Since headphones have become so popular, it seems only natural that dedicated headphone amplifiers would follow. Many have come to market, and the OPPO HA-1 headphone amplifier has just been introduced. It has numerous digital and analog inputs, and the output stage operates in Pure Class A. It also can handle digital audio in the new ultra-high resolution formats, e.g., 24/352.8 PCM and DSD128. A dynamite product from a dynamite company, the HA-1 is a champion in the ring!