As for most electronic equipment (PC/TV/Power Amp) it already has a internal regulator circuit which is neccessary to provide a stabilised voltage for every section of circuit. So I think a special external regulator is not neccesary.

Suggestion:

Due to voltage flactuation, variation, noise and transient supply from TNB, it better to used the existing UPS. Such as PK Electronics or APC that will provide more than enough to fillup up your requirement. Not only U.P.S but it has voltage stabilizer and conditioner circuit. I've been using it for my media centre and Audio System more than a year.

The UPS will protect you from:

1. Noise, Transient and Surge.
2. A Voltage stabilizer.
3. A temporary power supply in the event of TNB fail to supply. (have a enough time to shut down system)
4. A power conditioner which harmionized the electrical system and feed to your equipments.

A 2Kva (Approx 1600 watt) will sufficient to power up your existing equipment. One Power Amp (300W) + 42" LCD (250W) + media player. The cost for 2Kva is about RM1300, More Kva is mean more fund to invest...


Sample of Power Amp. internal block diagram.


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