Woo Audio, based in New York, builds a few power amplifiers, but lots of headphone amplifiers. In the current review, we take a look at the WA7d tubed headphone amplifier, with DAC, and solid state power supply.
OPPO has just released the HA-2 DAC and Headphone amplifier. It is sized to use with your smart phone's digital output using a USB-micro-to-USB-micro cable. With a Sabre Mobile DAC, the HA-2 will decode up to 32/384 PCM and DSD256 music stored on your phone (you will need a downloadable app).
The ALO Studio Six is a Class A single-ended triode circuit design with zero feedback. It delivers a warm and rich tone via its full vacuum tube amplification. It isn't cheap but it delivers a lot of quality tube power...
The AURALiC TAURUS MKII uses their proprietary ORFEO Classs-A output modules to deliver amazing sound to high-end headphones. Enjoy incredible transparency and tonal quality via either the standard or balanced output of the TAURUS MKII. Easily one of the best headphone amps on the market and a reference quality pairing with the HiFiMAN HE-6 planar magnetic headphones.
The Meridian Prime and its Prime Power Supply are a compact unit designed to fit on even the most cluttered of desks. Enjoy clean and neutral playback up to 192/24 bit PCM via USB connection. The Prime even has enough power built into it's mini stature to handle beefy planar magnetic headphones. At $2,000 for just the Prime, it is a bit pricey, but worth checking out if you need something small.
Schiit Audio is an irreverent company that builds high quality electronics for headphone listeners entirely made in the USA. The Asgard 2 and Bifrost are Schiit's most popular headphone amp and DAC, and they sound and look far more expensive than they are.
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!