Conclusion

The M4 are simply put a great headphone. I can't find one con to them from build quality to sound quality. The M4 simply are above average in every department. Some describe the M4 as a v-shaped sound, but I don't feel as if the mids are lacking in the least bit. Like the Beta's the M4 show excellent sound stage, maybe not in width but in perception and depth. Are the M4 going to wow anyone from the start? I don't think so. That doesn't mean they aren't fantastic though. What makes the M4 exceptional is the versatility they have. I can't find one genre I don't enjoy through these. I highly recommend these.