Shure Srh240a

RTINGS says the SRH 240 is only mediocre for mixed use: it has acceptable sound for critical listening, but it is not very versatile. They also note sound leakage, weak noise isolation, and a cheap, creaky build that makes it a poor fit for commuting or sports.

DIY-Audio-Heaven characterizes the SRH-240A as a low-cost closed headphone with mediocre sound quality and poor comfort. Their measurements and notes suggest it is usable, but not especially strong in isolation, fit, or overall sonic performance.