Audio-Technica ATH-M40x Professional Monitor Headphones Serial Number:251509001164 the spring reverb circuit is

the spring reverb circuit is our richest sounding spring reverb design to date

Thanks to the same beefy transformers as the combo version

The 15 ¾'' fully hollow body of the AFC155 is capable of producing rich and complex tones and allows each and every note to resonate beautifully

Driver type: Info not available

Audio-Technica ATH-M40x Professional Monitor Headphones Serial Number:251509001164 the spring reverb circuit isThe M Series ATH M40x professional monitor headphones are tuned flat for incredibly accurate audio monitoring across an extended frequency range. Your studio experience is enhanced with superior sound isolation and swiveling earcups for convenient one ear monitoring. Engineered with pro grade materials and robust construction, the M40x excels in professional studio tracking and mixing, as well as DJ monitoring. More About the M Series Headphones