Fosi Audio P3vsTopping L70
A detailed side-by-side comparison of the Fosi Audio P3 and Topping L70 — two popular preamps in the Chinese HiFi space.
Specifications
Spec
Fosi Audio P3
Topping L70
Tubes
5654W × 2 (Replaceable with 6J1, 6AK5, EF95)
—
Topology
Hybrid Tube Preamp
NFCA (Nested Feedback Composite Amplifier)
Inputs
RCA, Bluetooth 5.1
XLR (Balanced), RCA
Outputs
RCA, 3.5mm Headphone, 3.5mm Aux
XLR Pre-out, RCA Pre-out, 4.4mm/XLR/6.35mm Headphone
Features
Bass/Treble Tone Controls, Reset Button for Tone Defeat
Relay Volume Control, Remote Control, Ground Loop Switch
Remote Control
✗
✓
Tube Stage
✓
✗
Phono Stage
✗
✗
Headphone Amp
✓
✓
Price (estimated)
Price
~$79
~$279
Difference
~$200.00 cheaper (Fosi Audio P3)
Things to Know
Fosi Audio P3
- ⚠Bluetooth input is always active/discoverable if not connected.
- ⚠Tube socket is tight; swapping tubes requires care to avoid bending pins.
- ⚠No remote control.
Topping L70
- ⚠Rear panel is extremely crowded; thick XLR cables can be difficult to unplug.
- ⚠The 'clicking' sound of the volume relays is audible inside the chassis when changing volume (normal but surprising to new users).
- ⚠Display menu system is somewhat cryptic (abbreviations like 'H-G' for High Gain).
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