User Manual

1
S50 Pro is a highend audio streaming preamplifier with network and Bluetooth aptX HD connectivity.
Applying S50 Pro to your current stereo system will enable you to stream music from your smart device,
USB, NAS or streaming services, such as Spotify,Tidal or Qobuz in high resolution by 4STREAM App,
AirPlay, Bluetooth or other third party compatible apps. Lots of Hi-Fi hardware components, such as
ESS9023 DAC, AKM ADC are implemented to make a great sound quality, Adding more units to your
home audio system can set up a wireless multiroom or multizone whole house audio system, it will give you
totally new and great experience to play and enjoy music.
1. Introduction
2. What's in the box
Main unit x1
Power adapter x1
User's Manual x1
Antenna(3dB) x2
2-2RCA cables x1
2-1RCA cables x1
Remote control x1
US B
AUX IN
BT
WI FI
BAS
d.bass
S+
BA
12 3
45 6
SS-
TREBLE +
TREBLE-
FLAT
OPTIN