MAX98357 I2S 3W Class D Amplifier Interface Audio Decoder Module Filterless Board

The MAX98357 I2S 3W Class D Amplifier Interface Audio Decoder Module Filterless Board is designed for seamless integration with Raspberry Pi systems. It accepts digital audio via the I2S interface, converting it to an analog output signal while amplifying it for direct speaker connectivity. This module effectively merges an I2S D/A converter with an audio amplifier into a single, compact unit.

This compact stereo amplifier module, the MAX98357a, is impressively robust, capable of delivering up to 3.2W to 4Ω speakers. Operating within a voltage range of 2.7 V–5.5 V, the Class D amplifier boasts high efficiency, making it an ideal choice for mobile and battery-operated applications.

The I2S audio input accommodates both 3.3V and 5V levels. Users can adjust the gain to selected values of 3dB, 6dB, 9dB, 12dB, or 15dB through the gain input.

By default, the output signal combines stereo signals (L and R). However, this configuration can be modified using a resistor to output only the left or right channel.

Specifications:

• 3.2 W output at 10% THD, with a 4 Ω speaker impedance and 5 V power supply

• Operating voltage range: 2.7–5.5 V

• PSRR of 77 dB at 1 kHz

• Selectable gain options: 3 dB, 6 dB, 9 dB, 12 dB, 15 dB

Package Includes:

• 1 x MAX98357 I2S 3W Class D Amplifier Module

Return Policy Overview

At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.

Return Window

• Standard Returns: 7 days from delivery date for any reason, including if you simply changed your mind.
• Defective/Damaged Items: 7 days from delivery date for items received damaged or defective.
• Manufacturing Defects (Warranty): 15 days from delivery for manufacturing defects, unless a different warranty period is specified on the product page.

What Can Be Returned

Most items sold on ROBODIUM™ can be returned within the return window, including:

• Items you no longer need or changed your mind about
• Products received in damaged condition
• Items with manufacturing defects
• Wrong items received (item mismatch)
• Missing components inside the package

Return Conditions

To be eligible for a return, items must be:

• In their original, unused condition
• In the original packaging with all accessories, manuals, and free gifts (if any)
• Accompanied by proof of purchase

Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.

How to Initiate a Return

1. Contact us via email at support@robodium.com or call +91 8123109966
2. Provide your order number and reason for return
3. Submit photos/videos of the item (especially for damaged/defective products)
4. Our team will review and approve your return request within 1-2 business days

Return Pickup Process

We arrange the return pickup for you - hassle-free returns similar to major e-commerce platforms.

• Once your return is approved, we will coordinate pickup from your location.
• Pack the product securely in its original packaging.
• Include a copy of the order confirmation or packing list.
• Keep the package ready - our logistics partner will collect it at the scheduled time.

Return Shipping Costs

• Defective, damaged, or wrong items: ROBODIUM™ covers all return shipping costs. No charges to you.
• Change of mind returns: A flat return shipping fee of ₹100 will be deducted from your refund amount.

Refund Process

• Refund Method: Refunds are processed to your original payment method.
• Processing Time: 5-7 business days after we receive and inspect the returned item.
• Refund Amount: Full purchase price minus any applicable return shipping fees.
• Orders canceled before shipping receive a full refund (minus up to 5% payment gateway charges, if applicable).

Replacements

• Once the returned item is inspected and approved, we ship the replacement at no additional cost.
• Replacement items are dispatched within 2 business days of receiving your return.
• If replacement is unavailable, we provide a full refund.

Warranty Terms

All products include a minimum 15-day warranty against manufacturing defects unless otherwise specified on the product page.

Warranty does not cover: misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.

Order Cancellations

• Orders in Pending or Payment Verification status can be canceled for a full refund.
• Contact us immediately at support@robodium.com to cancel before shipping.
• Once an order is shipped, it cannot be canceled but can be returned after delivery.

Customer Service Commitment

• Email Response Time: Within 24 hours on business days
• Phone Support: Monday-Saturday, 10:00 AM - 6:00 PM IST
• Return Request Review: 1-2 business days
• Issue Resolution: Within 48 hours of verification