yap u are rite, RM500 only can get cap ayam amp ...thanks for the advice...maybe i need to extand the budget to RM1000....i'm OK to mix around actually, it just that numerous seller brings kenwood brand and its within my earlier budget..

but the most important thing rite now is i need guide on how to find a suitable amplifier for my speaker .i dont wanna end-up blowing my speaker by choosing the wrong amp...what are the spec that i should consider before buying an amp...should i choose 1200watt over 350watt? should i choose 4 channel over 2 channel? ...

my objective is just wanna have better bass from my 6x9 rear and 6" front  2 way speakers, plus still would be able to control fader and balance from the HU ....

yap, been thingkin bout this copy Alpine V12 too...if i decide to get an active sub would it be good enough than compared to normal external amp+subs?

what's wrong with kenwood speaker? any recommendation to replace my rear 6x9 then? pioneer, JVC?

FIRST, in term of wattage, considering i have:

pair of 270watt (max) component,
pair of 300watt (max) 6x9,
should i get at least an amp with max 1200watt?
(my noob calculation is 2x270watt + 2x300watt=1140 round up to 1200)..

OR

pair of 45watt RMS component,
pair of 75watt rated power 6x9 (is this same like RMS?)
should i look for an amp with output power > 45watt per channel?

OR

all this RMS and max power does not make any sense when choosing an amp? u can simply put 10000watt amp( ) and hoping i wont blow the speaker ...

SECOND Impedance (OHM)..am i spelling it rite?
from what i understand is it's represent the power resistance..different speaker setup will give different combined impedance..how impedance play its role in setting up your amp?
THIRD, in term of channel (assuming i just wanna have one amp):

lets say i just wanna amplified the front component and rear 6x9, and maintain the control over fading & balance from HU,
how many amp channel should i look for? 2, 4, 5 or 10( ) channel amp?
OR
let say i wanna amplified the front component and a subs (6x9 rear direct from HU), and still maintain the control over fading & balance from HU, can 2 channel amp do the job?...

FOURTH, i notice my HU already have this bass boost function and then most amplifier also featured this function..so if i install an amp then,

is it safe to turn both bass boost features from HU and amp at the same time? wont it harm both of my speaker and amp?
OR
it doesnt matter by doing so and it will further amplified my bass.

maybe my questions doesnt make any sense or too basic too be asked or too technical and complicated to be answered (which i believe not ) but i apologize for my noobness or making anybody feel irritated with my question    

this are the answers that i'm looking for   ....thank you bro  

anyway, further noob question...
1) is bridge only meant for subs? bridge is by connecting positive/negative terminal of a speaker/subs to 2 different channel rite?
2) since my HU only have 1 Preout, so it's not possible for me to install more than one amp rite?

Thanks for the tips
and the more voltage for preout is better rite? now i know why >RM500 HU is worthwhile ....before this i thought expensive HU just have extra physical accessories such dimming light, USB & Ipod support, cool faceplate, blutooth which are not important to me
by using 2 channel amp, does it mean i only can connect either pair of front or rear speaker? OR
what if i connect both pair of my front/rear speaker to the amp in parallel mode? (parallel front left with rear left speaker and front right with rear right) from my understanding it will lower the combined impedence in each channel, i can control balance from HU but cant control fading rite? any other quality effects..
THD?? now this is another informative info for me...no wonder there's cheaper amp & damn expensive amp...another thing i notice, cheaper amp usually have low RMS power (30-40watt/channel) even though the peak is around 1+++watt .....

All these kind of technical info & spec really help bros. TQ
NEXT QUESTION

Technically what's the different between good speaker and bad speaker?...i've saw some component is priced up to RM800 while there's component also priced at just RM200....below are some of my understanding bout a good speaker, appreciate if somebody can verify...
- it's material (PP or fibre cone better, rubber rounded cone better) so it can last.
- it's magnet (heavier or bigger is better, strong magnet is better) but i dont understand what's the effect of strong/weak magnet.
- it's RMS that matter (higher RMS is better) i think i can understand this one.
- it's external crossover (for component) but bit blur on this
any other characteristic for a good speaker??