Fosi Audio Box X2vsTopping L70
A detailed side-by-side comparison of the Fosi Audio Box X2 and Topping L70 — two popular preamps in the Chinese HiFi space.
Specifications
Spec
Fosi Audio Box X2
Topping L70
Tubes
6J2 × 2 (Replaceable with 5654W)
—
Topology
Phono Preamp (MM) + Tube Buffer
NFCA (Nested Feedback Composite Amplifier)
Inputs
Phono (MM) RCA
XLR (Balanced), RCA
Outputs
RCA
XLR Pre-out, RCA Pre-out, 4.4mm/XLR/6.35mm Headphone
Features
Adjustable Gain Settings (39/42/45 dB)
Relay Volume Control, Remote Control, Ground Loop Switch
Remote Control
✗
✓
Tube Stage
✓
✗
Phono Stage
✓
✗
Headphone Amp
✗
✓
Price (estimated)
Price
~$69
~$279
Difference
~$210.00 cheaper (Fosi Audio Box X2)
Things to Know
Fosi Audio Box X2
- ⚠No power switch on the front (toggle switch is on the cable or back depending on revision).
- ⚠Stock tubes (6J2) are often microphonic; upgrading to GE 5654W or Riverstone tubes is almost mandatory.
- ⚠Can introduce hum if placed too close to power amplifiers or WiFi routers.
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).
* As an affiliate, we may earn a small commission from qualifying purchases — at no extra cost to you.
Related Comparisons
Fosi Audio Box X2 vs Fosi Audio P3Topping L70 vs Fosi Audio P3Fosi Audio Box X2 vs Topping Pre90Topping L70 vs Topping Pre90Fosi Audio Box X2 vs Musician MonocerosTopping L70 vs Musician MonocerosFosi Audio Box X2 vs Aiyima T8Topping L70 vs Aiyima T8Fosi Audio Box X2 vs Singxer SA-1 V2Topping L70 vs Singxer SA-1 V2Fosi Audio Box X2 vs Douk Audio P1Topping L70 vs Douk Audio P1