Behringer HA400 Micro Amp headphone distribution amp If you're tracking more than one musician at once, or if everyone in a group wants to listen to a playback, you need a monitor distribution system. The compact, flexible HA400 can power up to four pairs of headphones and up to four independent volumes. Altogether Now You can use this super-compact stereo headphone amplifier with practically any headphones—four of them at the same time, to be exact! Let up to 4 different people in your studio listen to the main mix while recording, and each listener can determine their own volume level using the dedicated output level controls. The HA400 contains 4 high-power stereo amplifiers that maintain the highest sonic quality even at maximum volume levels. Ultra low-noise 4580 operational amplifiers are included for outstanding audio performance—these are the same op amps found in “full-size” audio equipment—plus, a DC 12-Volt adapter is included.Great Sound, Great Value When a recording session calls for everyone's heads—and ears—to be in the game, the HA400 is a real lifesaver. Hearing is believing—check out the amazing HA400 at a BEHRINGER dealer near you. Ultra-compact headphone amplifier system for studio and stage applications4 independent stereo high-power amplifier sectionsHighest audio quality with virtually all types of headphones even at maximum volumePhones Level control per channelDC 12 V adapter includedHigh-quality components and exceptionally rugged construction ensure long lifeConceived and designed by BEHRINGER Germany* This product is covered by 1-year warranty, with extension to 3-year warranty upon registration of the product at behringer.com within 90 days of purchase.