Setup guide

RAL-KEB02iP (USB_DAC Mode) User's Guide Rev 1.00 01/July/2014 3
1. Introduction
Thank you for purchasing RAL-KEB02iP portable USB_DAC. We are confident that
you will enjoy listening Hi-Reso music at anywhere, outdoors and in hime with your PC
audio system, Mac Book, iPhone, iPad, iPod and WALKMAN. RAL-KEB02iP receives
High-Resolution LPCM format up to 24bit/384kHz from 16bit/44.1kHz and DoP format
compatible DSD digital music stream. KEB02iP passes it to DSD Direct enabled DAC
(ESS ES9018K2M) and creates clear and natural sound without any conversion, and also,
RAL-KEB02iP is fully compatible with DoP(DSD over PCM) Standard 1.1 and works
with popular Music Players, such as Audirvana Plus on MacOS X, foobar2000 with
foo_asio_dsd, HQPlayer and JPLAY on Windows PC.
*1) USB Audio Class 2 Driver for Windows must be downloaded from our site below and
installed prior to use RAL-KEB02ip with Windows PC.
download from www.ratocaudiolab.com/download/driver.htm
*2)RAL-KEB02iP has two operation mode, iPod Compatible mode and USB_DAC
Compatible mode. These two modes are switchable with slide switch at the front panel
before turning on Power Switch. Refer
iPod Compatible Mode User's Guide to use
KEB03iP with iPod/iPhone/iPad.
1-1.Features
USB_DAC mode
●Fully compatible with USB 2.0 (HS 480Mbps) Specifications.
●Fully compatible with USB Audio Class 2.0 Driver.
●Accepts DoP Standard 1.1 compliant DSD 5.6448/2.8224MHz data and
L-PCM 24bit/16bit
384kHz/352.8kHz/192kHz/176.4kHz/96kHz/88.2kHz/48kHz/44.1kHz (2ch).
●Includes ESS SABRE32™ ES9018K2M Audio file class DAC.
●Fully balanced circuit and balanced earphone output.
●Earphone level switch (High <-> Low).
●Digital Filter Curve selection switch ( Slow <-> Fast)
●Includes reliable 3.7V/1200mAh Li-Polymer Battery(made in Japan).
●Quick Charging time (2hr) and 5.5hr operating time.