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FiiO K13 R2R 24Bit Fully Balanced R2R DAC and Headphone Amplifier
The FiiO K13 R2R is a fully balanced desktop DAC/amp built around a proprietary four-channel, 24-bit R2R resistor-array DAC. Each channel uses 48 precision thin-film resistors (0.1% tolerance, 30 ppm temp drift) for a total of 192 resistors, delivering a rich, musical presentation with a darker, lower-noise background. Dual operating modes—NOS (non-oversampling) and OS (oversampling to 384 kHz)—let you tailor the sound, while an XMOS XU316 platform enables a 10-band PEQ you can control via the FiiO app or web interface. With a robust, fully differential amplifier stage rated at up to 2,400 mW + 2,400 mW into 32 Ω, the K13 R2R confidently drives IEMs and full-size headphones. Convenience features include Bluetooth 5.4 (LDAC/AAC/SBC) reception, an always-on HD LCD, dual-knob controls with IR remote, adjustable RGB logo lighting, and multiple protection systems—all inside a thick, unibody aluminum chassis with the new “skylight” design window.
Features
- Four-channel fully differential 24-bit R2R DAC with 48 precision resistors per channel (192 total)
- 0.1% thin-film resistors with 30 ppm temperature drift for accuracy and stability
- Fully differential signal path (DAC → LPF → volume → headphone amp) for low noise and minimal distortion
- Dual modes: NOS preserves native sampling; OS upsamples globally to 384 kHz
- PCM up to 384 kHz/32-bit and DSD256 native decoding
- 10-band high-precision PEQ (up to PCM 192 kHz/24-bit) via app or web; import/export/share EQ, Auto-EQ
- Balanced output power up to 2,400 mW + 2,400 mW (32 Ω)
- Three gain levels with independent volume memories for PO and PRE outputs
- Bluetooth 5.4 receiver with LDAC/AAC/SBC; wired USB input via XMOS XU316
- Preamp + power-amp output roles; desktop hub with versatile I/O
- Always-on HD LCD for sample rate, volume, gain, and output status
- Adjustable RGB logo lighting (also indicates sampling rate)
- Overheat/overload protections and 1–99 minute timer shutdown
- Unibody aluminum alloy chassis with “skylight” window; dual-knob control and IR remote
Specifications
Digital & DAC
- DAC Topology: 4-channel fully differential 24-bit R2R resistor array
- Resistor Network: 48 thin-film resistors per channel (192 total), 0.1% tolerance, 30 ppm
- PCM Support: Up to 384 kHz/32-bit
- DSD Support: Native DSD256 (1-bit); note: lower output level is normal with DSD
- Operating Modes: NOS (non-oversampling), OS (global upsampling to 384 kHz)
- DSP/USB Platform: XMOS XU316
- PEQ: 10-band (to PCM 192 kHz/24-bit), presets, import/export/share, Auto-EQ
Amplifier
- Architecture: Fully differential (DAC → LPF → volume → amp)
- Balanced Output Power: 2,400 mW + 2,400 mW @ 32 Ω
- Gain Levels: 3 steps; independent volume memories for PO/PRE
- Protections: Overheating and overload; POP noise suppression; headphone protection
Connectivity
- Wireless: Bluetooth 5.4 (LDAC/AAC/SBC reception)
- Control: FiiO Control app; web PEQ (USB input, EQ enabled)
- Roles: Preamplifier & power-amplifier output modes
- Display & UI: HD LCD (always-on), dual-knob control, IR remote
- Lighting: RGB logo with brightness/colour/pulse customization
Power & Build
- Internal PSU: 30 W switching power supply with nickel-plated alloy shielding
- External DC Input: 12 V ⎓ ≥2.5 A (5.5 × 2.1 mm barrel)
- Power Rails: Multi-rail with up to 18 low-noise LDOs + 5 DC-DC converters
- Capacitors: ELNA RA3 silk-film & specialized audio-grade tantalum electrolytics
- Chassis: Unibody aluminum alloy with “skylight” design
What’s in the Box
- K13 R2R unit, IR remote control, AC power cord, USB data cable
- Headphone adapter, quick start guide, warranty card
Physical
- Dimensions (W × D × H): — mm
- Weight: — kg
Product Details
- FiiO K13 R2R
-
Brand New : Factory Sealed
- EAN : 6953175710844
- EFLC : 15246
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Warranty
One Year Warranty
- Parts and Labour Warranty
- Canada-wide Coverage
- FiiO Authorized
Returns
Easy Returns
- 30-day return window on eligible items
- Full refund issued in accordance with our return policy
About FiiO
FiiO offers a focused lineup selected for practical features and long-term value. We've been carrying FiiO since 2014.
Explore our current FiiO selection and best sellers. We offer both new and open-box items, and everything is clearly marked. Popular categories include Portable Music Players, Headphone Cables, In-Ear Headphones.
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