
EMI AC Filter Board
The EMI board treats the incoming mains before it enters the transformer and regulation stage. Its role is to reduce line-borne interference, preserve current delivery, and give the rest of the power chain a cleaner starting point.
| Feature | Factory PSU | LHY AUDIO LPS-T8 Upgrade | Result For The T8 |
|---|---|---|---|
| Filtering Architecture | Standard two-stage filter with generic safety capacitors. |
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BenefitImproves rejection of line-borne interference across a wider frequency range. |
| Safety Capacitors | Standard industrial-grade safety capacitors. |
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BenefitSupports stable AC filtering and suppresses incoming mains noise before conversion. |
| Common Mode Chokes | E-core chokes with small-gauge windings. |
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BenefitStable current handling and lower winding resistance for efficient current delivery. |
| Voltage Switching | Automatic relay switching via voltage sensing circuit. |
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BenefitFewer relay contacts in the AC input path reduce contact resistance and improve long-term reliability. |
| PCB And Build | Standard 1.6mm immersion-gold PCB. |
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BenefitBetter current handling, thermal spreading, oxidation resistance, and solderability. |





