Fischer Amps In-Ear Earphones, built with high-quality, balanced armature speakers, deliver a clean and detailed sound. Due to the high efficiency of the earphone systems, the volume of your sound source can be turned to a lower level than before. A perfect listening experience with Fischer Amps earphones is possible when you make sure that you use them with high-quality audio sources and music material. Fischer Amps FA-earphones can be used with all audio sources which are suitable for headphones with low impedances and have a 3.5mm (1/8“) jack output

• State of the art driver design with 4 balanced armature drivers and three-way crossover, 2 back-vented low drivers, 1 mid and 1 mid/high  
• Small but solid earpiece of anodised aluminium
• Screwed on housing for easy service
• Kink-resistant aramid-reinforced cable to withstand a tensile load up to 800 N
• Can be used with ear-tips (included) 
• Audiophile and powerful sound with slight bass enhancement.  Perfect for professional in ear monitoring on stage or audiophiles.    
• Specifications:      
• Frequency response: 20 Hz - 18.5 kHz   
• Impedance: 19 ohms 
• Sensitivity @ .01 V: 119 dB