Douk Audio P1vsFosi Audio Box X4
A detailed side-by-side comparison of the Douk Audio P1 and Fosi Audio Box X4 — two popular preamps in the Chinese HiFi space.
Specifications
Spec
Douk Audio P1
Fosi Audio Box X4
Tubes
Jan5654W × 2
Jan5654W × 2
Inputs
RCA, Bluetooth 5.0, USB
Phono (MM), Bluetooth 5.0
Outputs
RCA, 3.5mm Headphone
RCA, 3.5mm Headphone
Features
Tone Control Bypass, VU Meter (Screen based), AptX HD
Bass/Treble Controls, Ground Post
Topology
—
Phono Preamp (MM) + Tube Buffer
Remote Control
✗
✗
Tube Stage
✓
✓
Phono Stage
✗
✓
Headphone Amp
✓
✓
Price (estimated)
Price
~$99
~$79
Difference
~$20.00 cheaper (Fosi Audio Box X4)
Things to Know
Douk Audio P1
- ⚠The 'screen' VU meter is small and purely decorative.
- ⚠USB input is legacy (limited resolution compared to dedicated DACs).
- ⚠Knobs can feel a bit crowded on the front faceplate.
Fosi Audio Box X4
- ⚠Headphone output is relatively weak and can sound thin with high-impedance headphones.
- ⚠Tube sockets are extremely tight; changing tubes requires significant force and care.
- ⚠Bluetooth input is 'always on' and can be hijacked by neighbors if not paired.
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