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 performancethese are the same op amps found in "full-size" audio equipmentplus, a 12-Volt AC adapter is included.
* -channel stereo headphone amplifier for use with all types of headphones
* Four high-power stereo amplifiers
* Highest sonic quality even at maximum volume
* Output level control for each channel
* Ultra low-noise 4580 operational amplifiers for outstanding audio performance
* 12-Volt AC adapter included
* High-quality components and exceptionally rugged construction ensure long life