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R-27  (2021 Version)
Built in real balanced pure class A headamp & preamp
Pure class A power 9000mW@40ohm
Dual gain modes can drive high/low sensitivity headphones

8 group fully discrete R-2R DA modules to combine into real balanced push/pull decoders.

4 group fully discrete real balanced DSD native decoders.

Fully discrete real balanced  current transmition design.

2 pc ultra high frequency 90/98 MHz Accusilicon 318B femtosecond clocks provide synchronous clock for whole unit without PLL up-frequency .

32bit / PCM384K /DSD512 asynchronous transfer Amanero 384 apply the FPGA synchronous clock.

Both USB / HDMI have built in separate isolator and isolate power supply.

The whole digital circuit built with 1 pc FPGA and 5 pc CPLD programmable chipsets to separate the different configured circuits for avoid interrupt, data process in parallel mode.

Support firmware update to improve on sound quality.

All digital process mode settings accessible by buttons on front  (No need  to open the chassis)
Firmware update port accessible on rear (Update  firmware n
o need  to open the chassis).



Please note: The product improve cause the inside or outside change without inform .

Summarize Use Manual Specs Custom Option Shipping Cost

Specifications tested by OS8 mode and already through sound tuned, we always improve for better real like , musical and analog sound ,
improvement may result in changes in specifications and
design without notice.
S/N Ratio



L mode : +12DB

H mode : +22DB

Volume characteristic

Channels imbalance
< 0.05DB
Frequency Breadth (Whole unit)
20Hz - 20KHz  (< - 0.25DB)
 Output Level
Preamp Variable output : 19V RMS (balance)

DAC Fixed output : 5 V  (XLR) /2.5V ( RCA)
Headphone amp Output Power
 (Balanced , Pure Class A ,each channel )

40 ohm: 9000MW
100 ohm: 3800MW
300 ohm: 1250MW

Headphone amp Output Power
 (Single-ended , Pure Class A, each channel  )
40 ohm: 2500MW

100 ohm: 1050MW

300 ohm: 350MW
Input Sensitivity
0.5 Vp-p(75 Ohms, Coaxial)

19 dBm (Optical)

Input impedance

XLR : 94K ohm

RCA : 47K ohm
Support Operate Systems (USB)
Windows, OSX, Linux, ISO
Support Sampling  
USB & IIS : 44.1kHz - 384kHz /32Bit DSD64-512

 Coaxial mode: 44.1kHz - 192kHz

Optical mode: 44.1kHz - 96kHz
Power Requirement
1 Version  100-120V  AC 50/60 Hz

2 Version  220-240V  AC 50/60 Hz
Power Consumption
Package Weight
Approximately 15KG

W430 X L430 X H85 (MM, Fully aluminium ) 
AC power cord  X1
USB cable  X1
Mini remote  X1 (Standard edition)




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