Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not recommended.

I have always been a loyal Sennheiser fan. Having owned several headphones from them, I expected the continuation of high quality sound without having to spend thousands of dollars. However, the PMX-60 does not fit the bill. The Bass is very weak even when amped. Treble is too high and I find myself constantly adjusting EQ settings to make it sound "right". (Anyone knows a good headphone does not require any adjustments). The neckband can be uncomfortable due to hard plastics without any insulating material.Overall, I find the sound quality to be poor and not up to standard. Even though these headphones weren't expensive, I wouldn't recommend it. Spend a bit more and get the PX-100s, you won't be disappointed.