Oppo’s approach to true wireless earphones has always been a value-driven one, with the company actively promising and delivering more than you would expect from similarly-priced alternatives. The recently-launched Oppo Enco X2 is a great example of just how far Oppo is willing to go to position itself as the brand delivering the most bang for your buck. However, you can’t talk about the value-for-money proposition without taking on the truly…