background image

 USB Modes (technical)

In order to deliver the absolute best performance and 

the ideal level of convenience with the widest variety of 

computers, your Little Ego supports two different USB audio 

modes - UAC1 and UAC2 (this is not the same as USB 1.0, 

USB 2.0, and USB 3.0). 
The Little Ego’s default operating mode is called USB Audio 

Class 2 (UAC2), which supports all standard bit depths and 

sample rates up to 32/384. The drivers needed to support 

UAC2 are built into all modern Apple computers, but not 

into Microsoft Windows, which is why you have to install our 

drivers to unleash the full potential of the Little Ego with a 

Windows computer. Some versions of Linux also support 

UAC2, but not all.
Since it isn’t always convenient to install drivers on a 

Windows computer, the Little Ego also gives you the option 

of running in USB Audio Class 1. Both Apple and Windows 

computers have support for UAC1 built in, as well as most 

versions of Linux, so you can use UAC1 on most computers 

without drivers. The only limitation is that UAC1 only 

supports bit depths and sample rates up to 24/96k.
The Little Ego’s UAC1 mode is engaged by holding down the 

Filter Select Switch button while connecting the Little Ego to 

the computer, and the USB Mode Indicator LED will light up 

red when the Little Ego is in UAC1 mode.

Summary of Contents for Little Ego

Page 1: ......

Page 2: ...connect the USB Input on your Little Ego to an available USB port on your computer and plug in your headphones If you have a Windows computer your Little Ego can play files up to 24 96 without install...

Page 3: ...ort an external USB sound card You ll be able to play anything through your Little Ego that you can play on your computer The high quality low impedance headphone output will drive all standard headph...

Page 4: ...the volume control on your computer to set the level the high quality volume control in your Little Ego won t mess up the sound quality at all If you connect your Little Ego to a device that has its...

Page 5: ...the Finder from the dock Select Applications Double click on Utilities Double click on Audio MIDI Setup Click on Emotiva Little Ego on the left to select it Click on the little gear on the bottom left...

Page 6: ...u only play files below 96k or you re using your Little Ego on a friend s machine your Little Ego has a special mode that supports up to 96k without having to install drivers To use this Driverless Mo...

Page 7: ...rol Panel To tell your Windows 8 1 computer to use Little Ego Connect your Little Ego to a USB port on your computer On your computer sweep in from the right edge of your touch screen or bump your mou...

Page 8: ...orrectly Apple Computers By default Apple computers always play audio files at a single preset sample rate If you want to play all high resolution audio files at full quality on an Apple computer you...

Page 9: ...l our drivers to unleash the full potential of the Little Ego with a Windows computer Some versions of Linux also support UAC2 but not all Since it isn t always convenient to install drivers on a Wind...

Page 10: ...ttle Ego will switch to the new filter and resume normal operation You will hear a slight period of silence when the filter switch occurs The Symmetrical filter F1 is a classical design which combines...

Page 11: ...of ringing is added to the signal While this ringing is not audible as a separate sound its presence can subtly alter the sound character of the output The first picture on the left shows what a theor...

Page 12: ...press the Filter Select Switch repeatedly to cycle through the available filters until the fourth LED is lit HP Headphone Blend Mode Within a few seconds after you stop pressing the button your Little...

Page 13: ...onvert that analog signal into digital audio we start with a clock that marks off equal amounts of time For each tick of our clock we measure the voltage of the signal and save it as a number The pict...

Page 14: ...surement which determines how accurately we can store each value is called the bit depth The bit depth used by standard CD audio is 16 bits which means 16 digits in binary The math there tells us that...

Page 15: ...ow exactly what your computer is sending to your Little Ego Lossless vs Lossy Compression Digital audio files take up a significant amount of storage space especially at higher sample rates and bit de...

Page 16: ...s The most common formats for high resolution audio at the moment are 24 96 and 24 192 with the files themselves being either uncompressed WAV files or in the lossless FLAC or ALAC formats High resolu...

Page 17: ...ximum Output Level 1 8 VRMS Sample Rates Supported Apple computers 44 1k 384k no drivers required Windows computers 44 1k 384k with free drivers Windows computers 44 1k 96k driverless Bit Depths Suppo...

Page 18: ...he way down Problem You re playing high resolution files but the Little Ego still shows a 44k sample rate Check for Your computer or player software is configured incorrectly If you have an Apple comp...

Page 19: ...o Emotiva digital audio products player software and other related topics It s a great place to read up on digital audio and interact with other digital audio fans All information contained in this ma...

Page 20: ...Emotiva Audio Corporation 135 Southeast Parkway Court Franklin TN 37064 www emotiva com...

Reviews: