The Mode EQ comes with an EQ switch on the remote allowing you to switch between two different EQ settings. Use the first EQ setting for warm, bass-heavy sounds. Use EQ II if you prefer your music to be brighter with an emphasis on the mids and highs.
Reach out to the Customer Support Team for assistance getting on spare sleeves for your Mode EQ headphones.
Yes, Mode EQ can be used for phone calls.