As mentioned on Erzetich Audio website, this headphone amplifier is great for studio as well as listening to music. This mini headphone amplifier is mini only in its size. Sound is powerful enough to drive my range of studio headphones and detail is amazing. I've had about four headphone amplifiers previously, ranging from 120 to 500 USD, but this one just fits me right - it is portable (since I work sometimes outside the studio for recordings), small and delivers what it promises.   The sound is precise and has a good power reserve. The...