Geshelli Labs J3 PRO Quick Start Manual

Please read this guide before opera ng your device. Keep this
documenta on, as it contains warnings, terms and condi ons
important to the opera on of your device. Use of this device accepts
responsibility to the warnings, terms and condi ons.
IMPORTANT: Use only the supplied power source for the JNOG
Headphone DAC. UsingÊaÊdifferentÊpowerÊsourceÊcouldÊcauseÊdamageÊ
toÊtheÊproductÊdueÊtoÊvaria onsÊinÊvoltage,Êquality,Êcer fica onÊ
levelsÊandÊvoidÊtheÊwarranty.
IMPORTANTÊ:ÊPlease read this guide before opera ng your device.
This documenta on should be kept for future reference, as it contains
warnings, terms and condi ons important to the opera on of your
device. Use of this device accepts those warnings, terms and
condi ons.
ReferÊtoÊourÊwebsiteÊforÊaddi onalÊinforma onÊonÊourÊproducts.Ê
PleaseÊcontactÊusÊwithÊanyÊques onsÊorÊaddi onalÊinforma onÊ
regardingÊtheÊwarranty,Êdirec ons,ÊwarningsÊorÊforÊaddi onalÊ
productÊinforma on.
SETTINGÊTHEÊDACÊOUTPUTÊVOLUME
The JNOG DAC supports three volume levels. Full, Medium and Low.
To change the volume you must press the currently ac ve input port.
For example, if you are using the "Toslink A" port, and the LED ring is
currently lit up, then you must HOLD the bu on down for 2-3 seconds
and the volume will change to the next output level.
If ToslinkÊA is ac ve, then press and
hold for volume change.
The volume can be changed using any of the input selec on
bu ons as long as it is currently ac ve.
FACEÊPLATEÊLAYOUT
POWER Power On / LED Control
Switch
TOSLINK A/B Toslink A (FRONT PANEL)
COAX A/B Toslink B (REAR PANEL)
*USB Coax A (FRONT PANEL)
Coax B (REAR PANEL)
*USB (REAR PANEL) - Op onal
USB IN USB Input - Op onal
Toslink/Coax B Rear Coax, Toslink Inputs
RCA RCA Outputs
XLR R/L XLR Right and Le Outputs
12V DC 12V DC Power Input
Specifica ons
Input Connectors 2 Toslink, 2 Coax, 1 USB
Input Rates 32kHz, 44.1kHz, 48kHz, 88.2kHz,
96kHz, 176.4kHz, 192kHz,
*352kHz, *384kHz
*DSD64, *DSD128, *DSD256,
Input Format Up to 24bit / Stereo
Up to 32bit / Stereo
Compa bility AES3, IEC660958. SPDIF, EIAJ
CP1201
DAC AK4491+AK4499EXEQ
Output Unbalanced RCA, Balanced XLR (L/
R)
Frequency Response 20-20,000HZ
*Specifica ons may vary slightly per device base on manu-
facturing tolerance and component availability. We strive to
make each device as close to specifica ons as possible to
keep a consistent listening experience.
POWERINGÊONÊTHEÊDEVICE
Plug the included power adapter into the jack marked 12V DC. You will
no ce the power light (top le LED) is now illuminated indica ng the
device is ready to use.
To power off the device, press and hold the power bu on [PWR] un l the
power indicator turns off.
CHANGINGÊINTERNALÊLEDÊCOLORS
To change the LED colors , (device must be on) quickly tap the power
bu on [POWER] to switch between led colors.
SPDIF/USBÊ(OPTIONAL)ÊINPUTS
Insert a standard TOSLINK/Coax Cable into the "Toslink/Coax" and/or a USB
cable (for USB models) into the "USB" port. Both of which are labeled on the
front and rear faceplates of the DAC.
ANALOGÊOUTPUTS
For output use standard RCA (unbalanced) and/or XLR (balanced) cables.
The outputs operate simultaneously, you can run both XLR and RCA at the
same time.