HeadRoom The Total Bithead Headphone Amp - Used

Description

Used but in excellent condition. Includes cables, instructions. Velcro feet have been installed on bottom of unit; extra velcro adhesive feet NOT INCLUDED.
Smooth USB-Powered Sound On the Go
Dramatically improve headphone listening on your laptop or PC with
HeadRoom
's classic USB mobile headphone amp. Combining the best features of the Total AirHead with USB input, the
Total BitHead
delivers greatly improved bass control and impact, a well-defined mid-range, and more articulate high frequencies. Just plug the
Total BitHead
into the USB port of any computer, and digital audio is automatically routed out of your noisy computer and into the superior digital-to-analog converter of the
Total BitHead
. The
Total BitHead
can be USB-powered or driven by 4 AAA batteries, includes
HeadRoom
's brilliant
Crossfeed
for excellent headphone imaging, and a 2-position gain switch to precisely match your headphone efficiency. The
Total BitHead
can also be used as a standalone headphone amp with your portable player, home audio component or any other audio source.
What is HeadRoom Crossfeed?
Imagine you are listening to a pair of speakers. If you turn off the left speaker, both ears hear the sound from the right speaker. But because the left ear is slight farther away than the right ear, it hears the speaker’s sound slightly after the right ear (about 300 micro seconds). This time difference is called the "inter-aural time difference" and it is the main thing your brain listens for in order to tell where to place sound left-to-right in your perceived stereo field.
However, with the left channel turned off in a pair of headphones, only the right ear hears the sound. If there is any sound that is only in the left channel, or only in the right channel, then only that ear hears the sound. This is not natural, and your brain becomes fatigued trying to figure out where sound is coming from when only one ear is hearing it. This tends to create an audio image that is a blob on the left, blob on the right and a blob in the middle.
HeadRoom
amplifiers cure the problem by allowing you to mix a little of the left and right channels across to each other through a short time delay using the "Crossfeed" switch. The usefulness of the circuit varies depending on what type of recording you are listening to; mono and binaural recordings need no processor at all. Old studio recordings that have instruments panned hard left or right benefit greatly from the processor. Live and classical recordings miked from a distance benefit somewhat less, and can often be listened to quite comfortably without the processor.
Features
:
Dual 1/8” headphone jacks to accommodate more than one listener
Improves headphone imaging with HeadRoom’s famous Crossfeed switch
Gain switch optimizes amplifier gain for headphones of different efficiencies
Clipping light indicator
On/off switch allows amp to be powered from batteries or from computer
Mini USB connects to any computer, no software required
Runs 20-40 hours on four AAA batteries or powered directly from computer
Designed and assembled in Bozeman, MT, USA
CD quality playback: 16bit-44Khz