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R2R 11  (2019 Version)
Single Ended Discrete Ladder Headphone amp / DAC (DSD native / DXD / PCM)

NOS design with 
R-2R resistor ladders DAC+Headamp
Built in 2 groups DA-8 R-2R modules

Unique noise reject technology remove the artifacts
DSD , DXD support from USB 
Amanero Combo 384 USB interface

All parts soldering with silver tin All resistors are the KOA / Vishay, no upgrade options


Summarize Use Manual Specs Shipping Cost

Improvement may result in changes in specifications and
design without notice.
S/N Ratio


 Output Level

 Headphone output : 10V RMS 
Variable output : 5V Max
Fixed output: 2.5V RMS (High gain)
Fixed output: 1V RMS (Low gain)

Output power
(Only for headphone.)

3500mW/25 ohm

1800mW/50 ohm

900mW/100 ohm

300mW/300 ohm

150mW/600 ohm

Output impedance

2 ohm /  Headphone output
2 ohm / DAC output

Input Sensitivity

0.5 Vp-p(75 Ohms, Coaxial)
19 dBm (Optical)
The TV and game box may had not enough level for SPDIF inputs.

Support Operate Systems (USB)

Windows, Mac,IOS,Linux

Support Sampling   USB PCM model: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz , 192kHz, 352.8kHz,384kHz
USB DSD native mode: DSD64 , DSD128, DSD 256 .
 Coaxial model: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 192kHz
Optical model: 44.1kHz, 48kHz, 88.2kHz, 96kHz
Frequency Breadth

20Hz - 20KHz

Power Requirement
220-240V OR 100-120ZV  AC 50/60 Hz
Power Consumption
Package Weight

W180 X L220 X H55(MM, Fully aluminium,with feet ) 
AC power cord            X1
USB cable                X1



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