The "NEF” line-up from Radius is the basic line up with a simple philosophy: good value for the money.
You start with the NEF11 with has a linear sound signature with the least bass, going up to the NEF21 which has a fuller body and a smooth midrange, to finally the NEF31 that has a strong bass, good detail, and wide soundstage.
The tuning for all three models are very good with a clean and low-distortion sound. You can consider them all as budget audiophile IEMs.
Radius HP-NEF21 Earphones
Double precision acoustic register structure
Adjust the sound quality by using the structure to reduce the vibration of the diaphragm driver unit and the Housing Department, higher realized.
Ringlesdayaframbonding driver
Eliminating the unnecessary parts from the driver unit and expand to maximize the effective area of the diaphragm. Provides a more powerful sound than the same diameter driver.
New deep mounted year pieces
Provides wearing comfort earpiece to fit in more at the back of the ear, unlike conventional deep mounted year piece of the new shape is stable and rich bass sound reproduction.
Adjustable port
Mounting position of the earpiece can be adjusted in two stages. Enhances the bass playing ability in a tight fit in my ear.
Specifications