The Iron Triangle ATH-M40fs is a professional monitoring headset with a very flat and natural frequency response. The closed design is more suitable for professional monitoring and mixing DJs, providing a very friendly design for high sound quality. However, the 6.3mm plug design also shows that its design is mainly used for professional purposes. In fact, ordinary portable equipment can not make it play its due role. In terms of professional earphones, the batch of products sold by M40fs in China failed to provide a cost performance ratio that satisfied players. Therefore, overseas shopping is a good way.

Related parameters:

• 600mW power
• 60 ohm impedance
• 100dB sensitivity
• 6.3mm plug

At present, the price of this headset on Amazon is 54.99 dollars, about 335 yuan. For players who have just come into contact with earphones, it is a good choice to listen and feel the sound quality of monitoring earphones.