knob.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eAdjustable RGB logo lighting\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe FIIO logo features RGB lighting, helping you quickly identify the sampling rate of the current audio. Six LED strips and reflective design elements ensure uniform and elegant lighting.\u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 dir=\"ltr\"\u003e\u003cstrong\u003eComprehensive safety systems\u003c\/strong\u003e\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eRCA metal pressing\u003c\/span\u003e\u003cspan\u003e: Enhanced stability, reliable connection, and durability.\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eHeadphone amplifier heat dissipation upgrade\u003c\/span\u003e\u003cspan\u003e: Thermal silicone gel and aluminum alloy ensure fast heat dissipation.\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eExclusive phosphor copper metal shielding\u003c\/span\u003e\u003cspan\u003e: Provides corrosion resistance and anti-oxidation capabilities, effectively resisting external interference for accurate signal processing.\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eFully differential true 24bit R2R DAC with 192 precision resistors\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eDual NOS\/OS modes for customizable sound\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eSupports PCM 384kHz\/24bit and DSD256 decoding\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eNJW1195A high-quality electronic volume control\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eThree gain levels and independent volume curves\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eSpecially-designed digital audio bridge circuit\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eAdvanced power supply with 17 low-noise LDO precision regulator ICs\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eHigh-quality Beryl solid capacitors\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003ePowerful output: 1300mW+1300mW under balanced modes\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eDurable, high-contrast LCD screen\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eMulti-function volume knob with quick mode switching\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eAdjustable RGB logo lighting\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eComprehensive safety systems\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eName\/Model\u003c\/span\u003e\u003cspan\u003e: K11 R2R\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eHardware solution\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eSoC: GD32F303RE\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eDAC: FIIO-developed R2R DAC\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eUSB decoding: SA9312L\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eAMP: SGM8262-2*2\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eColor\u003c\/span\u003e\u003cspan\u003e: Black\/Silver\/Red\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eVolume control\u003c\/span\u003e\u003cspan\u003e: Volume knob\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003cspan\u003e: About 420g\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003cspan\u003e: 147x133x32.3mm (including feet)\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eGain\u003c\/span\u003e\u003cspan\u003e: L\/M\/H\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eAdaptive impedance\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003ePO: 8~150Ω\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eBAL: 8~350Ω\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eDriver-free mode (switch mode)\u003c\/span\u003e\u003cspan\u003e: Supported\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eOversampling setting\u003c\/span\u003e\u003cspan\u003e: OS\/NOS\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eFIIO Control\u003c\/span\u003e\u003cspan\u003e: N\/A\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eMax supported sampling rate\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e384kHz-32bit\/DSD256 (USB DAC)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e192kHz-24bit (Coaxial)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e96kHz-24bit (Optical)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eSampling rate indication\u003c\/span\u003e\u003cspan\u003e: Show on display screen\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eLOGO indicator light\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eCyan: 48KHz and below\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eYellow: above 48kHz\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eGreen: DSD\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eFirmware upgrade\u003c\/span\u003e\u003cspan\u003e: Supports upgrade through USB\u003c\/span\u003e\u003c\/p\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eButtons and Ports\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eKnob\u003c\/span\u003e\u003cspan\u003e: Encoder knob (including volume adjusting and menu confirming)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eUSB\u003c\/span\u003e\u003cspan\u003e: Type-C (data transmission)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eSingle-ended line-out\u003c\/span\u003e\u003cspan\u003e: RCA port\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eDigital optical in\u003c\/span\u003e\u003cspan\u003e: Optical port\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eDigital coaxial in\u003c\/span\u003e\u003cspan\u003e: RCA port\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eDigital coaxial out\u003c\/span\u003e\u003cspan\u003e: RCA port (only works in USB mode)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eBalanced out\u003c\/span\u003e\u003cspan\u003e: Standard 4.4mm port\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eHeadphone out\u003c\/span\u003e\u003cspan\u003e: Standard 6.35mm port\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003ePower Supply Parameters\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003ePower supply\u003c\/span\u003e\u003cspan\u003e: DC 12V\/2A\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eBattery capacity\u003c\/span\u003e\u003cspan\u003e: No battery\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp dir=\"ltr\"\u003e\u003cspan\u003eAudio Parameters\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eParts of performance and parameters of Line-out output (RCA, OS mode)\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e20Hz~50kHz: damping＜1.2dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e20Hz~20KHz: damping＜0.2dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cul\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eTHD+N \u0026amp; Noise\u003c\/span\u003e\u003cspan\u003e: About 0.025% (1kHz\/0dB@10KΩ)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eSNR\u003c\/span\u003e\u003cspan\u003e: ≥115dB (A-weighted)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eCrosstalk\u003c\/span\u003e\u003cspan\u003e: ≥111dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eNoise floor\u003c\/span\u003e\u003cspan\u003e: ＜5.1uV (A-weighted)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eFrequency response\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eDynamic range\u003c\/span\u003e\u003cspan\u003e: ≥107dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eLine output level\u003c\/span\u003e\u003cspan\u003e: 2.7Vrms\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eParts of performance and parameters of headphone output (6.35mm, OS mode)\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eL+R≥660mW +660mW (16Ω，THD+N＜1%)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eL+R≥460mW +460mW (32Ω，THD+N＜1%)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eL+R≥50mW +50mW (300Ω，THD+N＜1%)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cul\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e20Hz~50kHz: damping＜1.3dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e20Hz~20KHz: damping＜0.2dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cul\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eOutput power\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eTHD+N\u003c\/span\u003e\u003cspan\u003e: About 0.025% (1kHz\/0dB@32Ω)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eSNR\u003c\/span\u003e\u003cspan\u003e: ≥115dB (A-weighted)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eNoise floor\u003c\/span\u003e\u003cspan\u003e: ＜7.2uV (A-weighted)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eChannel crosstalk\u003c\/span\u003e\u003cspan\u003e: ≥72dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eDynamic range\u003c\/span\u003e\u003cspan\u003e: ≥107dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eFrequency response\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eOutput impedance\u003c\/span\u003e\u003cspan\u003e: ＜1Ω\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003ePeak output voltage\u003c\/span\u003e\u003cspan\u003e: 11Vp-p\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eParts of performance and parameters of headphone output (4.4mm, OS mode)\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003cul\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eL+R≥520mW +520mW (16Ω, THD+N＜1%)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eL+R≥1300mW +1300mW (32Ω, THD+N＜1%)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eL+R≥220mW +220mW (300Ω, THD+N＜1%)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cul\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e20Hz~50kHz: damping＜1.3dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"3\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e20Hz~20KHz: damping＜0.2dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cul\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eOutput power\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eTHD+N\u003c\/span\u003e\u003cspan\u003e: About 0.025% (1kHz\/-11.6dB@32Ω)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eSNR\u003c\/span\u003e\u003cspan\u003e: ≥115dB (A-weighted)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eNoise floor\u003c\/span\u003e\u003cspan\u003e: ＜14.1uV (A-weighted)\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eChannel crosstalk\u003c\/span\u003e\u003cspan\u003e: ≥107dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eDynamic range\u003c\/span\u003e\u003cspan\u003e: ≥107dB\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eFrequency response\u003c\/span\u003e\u003cspan\u003e:\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eOutput impedance\u003c\/span\u003e\u003cspan\u003e: ＜1.5Ω\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"2\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003ePeak output voltage\u003c\/span\u003e\u003cspan\u003e: 23Vp-p\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/ul\u003e\n \u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eK11 R2R\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003ePower adapter\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003ePower cable\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eUSB data cable\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eHeadphone adapter\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eQuick start guide\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n \u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003eWarranty card\u003c\/span\u003e\u003c\/p\u003e\n \u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\u003cstrong\u003eFeatured reviews\u003c\/strong\u003e\u003c\/h3\u003e\n \u003cp\u003e\u003cstrong\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/GbLyUQ8Fi6M?si=fxjMqOng2HKIgzbh\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003cem\u003e\"If you like a warmer, smoother, more classically musical sound signature, this is gonna be right up your alley. It's a great budget option with a lot of great features. And for the price point, it has really good sonic properties.\" -Joshua Valour \u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/6Aykq2k_k-g?si=-hhmjdquG6sGfnzt\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/em\u003e\u003cem\u003e\"If you're less about detail and want a fun and enjoyable sound, the K11 is a great alternative to a chip DAC like the Schiit Magni.\" -Forever Analog \u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/mFVKG9KvLfg?si=bGkzI6LGKX55V6yY\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/em\u003e\u003cem\u003e\"This is f*cking great. This has a flavor to it. It's competing with DACs that are $1,1000. I love it.\" -Zeos Pantera\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/c41v3m8GMHk?si=JuUCBltNRcamY3Q6\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\"\u003c\/em\u003e\u003cem\u003eWould I buy one? I'm already in the process of buying it. It's excellent.\" -The Boomer Consumer\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/4n1OqJFEKWQ?si=pmJLTnmWR3C52CRQ\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/em\u003e\u003cem\u003e\"An easy recommendation. Currently one of the very best \u0026lt;$200 all-in-one DAC\/Amps.\" -Passion for Sound\u003c\/em\u003e\u003c\/p\u003e\n \u003c!----\u003e","brand":"FiiO","offers":[{"title":"Black \/ Open Box - Like New","offer_id":46866227953839,"sku":"APS-AC-0927-1-LN","price":139.99,"currency_code":"USD","in_stock":true},{"title":"Silver \/ Open box - Acceptable","offer_id":46866227986607,"sku":"APS-AC-0927-2-A","price":139.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ Open Box - Acceptable","offer_id":46866228019375,"sku":"APS-AC-0927-1-A","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/apos-audio-fiio-headphone-dac-amp-fiio-k11-r2r-balanced-desktop-dac-amp-apos-certified-refurbished-42490413383916.png?v=1777716446","url":"https:\/\/freshized.com\/products\/apos-certified-fiio-k11-r2r-balanced-desktop-dac-amp","provider":"Freshized","version":"1.0","type":"link"}