Aiyima T9 ProvsOldchen (Laochen) EL34-B
A detailed side-by-side comparison of the Aiyima T9 Pro and Oldchen (Laochen) EL34-B — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Aiyima T9 Pro
Oldchen (Laochen) EL34-B
Class
D (Hybrid)
A
Chipset
TPA3250 + Jan5725 Tubes
—
Power
2 × 100W @ 4Ω
10W x 2
Inputs
Optical, Coax, USB, RCA, Bluetooth
—
Features
VU Meter (Active), Tone Controls, Remote
—
Topology
—
Single Ended Triode (SET)
Tubes
—
EL34 x2, 6N9P x2, 5U4G x1
Wiring
—
Point-to-Point (Hardwired)
Remote Control
✓
✗
Tube Stage
✓
✓
Price (estimated)
Price
~$118
~$170
Difference
~$52.00 cheaper (Aiyima T9 Pro)
Things to Know
Aiyima T9 Pro
- ⚠VU meter sensitivity is not adjustable; barely moves at low volumes.
- ⚠The tube stage adds measurable distortion (2nd harmonic), which is intentional for 'flavor' but not high-fidelity.
- ⚠Runs quite warm due to the tubes and internal DAC.
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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