Romicta S-188 Pro 2.1 Channel Stereo Audio Amplifier User Manual

Introduction

Thank you for choosing the Romicta S-188 Pro 2.1 Channel Stereo Audio Amplifier. This amplifier is designed to provide a high-fidelity audio experience for your home, featuring Bluetooth 5.0 connectivity, USB, and AUX inputs, along with dedicated controls for bass, treble, and subwoofer output. Please read this manual carefully to ensure proper setup, operation, and maintenance of your device.

The Romicta S-188 Pro 2.1 Channel Stereo Audio Amplifier, a compact black unit with blue LED lighting, placed on a wooden surface between two wooden bookshelf speakers.

Image: Romicta S-188 Pro amplifier with speakers in a home setting.

What's in the Box

Verify that all items are present in the package:

1 x Romicta S-188 Pro 2.1 Channel Amplifier
1 x Remote Control
1 x 12V 5A DC Power Adapter
1 x User Manual

Contents of the Romicta S-188 Pro amplifier box, showing the amplifier, remote control, power adapter, and user manual.

Image: Package contents including the amplifier, remote, power adapter, and manual.

Product Features

2.1 Channel Audio Amplifier: Designed for immersive home theater or stereo systems with dedicated subwoofer control.
High Power Output: Delivers 50W x 2 + 60W nominal power and up to 300W x 2 + 360W peak power for clear, distortion-free sound.
Multiple Connectivity Options: Supports Bluetooth 5.0 for wireless streaming, USB for direct playback, and AUX input for wired connections to TVs, PCs, and other devices.
Dedicated Subwoofer Control: Independent SUB VOL knob allows precise adjustment of subwoofer bass output.
Durable Metal Chassis: Premium all-metal casing ensures efficient heat dissipation and long-term reliability.
Convenient Remote Control: Includes a remote for easy operation from a distance.

Romicta S-188 Pro amplifier connected to speakers and a smartphone via Bluetooth, illustrating enhanced Bluetooth 5.0 connectivity.

Image: Amplifier connected to speakers and a smartphone via Bluetooth.

Setup Guide

1. Connecting Speakers and Subwoofer

The S-188 Pro amplifier supports both passive speakers and subwoofers, as well as active subwoofers via the LINE output.

Passive Speakers (FR/FL): Connect your passive left (FL) and right (FR) speakers to the corresponding speaker terminals on the rear panel. Ensure correct polarity (+ to + and - to -). The amplifier supports 4-8Ω impedance speakers.
Passive Subwoofer (SUB): Connect your passive subwoofer to the dedicated SUB speaker terminals on the rear panel, observing polarity.
Active Subwoofer (LINE Output): For an active (powered) subwoofer, connect the LINE output (RCA L/R) from the amplifier to the input of your active subwoofer.

Detailed diagram of the Romicta S-188 Pro amplifier's front and rear panels, showing all inputs, outputs, and controls.

Image: Front and rear panel connections and controls.

2. Connecting Audio Sources

Bluetooth 5.0: Power on the amplifier. The display will show "BLUE". On your device (smartphone, tablet), search for "S-188 Pro" in the Bluetooth settings and pair.
USB Input: Insert a USB drive containing MP3 audio files into the USB port on the front panel. The amplifier will automatically switch to USB mode and begin playback.
AUX Input: Connect your audio source (TV, PC, DVD player, game console) to the AUX1 (RCA L/R) or AUX2 (3.5mm Jack) input on the rear panel using appropriate audio cables. Select AUX mode using the MODE button.

Diagram showing various devices like phones, tablets, laptops, PCs, and TVs connecting to the Romicta S-188 Pro amplifier via RCA or Bluetooth inputs, and outputs to passive speakers, passive subwoofer, powered subwoofer, powered speakers, and headphones.

Image: Various audio source connections and output options.

3. Power Connection

Connect the provided 12V 5A DC power adapter to the "POWER INPUT" port on the rear panel of the amplifier, then plug the adapter into a wall outlet.

Operating Instructions

Power On/Off

Press the power button on the front panel or the remote control to turn the amplifier on or off.

Input Selection

Press the "MODE" button on the front panel or the remote control to cycle through available input modes: Bluetooth (BLUE), USB, and AUX.

Volume Control

Master Volume: Use the large "VOLUME" knob on the front panel or the "VOL +/-" buttons on the remote to adjust the overall output volume.
Subwoofer Volume: Use the "SUB VOL" knob on the front panel to independently adjust the subwoofer output level.

Tone Controls

Adjust the "BASS" and "TREBLE" knobs on the front panel to fine-tune the low and high frequencies of your audio output.

USB Playback Controls

When in USB mode, use the "Play/Pause", "Previous Track", and "Next Track" buttons on the front panel or remote control to manage playback.

A hand holding the remote control for the Romicta S-188 Pro amplifier, with a detailed diagram of the remote's buttons and functions.

Image: Remote control and its functions.

Maintenance

Cleaning: Use a soft, dry cloth to clean the amplifier's exterior. Do not use liquid cleaners or solvents.
Ventilation: Ensure the amplifier is placed in a well-ventilated area to prevent overheating. Do not block the ventilation slots.
Power: Disconnect the power adapter from the wall outlet when the amplifier is not in use for extended periods.
Environment: Avoid exposing the amplifier to direct sunlight, high temperatures, humidity, or dust.

Troubleshooting

Problem	Possible Cause	Solution
No sound output.	Power not connected or turned on. Incorrect input mode selected. Speaker cables loose or incorrectly connected. Volume too low. Audio source not playing or muted.	Ensure power adapter is connected and amplifier is on. Press MODE button to select correct input (Bluetooth, USB, AUX). Check all speaker and subwoofer connections for proper polarity and secure fit. Increase master volume and subwoofer volume. Verify audio source is playing and not muted.
Bluetooth connection issues.	Amplifier not in Bluetooth mode. Device too far from amplifier. Bluetooth device not paired.	Select Bluetooth mode on the amplifier. Ensure device is within 15 meters of the amplifier. Go to your device's Bluetooth settings, forget "S-188 Pro" if previously paired, and re-pair.
Distorted or poor sound quality.	Volume too high, causing clipping. Incorrect tone control settings. Poor quality audio source or cables. Speaker impedance mismatch.	Reduce master volume. Adjust Bass and Treble knobs to a neutral position or to your preference. Try a different audio source or higher quality cables. Ensure speakers are 4-8Ω impedance.

Specifications

Model Number	S-188 Pro
Channels	2.1
Output Power (Nominal)	50W x 2 (Speakers) + 60W (Subwoofer)
Output Power (Max)	300W x 2 (Speakers) + 360W (Subwoofer)
Connectivity Technology	Bluetooth 5.0, USB, AUX (RCA, 3.5mm Jack)
Speaker Impedance	4-8 Ohms
Control Type	Manual Knobs, Remote Control
Compatible Devices	Smartphone, Tablet, PC, TV, Game Console, Speakers, Subwoofer
Power Input	DC 12V 5A
Dimensions	27.51 x 21.01 x 6.6 cm (approx. 10.8 x 8.3 x 2.6 inches)
Weight	889 g (approx. 1.96 lbs)
Manufacturer	Romicta
Country of Origin	China

Warranty and Support

For warranty information and technical support, please refer to the documentation included with your purchase or contact Romicta customer service through the retailer where the product was purchased. Keep your proof of purchase for warranty claims.

For further assistance, please visit the official Romicta website or contact their support team directly.

Romicta S-188 Pro