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2020 Gilkerson Drive
Bozeman, MT 59715
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Portable Desktop Amp

headphone amplifier

Owner’s Manual

Congratulations on the arrival of your new Portable Desktop Amp. 

The slender and curvaceous amp you now hold in your hands is the 

most current result of a 15 year long quest to build the world’s finest 

portable headphone amplifier. 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 

an analog or digital input from a $10,000 cd player, laptop, or iPod, 
and drive your high quality headphones with authority and aplomb. 

It’s a little slice of your big rig you can take with you anywhere you 

roam; an Audiophile’s movable feast. And now it’s yours! Thank you, 

we’re so happy to help you get it right between your ears. 

Summary of Contents for Portable Desktop Amp

Page 1: ...st current result of a 15 year long quest to build the world s finest portable headphone amplifier 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 an analog or digital input from a 10 000 cd player laptop or iPod and drive your high quality headphones with authority and aplomb It s a little slice of your big rig you can take with yo...

Page 2: ...feed signal gives your brain enough information to build the stable and natural audio image needed to have a quality listening experience See pg 7 for more info on the HeadRoom crossfeed 5 Gain Switch The 3 position Gain Switch accomodates various head phones power needs For instance the Low Gain setting would be used for ear canal headphones allowing a larger range on the volume control pot Ex pe...

Page 3: ...ady to go You may listen to the amplifier while it s charg ing The battery on your Portable Desktop will last anywhere from 15 20 hours if you re using the DAC on your Portable Desktop the battery life will be lower versus using only the analog portion of your amp The lithium ion batteries in the Portable Desktop will last approximately 300 charges at which point you will need to send your amp bac...

Page 4: ...th HeadRoom The crossfeed switch in Head Room amplifiers allow you to cross feed a little of the left and right channels across to eacho ther through a short time delay The Digital Analog Convertor Far ear hears slight delay Near ear hears sound first 30 degrees off axis Portable Desktop DAC The Portable Desktop DAC is a clean well balanced and natural sounding converter It uses the Cirrus Logic s...

Page 5: ...l power source 5 VDC digital analog 15 VDC 5 VDC battery coaxial input source selector 1 8 input battery 15VDC power input s use one only ree 800 828 8184 outside U S 1 406 587 9466 optical input USB input optical USB digital input selector coaxial power source 5 VDC digital analog 15 VDC 5 VDC battery coaxial input source selector 1 8 input battery 15VDC power input L R parallel analog inputs use...

Page 6: ...imate Repairs are conducted only on Head Room products When we receive the equipment we will initiate repairs and upgrades within 1 2 weeks and return the unit to you You are responsible for shipping costs to and from HeadRoom for all non warranty repair items Equipment Exchanges If you would like to exchange your purchase for another item you have two options You can simply purchase the item you ...

Page 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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