The word "motorcycle" comes from the English word "Modify", which refers to improving some weak links and design defects of products to obtain higher performance with less investment. PC audiophiles generally have three ways of thinking when riding motorcycles in their spare time, namely, method of substitution, subtraction and addition.

The so-called substitution means that when designing and producing products, manufacturers often use some cheap but low-quality raw materials, which makes the performance of products unable to give full play, or manufacturers deliberately use cheap and low-quality components to open product grades in order to divide product grades. Therefore, for audiophiles who have certain hands-on ability, only by replacing some high-performance components at a low cost or simply improving some designs can the performance of products be improved, so as to obtain better performance and cost performance. From the difficulty of operation, replacement is the simplest and feasible method for motorcycle riding in amateur conditions.

The so-called subtraction means that in order to meet the market demand, manufacturers often add a lot of flashy functions or designs to their products, which is correct and necessary for the sales of manufacturers, because users who don't understand the products often account for more than 95%, or even 99%. For enthusiasts who pursue the essence, removing those flashy functions or designs can often further improve the performance of products and make them return to rationality. This is subtraction. In terms of operation difficulty, subtraction is higher than replacement, and its difficulty lies not in the process of disassembly, but in finding out the part that really needs to be cut.

The so-called addition means that manufacturers often use some simplified designs to control costs, which makes the performance of products unable to give full play. Audio enthusiasts can add some circuit components according to product characteristics, such as precision regulated power supply, to achieve the purpose of improving product performance. For amateur motorcycles, the realization of addition is the most difficult, which requires not only enthusiasts with strong theoretical knowledge, but also certain hardware conditions, such as special testing instruments and high-quality heating elements. For enthusiasts who are new to motorcycles, they can start with substitution and subtraction, and then use additive motorcycles after they have some experience. In short, in the initial stage, it is the key to learn to correctly analyze products and find out their weaknesses and defects.