Founded by American Grammy Award-winning singer Ludacris, SOUL is quite famous in the foreign headphone circle, but few people know about it in China due to insufficient publicity. SOUL's product quality is very solid, and its Run Free Pro sports earphones received a high score of 71 points in the US Consumer Reports, which is tied for second among all wireless sports earphones.
 
Run Free Pro supports aptX Bluetooth encoding, the sound quality is more focused on the low-frequency part, the feeling of the movement is very strong, the mid-frequency is slightly thinner, and there is a grainy feeling, which is more suitable for DJ and rock genres. In addition, Run Free Pro can play music continuously for 8 hours, has excellent battery life, and supports IPX4 waterproofing. Although it doesn't have earhooks and shark fins, it has a replaceable earlock system that makes it difficult to shake off your head violently, but 17g isn't too light. At present, there is no official purchase channel for Run Free Pro in China, and if you want to buy, you can only seek to buy on behalf of you, and the price is about 900 yuan.
 
Replacing the Run Free Pro as the main product is the Run Free Pro Bio, which supports aptX Bluetooth encoding and replaceable earlock system like the former. The main difference between the two is that Run Free Pro Bio focuses on the concept of "artificial intelligence", adding a mobile app to record and analyze the user's exercise data, and real-time voice guidance to help users improve their sports performance. In other aspects, Run Free Pro Bio adds reflective headphone cables and safety LED lights, weighs 20g, and the battery life is increased to 11 hours, but it only supports life waterproof, and the price is 1299 yuan.
 
The split bluetooth headset that has gradually become popular, SOUL has also expanded it into its own product line, and the flagship model is X-SHOCK. In terms of sound quality, X-SHOCK continues the characteristics of its own headphones, with sufficient low-frequency performance, but because it does not support Bluetooth encoding such as aptX and AAC, it is still not advisable to have too high expectations. The Bluetooth version of X-SHOCK is 5.0, the waterproof level reaches IPX5, the single battery life is not long, only 3.4 hours, and the price is 1299 yuan, which is not very competitive compared with similar products.