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

The full balanced design based on Master 9
Class A PSUs built in
Discrete  Headphone amplifier / Preamplifier
Super Exponential Volume Characteristic
8000mW at 40 ohm output
OCC and hi-end parts applied 

Discrete  DAC+ Headphone amplifier / Preamplifier
Built in Sabre ES9038  Pro  
DSD , DXD,32bit / 384K  support from USB
A femtosecond TCXO built in

Discrete  DAC+ Headphone amplifier / Preamplifier
With XLR / RCA analog inputs
built in Sabre ES9038Pro
DSD , DXD 32bit / 384K Support From USB / HDMI
9500mW at 40 ohm ( per channels )
Built with OCC and Hi-end parts