RAL-KEB03 User's Guide Rev. 1.00 01/Feb./2016
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1. Introduction
Thank you for purchasing RAL-KEB03 portable USB_DAC. We are confident that you will
enjoy listening Hi-Res music at anywhere, outdoors and in home with your PC audio system,
Mac Book, iPhone, iPad, iPod, Android phones and WALKMAN. RAL-KEB03 receives
High-Resolution digital audio data stream through USB High Speed mini-B port. KEB03
accepts LPCM format up to 24bit/384kHz from 16bit/44.1kHz and DoP(DSD over PCM
Standard 1.1 compatible) format DSD digital music stream up to DSD11.2MHz. KEB03
passes the DSD stream to DSD Direct enabled DAC (ESS ES9018K2M) and creates clear
and natural sound. RAL-KEB03 is fully compatible with iOS USB Host mode Audio. The Host
mode enables Lightning Direct connection with Lightning to mini-B cable (*note 1), without
Apple Lightning USB Camera Adapter. The Host mode also enable to play back High-Res and
DSD native music with popular Music Player Applications, such as Audirvana Plus on MacOS
X, foobar2000 with foo_asio_dsd, JRiver Music Center , HQPlayer and JPLAY on Windows
PC,' music' AP and ONKYO HF Player on iOS devices, Android phones and tablets.
RAL-KEB03 also has Optical(Toslink) input port and accepts S/PDIF Digital Optical music
stream from Digital Audio Players or CD Players. It accepts 2ch. PCM 16bit/32, 44.1, 48, 88.2,
96, 176.4 and 192kHz, 24bit/32, 44.1, 48, 88.2, 96, 176.4 and 192kHz. ( * note 2 )
*note 1 : Must use bundled Lightning to mini-B cable or moon-audio Lightning to min-B cable.
KEB03 does not work properly with other cable.
*note 2: Signal quality of high sampling rate such as 96kHz or higher depends on Optical
cable quality. Must use high quality cable.
- "Made for iPod", "Made for iPhone" and "Made for iPad" mean that an electronic
accessory has been designed to connect specifically to iPod, iPhone, or iPad,
respectively, and has been certified by the developer to meet Apple performance
standards. Apple is not responsible for the operation of this device or its compliance
with safety and regulatory standards. Please note that the use of this accessory with
iPod, iPhone, or iPad may affect Wireless performance
- AirPlay, iPad, iPhone, iPod, iPod classic, iPod nano, iPod touch, and Retina are
trademarks of Apple inc., registered in the U.S. and other countries. iPad Air, iPad mini,
and Lightning are trademarks of Apple inc. The trademark "iPhone" is used with a
license from Aiphone K.K.
- "RAL" is a Registered Trade Mark of RATOC Systems, Inc. in Japan, USA and Taiwan.
- "ESS", "SABRE32" and "ES9018K2M" are trademarks of ESS TECHNOLOGY, Inc..
