Fosi Audio MC101vsOldchen (Laochen) EL34-B
A detailed side-by-side comparison of the Fosi Audio MC101 and Oldchen (Laochen) EL34-B — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Fosi Audio MC101
Oldchen (Laochen) EL34-B
Class
D
A
Chipset
TI TPA3116D2
—
Power
2 × 100W (Max claim) / Realistic ~30W clean
10W x 2
Inputs
RCA, Bluetooth 5.3
—
Features
Large Illuminated VU Meter, Tone Controls
—
Topology
—
Single Ended Triode (SET)
Tubes
—
EL34 x2, 6N9P x2, 5U4G x1
Wiring
—
Point-to-Point (Hardwired)
Remote Control
✗
✗
Tube Stage
✗
✓
Price (estimated)
Price
~$62
~$170
Difference
~$108.00 cheaper (Fosi Audio MC101)
Things to Know
Fosi Audio MC101
- ⚠Uses the older, noisier TPA3116 chip (higher noise floor than V3/A07).
- ⚠Bluetooth only supports SBC/AAC (no AptX/LDAC).
- ⚠Speaker terminals are very close together; difficult to use with thick cables.
Oldchen (Laochen) EL34-B
- ⚠The '5U4G' rectifier is often wired in hybrid mode with silicon diodes, which purists dislike.
- ⚠Transformers run very hot, suggesting they are pushed near their saturation limits.
- ⚠Stock Chinese EL34 tubes can sound harsh compared to budget re-issues like Mullard or JJ.
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