edwin, assuming na gagamitin ko ang b&w ko, anong amp ang masuggest mo na less than 20k? tnx
High end amplifiers (including speakers, cd players, etc) normally pagtumunog, labas lahat ang clarity or which is ever in the recording without sounding either irritating or bland, ika nga may refinement. Ang mga low end to some mid-end amps either labas ang kalansing pero matalas or irritating over time o kaya naman play safe at roll-off ang sound para itago ang gaspang ng tunog.
A good amp or a system as a whole should be able to play on low volume and you could still hear all the musical information and be emotionally involved and the more you increase the volume, the more you like what you hear.
This is very hard to accomplish if you have a beginner's system. Audio is a learning process and as you keep on listening to different set-ups, the more your standard will get going higher.
Low end equipment was designed in the first place on a very limited budget that although the design could be good, they normally used cheap components to cut cost.
So my advice, with your budget of Php20K, a used Rotel, NAD, Cambridge Audio, etc could be good enough but please, get somebody to tweak or upgrade the parts. You will be amazed that even these amps could sound very good once upgraded and could fight with a lot more expensive equipments. This is the beginning where you will hear things that you previously wasn't able to hear in the recording.
edwin