E-SERIES PROFESSIONAL IN-EAR MONITOR HEADPHONES ATH-E70 ATH-E50 ATH-E40 The ATH-E70 is the flagship in-ear monitor model in the E-Series. Its accuracy and detail allow precise balancing of the mix, making it the perfect choice for monitoring on stage or mixing in the studio. Offering extended frequency response and an accurate sound stage, this model is designed for sound professionals who demand the best.