FiiO K11 R2R Balanced Desktop DAC/Amp

True R2R sound for under $200 Experience 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. Fully differential true 24-bit R2R DAC resistor arrays The K11 R2R features FIIO's self-developed four-channel fully differential 24bit R2R DAC.

1% tolerance and low temperature drift (30ppm). This meticulous configuration delivers a unique and charming sound, capturing every nuance of your favorite tracks.

Dual NOS/OS modes NOS (Non-Oversampling) Mode: Preserves the original sampling rate for decoding—maintaining the authentic sound of your music. OS (Oversampling) Mode: Upsamples to a high sampling rate of 384kHz, providing superior audio performance with even more refined, clear sound.

True 24-bit decoding Supporting PCM 384kHz/24bit and DSD256 decoding, the K11 R2R can easily handle high-precision audio signals. *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.

NJW1195A high-quality electronic volume control The K11 R2R uses the NJW1195A, a 4-channel electronic volume controller. 3 gain levels + 3 independent volume curves With 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. Digital audio bridge: specially-designed audio circuit The 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. Specially-designed power supply The 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.

1300mW + 1300mW Powerful output With 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. High-contrast LCD screen A 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. One source of total control The 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. Adjustable RGB logo lighting The 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. Comprehensive safety systems RCA metal pressing: Enhanced stability, reliable connection, and durability.

Headphone amplifier heat dissipation upgrade: Thermal silicone gel and aluminum alloy ensure fast heat dissipation. Exclusive phosphor copper metal shielding: Provides corrosion resistance and anti-oxidation capabilities, effectively resisting external interference for accurate signal processing.

5Ω Peak output voltage: 23Vp-p What's included K11 R2R Power adapter Power cable USB data cable Headphone adapter Quick start guide Warranty card Featured reviews "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.

" -Forever Analog "This is f*cking great. This has a flavor to it.

It's competing with DACs that are $1,1000. " -Zeos Pantera "Would I buy one?

I'm already in the process of buying it. " -The Boomer Consumer "An easy recommendation.

" -Passion for Sound

Standard 6.35mm port, L+R≥660mW +660mW (16Ω，THD+N<1%) L+R≥460mW +460mW (32Ω，THD+N<1%) L+R≥50mW +50mW (300Ω，THD+N<1%) 20Hz~50kHz: damping <1.3dB 20Hz~20KHz: damping <0.2dB THD+N: About 0.025% (1kHz/0dB@32Ω) SNR: ≥115dB (A-weighted) Noise floor: <7.2uV (A-weighted) Channel crosstalk: ≥72dB Dynamic range: ≥107dB Output impedance: <1Ω Peak output voltage: 11Vp-p, L+R≥520mW +520mW (16Ω, THD+N<1%) L+R≥1300mW +1300mW (32Ω, THD+N<1%) L+R≥220mW +220mW (300Ω, THD+N<1%) 20Hz~50kHz: damping <1.3dB 20Hz~20KHz: damping <0.2dB THD+N: About 0.025% (1kHz/-11.6dB@32Ω) SNR: ≥115dB (A-weighted) Noise floor: <14.1uV (A-weighted) Channel crosstalk: ≥107dB Dynamic range: ≥107dB Output impedance: <1.5Ω Peak output voltage: 23Vp-p