Aiyima A07 MaxvsOldchen (Laochen) EL34-B
A detailed side-by-side comparison of the Aiyima A07 Max and Oldchen (Laochen) EL34-B — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Aiyima A07 Max
Oldchen (Laochen) EL34-B
Class
D
A
Chipset
TI TPA3255
—
Topology
Stereo / Mono
Single Ended Triode (SET)
Power
2 × 300W (4Ω) @ 48V
10W x 2
Inputs
RCA
—
Features
Venting on sides (improved cooling)
—
Tubes
—
EL34 x2, 6N9P x2, 5U4G x1
Wiring
—
Point-to-Point (Hardwired)
Remote Control
✗
✗
Tube Stage
✗
✓
Price (estimated)
Price
~$65
~$170
Difference
~$105.00 cheaper (Aiyima A07 Max)
Things to Know
Aiyima A07 Max
- ⚠Vents are located on the bottom/sides, which is better than the original but still relies on passive convection.
- ⚠Some users report 'sparking' at the DC input jack when connecting power (connect brick to wall last).
- ⚠Aux output is not a true variable pre-out.
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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