STAX SRM-400S Electrostatic Headphone Amplifier don't recommend eartips 5mm connection for most portable

5mm connection for most portable audio devices

Frequency Response 20 Hz - 16 kHz Transducers High performance

natural mids

“A pair of noise-cancelling headphones that'll block out the rest of your household while you're trying to concentrate

Memory Foam Earpads

STAX SRM-400S Electrostatic Headphone Amplifier don't recommend eartips 5mm connection for most portableMiddle class semiconductor driver unit is renewed. New DC amplifier which FET are installed in all stages. STAX introduces a new semiconductor driver unit SRM 400S, the successor model of SRM 353X. STAX custom made low noise DUAL FET is installed on First Stage. And FET is also installed on Last Stage. The characteristics of right FET and left FET are measured strictly. Selected FET are installed as well as SRM 700S. SRM 400S succeeds to the design