1. Introduction
The MANAYO PM5BT is a phono preamplifier designed to connect a turntable to an audio system. It features a built-in Bluetooth 5.3 transmitter for wireless audio streaming, a Phono/Line mode switch for compatibility with various turntables, and adjustable Bass, Treble, and Volume controls. This manual provides instructions for proper setup, operation, and maintenance of your PM5BT preamplifier.
2. Package Contents
- MANAYO PM5BT Phono Preamplifier
- 12V/1A Power Adapter (100-240V)
- Bluetooth Antenna
- User Manual
3. Product Overview
3.1 Front Panel Controls

The front panel features rotary knobs for Bass, Treble, and Master Volume adjustments, a 3.5mm headphone output jack, and a three-position power switch (ON/BT, ON, OFF).
- Bass Control: Adjusts low-frequency audio output.
- Treble Control: Adjusts high-frequency audio output.
- Volume Control: Adjusts the overall output volume.
- Headphone Jack (3.5mm): Connects to headphones for private listening.
- Power Switch: Toggles between OFF, ON (wired output), and ON/BT (Bluetooth transmission).
3.2 Rear Panel Connections

The rear panel includes the DC 12V 1A power input, a port for the Bluetooth antenna, RCA L/R output jacks for connecting to an amplifier or powered speakers, a ground terminal for turntables, RCA L/R input jacks for the turntable, and a slide switch to select between Phono and Line input modes.
- DC 12V 1A Input: Connects to the provided power adapter.
- ANT (Bluetooth Antenna Port): Connects the included Bluetooth antenna.
- OUTPUT (RCA L/R): Connects to an amplifier, receiver, or powered speakers.
- Ground Terminal: Connects the ground wire from your turntable to reduce hum.
- INPUT (RCA L/R): Connects to the RCA output of your turntable.
- PHONO/LINE Switch: Selects the input mode based on your turntable's output type.
4. Setup Instructions
Follow these steps to set up your MANAYO PM5BT Phono Preamplifier:
- Placement: Place the PM5BT on a stable, flat surface near your turntable and audio system. Ensure adequate ventilation.
- Connect Bluetooth Antenna: Screw the included Bluetooth antenna into the 'ANT' port on the rear panel.
- Connect Turntable to PM5BT:
- Connect the RCA cables from your turntable's output to the 'INPUT' RCA jacks (L/R) on the rear of the PM5BT.
- If your turntable has a ground wire, connect it to the ground terminal on the PM5BT.
- Set the PHONO/LINE switch on the rear panel:
- Select 'PHONO' if your turntable does not have a built-in preamplifier (for MM cartridges, applies +36dB gain).
- Select 'LINE' if your turntable does have a built-in preamplifier (applies +4dB gain).
- Connect PM5BT to Audio System: Connect RCA cables from the 'OUTPUT' RCA jacks (L/R) on the rear of the PM5BT to an available input on your amplifier, receiver, or powered speakers.
- Connect Power: Plug the provided 12V/1A power adapter into the 'DC 12V 1A' input on the rear panel, then plug the adapter into a wall outlet.

This diagram illustrates the typical setup, connecting a turntable to the PM5BT preamplifier, which can then transmit audio wirelessly via Bluetooth to a speaker or output via RCA/AUX to other audio equipment.
5. Operating Instructions
5.1 Power On/Off and Mode Selection
Use the three-position power switch on the front panel:
- OFF: Powers off the unit.
- ON: Powers on the unit for wired RCA output and headphone output.
- ON/BT: Powers on the unit and activates Bluetooth transmission mode. The LED indicator will illuminate.
5.2 Phono/Line Mode Switch

The Phono/Line switch on the rear panel allows selection of the appropriate input gain for your turntable. Use 'Phono' for turntables without a built-in preamp (MM cartridges) and 'Line' for turntables with an integrated preamp.
Ensure this switch is set correctly according to your turntable's specifications. Incorrect selection can result in low volume or distorted audio.
5.3 Bluetooth Pairing
To transmit audio wirelessly to Bluetooth speakers or headphones:
- Switch the power switch to 'ON/BT'. The LED indicator will flash, indicating it is in pairing mode.
- Enable Bluetooth on your receiving device (e.g., Bluetooth speaker, headphones) and set it to pairing mode.
- Select 'MANAYO PM5BT' from the list of available devices on your receiving device.
- Once paired, the LED indicator on the PM5BT will remain solid.
5.4 Audio Adjustment
Use the Bass, Treble, and Volume knobs on the front panel to fine-tune your audio output. Adjust these controls to match your listening preferences and room acoustics.
5.5 Headphone Output
Connect any standard 3.5mm headphones to the headphone jack on the front panel for private listening. The headphone output volume is controlled by the main Volume knob.
6. Maintenance
To ensure the longevity and optimal performance of your PM5BT preamplifier:
- Keep the unit clean by wiping it with a soft, dry cloth. Avoid using liquid cleaners or solvents.
- Do not expose the unit to excessive moisture, heat, or direct sunlight.
- Ensure proper ventilation and do not block any vents.
- Disconnect the power adapter if the unit will not be used for an extended period.
7. Troubleshooting
If you encounter issues with your PM5BT preamplifier, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output |
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| Distorted or poor sound quality |
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| Humming or buzzing noise |
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| Bluetooth pairing failure |
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| Low Bluetooth output volume |
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8. Specifications
| Model Number | PM5.3 |
| Brand | MANAYO |
| Color | PM5BT |
| Compatible Devices | Turntable, Vinyl Record Player |
| Material | Plastic |
| Item Weight | 1.62 pounds (0.73 kg) |
| Package Dimensions | 8.98 x 6.02 x 2.44 inches (22.8 x 15.3 x 6.2 cm) |
| Signal-to-Noise Ratio | >102dB (Line mode) |
| Total Harmonic Distortion | <0.01% |
| Phono Gain | +36dB (MM cartridges) |
| Line Gain | +4dB (Built-in preamp turntables) |
9. Warranty and Support
MANAYO products are designed for reliability and performance. This product is covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty details, duration, and terms, please refer to the warranty information provided with your purchase or visit the official MANAYO website.
For technical support, troubleshooting assistance, or warranty claims, please contact MANAYO customer service through the retailer where the product was purchased or via the contact information available on the MANAYO brand store on Amazon (Visit the MANAYO Store).