Pro Ject S2 Uni Box Instruction Manual

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Pro Ject S2 Uni Box

Dear music lover,
thank you for purchasing a Pro-Ject Audio Systems streaming amplifier.
In order to achieve maximum performance and reliability you should study these instructions for use carefully.

Warning of a hazard for the user, the unit or possible misuse.
Important notice.

Safety instructions

AC outlet voltages vary from country to country. Before connecting to the mains, make sure that the voltage in your area meets the voltage requirements printed on the power supply.
The power supply is used to connect/disconnect the unit from the mains. Make sure that the power supply is easily accessible at all times. Never handle the device, the power supply while your hands are wet or damp. Avoid letting liquids enter the device or the power supply. Never place any item containing liquid, such as a flower vase on or near the device. Never spill any liquid on the device or the power supply. Never place any naked flame sources, such as lighted candles on or near the device. The product shall not be used in damp or wet locations, next to a bathtub, sink, swimming pool or any other similar conditions.

Connectors

Make all connections except the connection to the headphone whilst the unit is disconnected from the mains.
Never connect or disconnect power supply to or from the unit whilst the power supply is connected to the mains! Never use any other power supply than the one supplied with the unit with the exception of dedicated Power Boxes which can replace original power supplies.

Take care to connect the left and right channels of In 1, In 2, In 3 correctly. The right channel is usually marked red, the left channel black or white.
Speaker connections for the left speaker are located on the right hand side of the rear view. Speaker connectors marked red represent + according indicators on speaker terminal.

Analog output (Variable Output)
A power amplifier, active loudspeakers or an active subwoofer can be connected to the output sockets marked Variable Output.

Connection to the speakers
The output terminals accept speaker cables terminated with 4mm ø Banana plugs, spades connectors or naked wire.

Phono input
Connect the tonearm signal lead to the In 1 (Phono) of the amplifier. The earthing wire may be connected to the screw terminal if you encounter hum problems when using the turntable. The phono input is suitable for MM and High-Output MC cartridges.

Line inputs
Line level sources (CD player, radio or TV) can be connected to the inputs marked In 2 or In 3.

Digital inputs
Sources with a digital output such as TV satellite/cable receiver or a game console can be connected to the digital inputs. Optical to In 4 and In 5, Coaxial to In 6, HDMI to In 7.

Mains power connection
Connect the low voltage plug from the power supply to the Power socket before connecting the power supply to the mains.

Front panel controls

To switch on from standby or to standby
The push button on the left side of the front panel turns the unit on or back into standby. The blue LED above the stand-by push button shows that the unit is switched on. Mute is active when LED is blinking.

Input selector
Pressing the buttons ◄ and ► selects the desired input. The LEDs show which input is currently active.

Stream button
The Stream button in the lower right corner on the front panel can be used to pause/resume streaming. The Stream LED to the left of it shows the current streaming status:

Factory & WiFi Reset
Press and hold the Stream button for 10s, afterwards you will see the Stream LED flash red. Factory reset clears all streaming – source, volume, and network – settings and returns the streaming module back to the original factory settings.

Volume
Adjust the volume to the desired level, using the large knob on the front panel.

On the Stream input (In 8), the Uni Box S3 offers you two volume control stages. The physical fully analogue volume control with the knob on the front panel. And the digital volume control in the Pro-Ject Home App. We recommend to set the digital in App volume control to maximum and use the analogue volume control of the Uni Box S3 as your main volume control. Use the digital volume control only for fine tuning the level as necessary and for convenience reasons. This way you are getting the full digital resolution and use the lossless analogue volume control to maximise audio quality and your hifi stereo music listening.

Connecting a headphone
Connect the headphones to the ¼“ (6,3mm ø) jack socket on the front of the unit.

Streaming, WiFi & BT connection
Make sure the antenna is attached to its connector WiFi BT Antenna on the back panel prior to using.

Only use the supplied antenna!

Select In 8 on the Uni Box S3 and use the Pro-Ject Home App to choose your streaming service of choice.

The Uni Box S3 physical inputs can only be changed on its front panel or with the remote. The Pro-Ject Home App is only used to control the streaming service that is being played.

WiFi Setup

Download the Pro-Ject Home App (available for Android and iOS)
Power on the Uni Box S3 (make sure to connect the antenna before powering on the Uni Box S3)