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Please note:
The
R2R 11 built in high biase current amps , for most headphones at normal listen
volume it is working at class A state
, so working long time will
become a little warm, there is better keep it have good are follow state
and don't cover other things on its top side .
The
R2R 11 must install the driver for Windows USB connect.
Mac OSX
, IOS , Linux and SPDIF without driver install necessary .
The discrete R2R ladders DA had a lot
parts, it need longer term burn in for get the best sound than other
DA chips.
The R2R 11 had not built in mute design for
avoid the sound quality degrade. Some SPDIF devices design the SPDIF
signal shut down while no music playing , and turn on the SPDIF
signal while the music playing, it may cause a pop noise output
while the source shut down or turn on the SPDIF signal. Computer
connect is without this issue.
How to set the R2R 11 DAC output
as variable or fixed level ?
The
R2R 11 has one group dedicated DAC output, In default
its output level setting is at variable mode only .
If users only want the fixed volume mode , change the jumper as
below picture . Then users can select between headphone , variable
output mode (DAC + Preamp ) and fixed output mode (Decent DAC ) .
(Be care, if the R2R 11 DAC output connect to a non volume
control external amp , don't turn to fixed output model , or setting to variable output
model only . The headphone output always
have volume control. )
Setting the R2R 11 with warmer sound flavor ?
Push
into two jumpers in the points can let the sound warmer for
match the bright headphone. (Please operate while the unit power
off, and pull off the power cable if you want to remove the top
cover board ).
The
R2R 11 Functions:
Front
plate:
Output switch: Select output between headphone
and DAC output ( Variable level) and DAC output ( Fixed level).
Gain switch: Select
gain between low gain (+0DB) and high gain
(+12DB).
Volume knob: Control
the volume level of the headphone and variable DAC output.
Input switch: Select
source between USB, coaxial and optical.
Rear:
Power socket: For power input
and power ON/OFF switch.
USB socket: For USB input.
Opt socket: For optical input.
Coax socket: For coaxial input.
DAC out sockets: For dedicated DAC output. DAC output ( Variable level) and DAC output ( Fixed level).
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Summarize