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Desktop Portable Amp

headphone amplifier

Owner’s Manual

Toll Free: 

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Phone: 

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Fax: 

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2020 

Gilkerson 

Drive

Bozeman, 

MT 

59715

w w w . h e a d p h o n e . c o m

Congratulations on your new Desktop Portable Amp. The amp you hold in 

your hands is the latest in a thirteen year long quest to build the world’s fin-

est portable headphone amp. It’s equally comfortable in your big rig at home 

or on the tray table in front of you at 30,000 feet; it will take a signal from a 

$10,000 cd player or iPod, drive your high quality headphones with author-

ity, and coat the inside of your head with the vivid colors of your favorite mu-

sic.   Add the DAC option and you’ll be able to feed you amp from any source 

with either Toslink (optical) or coax digital output, or from a computer’s USB 

connection.  There aren’t many portables around these days that have digital 

outs, but most of today’s portable DVD players play CDs and have digital 

outs that operate under battery power.  You’ll be amazed at the quality of 

play by all the great musicians that show up in your head. And if you haven’t 

tried playing movies with WinDVD with Dolby Headphone plug-in on your 

laptop through a good digital amp,  and boy, are you in for a real treat.  Oh, 

and don’t forget to check out the Desktop Portable DVD Bag on our web site. 

It will conveniently carry the amp, battery pack, and portable DVD or other 

player of choice.

Содержание Desktop Portable Amp

Страница 1: ...f your head with the vivid colors of your favorite mu sic Add the DAC option and you ll be able to feed you amp from any source with either Toslink optical or coax digital output or from a computer s USB connection There aren t many portables around these days that have digital outs but most of today s portable DVD players play CDs and have digital outs that operate under battery power You ll be a...

Страница 2: ...ge is a blob on the left a blob on the right and a blob in the middle The HeadRoom cross feed provides the natural acoustic cross feed normally heard at the left and right ear as heard from the left and right speaker Adding back the normally occurring cross feed signal gives your brain enough information to build the stable and natural audio image needed to have a quality listening experience See ...

Страница 3: ...into this connector 3 Power Source Selector To the right is the power source switch which allows you to select battery power or external power to run your Desktop Por table Amp The amp will run on either four D cell batteries or an external power supply We offer two power supplies the less expensive version lovingly known as brick power supply comes with the amp the more expensive Desktop Power Su...

Страница 4: ...ion of including a DAC If you did not purchase the DAC option with your amp initially you can have this upgrade performed at a later date The Desktop DAC is a clean well balanced and natural sounding converter It uses the Cirrus Logic s flagship CS4398 24bit 192kHz 120dB dynamic range digital to analog converter Coupled with extensive power supply isolation and regulation this DAC will take virtual...

Страница 5: ...p amps for the internal input buffer crossfeed summer and power amp volt age gain stage The output current amplifier is our version of the highly regarded Dia mond Buffer discrete transistor design by Walt Jung Resistors are 1 metal thin film and caps in the signal chain are polyphenylenesulfide poly film these are MUCH higher quality parts than you d ever find in a typical consumer electronics product...

Страница 6: ...e refer servicing to HeadRoom factory authorized personnel as HeadRoom is the only authorized service center for HeadRoom products either in or out of warranty Tampering by persons other than Head Room factory authorized personnel is discouraged and will void your warranty HeadRoom will not accept warranty claims for damage resulting from accident misuse neglect abuse or failure to follow instruct...

Страница 7: ...ls anywhere in between can also be damaging the louder the sound the shorter the time required to cause permanent damage Just to drive this message home here s a bit of information about hearing damage The most common type of damage caused by prolonged or exces sively loud sound is called tinnitus It manifests itself as a sustained buzzing and or ringing in the ears and can become a permanent cond...

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