1. Introduction
The Pro-Ject MaiA S3 is a compact stereo integrated amplifier designed to deliver high-quality audio from a variety of sources. It features multiple analog and digital inputs, including a Moving Magnet (MM) phono preamplifier, a Digital-to-Analog Converter (DAC), and Bluetooth 5.0 with aptX HD for high-resolution wireless streaming. This manual provides essential information for the proper setup, operation, and maintenance of your MaiA S3 amplifier.
Please read this manual carefully before using the device to ensure safe operation and to achieve the best possible performance.
2. Safety Instructions
- Always connect the power adapter to the unit last, after all other connections have been made.
- Ensure the unit is placed on a stable, level surface to prevent accidental falls.
- Do not expose the unit to rain, moisture, or excessive heat sources.
- Avoid placing objects on top of the unit that could obstruct ventilation.
- Disconnect the power adapter from the wall outlet during lightning storms or when unused for long periods.
- Refer all servicing to qualified service personnel. Do not attempt to open or repair the unit yourself.
3. Package Contents
Carefully unpack all items from the packaging. Please ensure the following components are included:
- Pro-Ject MaiA S3 Integrated Amplifier
- Power Supply Unit
- Bluetooth Antenna
- Remote Control
- User Manual (this document)
If any items are missing or damaged, please contact your dealer immediately.
4. Overview
4.1 Front Panel
The front panel provides access to essential controls and indicators for the MaiA S3 amplifier.
Image: Front view of the Pro-Ject MaiA S3 amplifier, showing the power button, headphone jack, volume knob, and input selection buttons with LED indicators.
- Power Button: Turns the unit on or off.
- Headphone Output: 6.3mm jack for connecting headphones.
- Volume Knob: Adjusts the output volume.
- Input Selectors: Buttons to cycle through available inputs (Phono, Line 1-4, Digital 5-7, Bluetooth). Corresponding LEDs indicate the active input.
4.2 Rear Panel
The rear panel houses all input and output connections for the MaiA S3 amplifier.
Image: Rear view of the Pro-Ject MaiA S3 amplifier, displaying various input and output ports including Phono, Line In, Digital S/PDIF, Bluetooth antenna connector, Analog Output, Speaker Terminals, and Power input.
- Phono Input (In 1): RCA inputs for connecting a turntable with a Moving Magnet (MM) cartridge. Includes a ground screw.
- Line Inputs (In 2, 3, 4): RCA inputs for connecting analog sources like CD players, tuners, or tape decks.
- Digital Inputs (In 5, 6, 7): Two optical (TOSLINK) and one coaxial (S/PDIF) input for digital audio sources.
- Bluetooth Antenna Connector (In 8 BT): For attaching the supplied Bluetooth antenna.
- Analog Output: Variable RCA output for connecting a subwoofer or another amplifier.
- Speaker Terminals (R, L): Binding posts for connecting passive loudspeakers.
- Power Input (20V DC): For connecting the external power supply unit.
5. Setup
5.1 Placement
Place the MaiA S3 on a stable, non-resonant surface away from direct sunlight, heat sources, and moisture. Ensure adequate ventilation around the unit.
Image: The Pro-Ject MaiA S3 amplifier positioned on a shelf next to a turntable and another audio component, illustrating a typical home audio setup.
5.2 Connecting Speakers
Connect your passive loudspeakers to the speaker terminals on the rear panel. Ensure correct polarity: connect the red (+) terminal on the amplifier to the red (+) terminal on the speaker, and the black (-) terminal on the amplifier to the black (-) terminal on the speaker. Use high-quality speaker cables for optimal sound.
5.3 Connecting Sources
- Turntable (Phono In 1): Connect your turntable's RCA cables to the Phono input. If your turntable has a ground wire, connect it to the ground screw next to the Phono inputs.
- Analog Devices (Line In 2-4): Connect CD players, tuners, or other analog audio sources using RCA cables to any of the Line inputs.
- Digital Devices (In 5-7): Connect digital audio sources like TVs, game consoles, or media streamers using optical (TOSLINK) or coaxial (S/PDIF) cables to the corresponding digital inputs.
- Bluetooth Antenna: Screw the supplied Bluetooth antenna onto the designated connector on the rear panel.
5.4 Connecting a Subwoofer (Optional)
If you wish to add a subwoofer, connect its line-level input to the MaiA S3's Analog Output using an RCA cable. The output is variable, meaning its volume will adjust with the main volume control.
5.5 Power Connection
Once all audio connections are made, connect the power supply unit to the 20V DC input on the rear panel of the MaiA S3, then plug the power supply into a wall outlet.
6. Operating Instructions
6.1 Powering On/Off
Press the power button on the front panel to turn the unit on or off. The active input LED will illuminate when the unit is on.
6.2 Input Selection
Use the input selector buttons on the front panel or the remote control to cycle through the available audio sources. The corresponding LED will indicate the currently selected input.
6.3 Volume Control
Rotate the volume knob on the front panel clockwise to increase volume and counter-clockwise to decrease it. Volume can also be adjusted using the remote control.
6.4 Bluetooth Pairing
- Select the Bluetooth input (In 8 BT) on the MaiA S3. The Bluetooth LED will flash, indicating it is in pairing mode.
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "Pro-Ject MaiA S3" from the list of found devices.
- Once paired, the Bluetooth LED on the MaiA S3 will glow steadily. You can now stream audio wirelessly.
6.5 Headphone Usage
Plug your headphones into the 6.3mm headphone jack on the front panel. When headphones are connected, the speaker outputs will be muted automatically.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Do not use liquid cleaners or solvents, as they may damage the finish.
- Ventilation: Ensure that the ventilation slots are not blocked by dust or debris. Periodically clean them with a soft brush or compressed air.
- Cable Connections: Periodically check all cable connections to ensure they are secure. Loose connections can lead to poor sound quality.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from speakers/headphones | Unit not powered on; incorrect input selected; volume too low; speaker/headphone cables loose or disconnected. | Ensure unit is on; select correct input; increase volume; check all cable connections. |
| Distorted or poor sound quality | Loose connections; incorrect source settings; damaged cables; source device issue. | Check all cable connections; verify source device output settings; try different cables; test with another source. |
| Bluetooth not pairing | MaiA S3 not in pairing mode; device too far; interference; device already paired to another unit. | Ensure Bluetooth input is selected and LED is flashing; move device closer; restart both devices; unpair from other devices. |
| Humming or buzzing noise | Ground loop (especially with turntable); interference from other electronics; faulty cable. | Ensure turntable ground wire is connected; move unit away from other electronics; try different cables. |
9. Specifications
- Brand: Pro-Ject
- Model Number: 9120097828989
- Number of Channels: 2
- Interface Type: Coaxial, Optical, RCA, Bluetooth
- Phono Input: Moving Magnet (MM) compatible
- Bluetooth: Version 5.0 with aptX HD
- Item Weight: 4.12 pounds (1.87 kg)
- Package Dimensions: 13 x 10 x 5 inches (33 x 25.4 x 12.7 cm)
- Manufacturer: Pro-Ject Audio Systems
10. Warranty and Support
Pro-Ject products are manufactured to the highest standards and undergo strict quality control. This product is covered by a manufacturer's warranty, the terms of which may vary by region. Please retain your proof of purchase for any warranty claims.
For technical support, service, or further information, please contact your authorized Pro-Ject dealer or visit the official Pro-Ject Audio Systems website. Do not attempt to service the unit yourself, as this may void your warranty.
