Those silent compressors are way beyond my budget (Mike got a Bambi at SGD 800+ shipped and a pre-owned Jun-air cost SGD 600). The solution then was to find a fridge compressor to replace the compressor on the Nardi.
I did come across 2 discarded refrigerators within the last few weeks; one at my work place and one at the bin center next to my block.
Today, I took the plunge. Terence has this contact selling the Amax brand air compressor at, I think, the lowest price in SG. Best of all, the shop is just down the corner from my work place. After getting the address from Terence, I went over to take a look, hoping that I can test the compressors out.
The shop uncle is a nice elderly man with great patience. He explained to me about the use of the 2 compressors he has in the shop and plugged them in to allow me to assess the noise level. I got excited with what I heard; much quieter than what I have with bigger tank. But what got me to jump in to bring one back is the price! The bigger of the 2 - 2.5HP with 24L tank, is almost SGD 100 cheaper than my Nardi! The sound level is given at "at most 58db", where my Nardi is at 73db. Capacity wise, it is almost 5 times bigger. From my search online, Horme is selling the same model at SGD 20 more and a shop at Kelantan Lane is selling it at SGD 90 more!
So, in less than 10 mins from entering the shop, I tow it back...