Description
Elevate your desktop listening with the FiiO K7, a compact all-in-one DAC and headphone amplifier for audiophiles who demand balanced performance. Built around dual AK4493SEQ DACs and dual THX AAA 788+ amplifier modules, the K7 delivers a truly balanced signal path that minimizes crosstalk and maximizes channel separation. Whether driving sensitive IEMs or planar magnetic headphones, it provides up to 2000mW per channel on the 4.4mm balanced output and 1220mW on the 6.35mm single-ended jack, handling impedances from 16Ω to 300Ω.
The XMOS XUF208 decoder natively supports PCM up to 384kHz/32-bit and DSD256 over USB, while optical, coaxial, and RCA inputs extend compatibility to home audio setups. An external 12V switching power supply feeds multiple independent LDO-regulated stages for clean, noise-free delivery. The all-aluminum CNC-machined chassis measures just 120 × 168 × 55mm and weighs 610g. Gold THX and Hi-Res Audio badges sit alongside an RGB ring that illuminates the volume knob with dynamic color effects during power-up and playback.
Reviewers describe the K7 as offering a neutral-leaning tonal balance with strong resolution on balanced output and an impressive power-to-price ratio. The ADC-based volume control provides 112 finely-tuned steps with excellent channel balance at the lowest levels.
Specifications
| DAC | AK4493SEQ × 2 |
| Decoder | XMOS XUF208 |
| Amplifier | Dual THX AAA 788+ |
| Volume IC | NJU72315 × 2 |
| Inputs | USB-B, Optical (TOSLINK), Coaxial (RCA), RCA Line In |
| Outputs | 6.35mm SE, 4.4mm balanced, RCA Line Out |
| Max USB sampling | PCM 384kHz/32-bit, DSD256 |
| Balanced output @ 32Ω | ≥2000mW per channel (THD+N < 1%) |
| Single-ended output @ 32Ω | ≥1220mW per channel (THD+N < 1%) |
| Balanced output @ 300Ω | ≥560mW per channel (THD+N < 1%) |
| SNR (USB) | ≥120dB (A-weighted) |
| Output impedance | <1Ω (32Ω load) |
| Gain | Low / High (2 levels) |
| Power supply | External DC 12V/2A switching adapter |
| Dimensions | ≈120 × 168 × 55mm |
| Weight | ≈610g |
| Architecture | Truly balanced (analog + digital) |
| Volume control | Potentiometer + ADC sampling (112 steps) |
| Protection | Overheating, overload, DC protection |
