I bought this 2-3 months ago. 1500 pesos from PC Options. Its comfortable and the sound quality is good but I got a lemon. Its because the sound of the Right earpiece cuts out. I have to jiggle the volume dial to get sound. Over time, its more and more difficult to jiggle the dial so I decided to bypass the volume knob. Fortunately the wires were color coded and the circuit board is labeled (R, L and G for right, left and ground). I first tested by temporarily shorting the R channel with a piece of wire. I eventually decided to short both L and R to get even sound volume.
After everything, I epoxied the wire stress relievers to the lower casing and taped the upper casing closed.