XH-M190 Tube Digital Audio Board TDA3116D2 Power Audio Amp 2.0 Class D Stereo HIFI amplifier DC12- 24V 2*100W

The XH-M190 is a professional-grade Class D digital audio amplifier board featuring the TDA3116D2 chipset, delivering 2x100W stereo output with exceptional efficiency and minimal heat generation. Audio engineers, DIY enthusiasts, and professional integrators use this board to build high-fidelity amplification systems for home theaters, active speakers, and portable audio installations. This amplifier solves the critical challenge of achieving high-power audio output from low-voltage DC sources while maintaining crystal-clear sound reproduction and thermal stability.

Product Overview

The XH-M190 utilizes advanced Class D amplification topology, which operates by switching audio signals at high frequencies and filtering the output to reconstruct the analog waveform with minimal distortion. The TDA3116D2 integrated circuit is specifically engineered for digital audio processing, incorporating sophisticated feedback mechanisms and thermal management circuits that enable continuous operation at full power without degradation. This architecture delivers superior efficiency compared to traditional Class AB amplifiers, converting up to 90 percent of input power into audio output rather than waste heat, making it ideal for battery-powered and DC-powered applications.

The board accepts input voltages from 12V to 24V DC, providing flexibility for integration with automotive systems, industrial control panels, and renewable energy setups. The dual-channel stereo configuration ensures balanced left and right channel amplification with matched gain characteristics, critical for maintaining soundstage integrity in professional audio installations. Built-in protection circuits safeguard against short circuits, thermal runaway, and DC offset, while the compact PCB design facilitates seamless integration into custom enclosures and modular audio systems.

Key Specifications

Specification	Details
Product Type	Class D Digital Audio Amplifier Board
Amplifier IC	TDA3116D2
Configuration	2.0 Stereo (Dual Channel)
Output Power	2x100W at 4 Ohms, 10% THD
Input Voltage Range	DC 12V to 24V
Frequency Response	20Hz to 20kHz
THD+N	Less than 0.1% at rated power
Signal-to-Noise Ratio	Greater than 100dB
Input Impedance	20k Ohms
Output Impedance	Less than 0.1 Ohms
Efficiency	Up to 90%
Operating Temperature	-10 to +50 Celsius
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp

Key Features

• TDA3116D2 Class D Amplifier IC: Advanced digital amplification chipset delivering 100W per channel with ultra-low distortion and superior thermal efficiency for extended operating life
• Wide Input Voltage Range (12V-24V DC): Compatible with automotive power systems, industrial 24V supplies, and battery-powered applications without requiring additional voltage regulators
• Stereo 2.0 Configuration: Dual-channel amplification with matched gain and frequency response ensures perfect channel balance for immersive stereo soundstaging
• High Efficiency Class D Design: Converts 90 percent of input power to audio output, minimizing heat dissipation and enabling fanless operation in compact installations
• Integrated Protection Circuits: Comprehensive safeguards against thermal shutdown, DC offset, short circuits, and speaker impedance mismatches protect both board and connected speakers
• Low Noise Floor: Signal-to-noise ratio exceeding 100dB ensures whisper-quiet backgrounds with no audible hum or interference from power supply ripple

Applications and Use Cases

• Active Speaker Systems: Integrate this board into DIY powered speakers or commercial active monitor designs where compact size and high efficiency are essential for portable audio installations
• Automotive Audio Upgrades: Retrofit factory car audio systems with this 12-24V compatible amplifier for powering aftermarket speakers and subwoofers without vehicle electrical modifications
• Home Theater Amplification: Build multi-channel surround sound systems by cascading multiple boards, ideal for budget-conscious enthusiasts building dedicated listening rooms
• Portable Battery-Powered Audio: Integrate with lithium battery packs for mobile DJ equipment, portable PA systems, and outdoor event sound reinforcement with extended runtime
• Industrial Control Panel Audio: Provide alarm, notification, and voice guidance audio in manufacturing facilities and control systems operating on standard 24V industrial power supplies
• Renewable Energy Audio Systems: Pair with solar power systems and DC battery banks for off-grid cabin entertainment and emergency communication systems

How to Use

Begin setup by confirming your power supply delivers stable DC voltage between 12V and 24V with adequate current capacity; a 12V supply requires minimum 20A for full 200W output, while 24V operation requires 10A. Connect the positive and negative power terminals to your DC source using appropriately gauged wire, observing correct polarity to prevent component damage. Install quality audio-grade RCA cables from your source device to the left and right input connectors, maintaining short cable runs under 2 meters to minimize noise pickup. Ensure your connected speakers have impedance ratings between 4 and 8 Ohms; lower impedances will trigger protection circuits, while higher impedances reduce maximum output power.

Mount the amplifier board in a well-ventilated enclosure with minimum 5cm clearance around all sides to permit natural convection cooling, even though Class D efficiency minimizes heat generation. Adjust input level using the onboard potentiometer, starting at minimum and gradually increasing until you achieve desired volume without distortion; excessive input levels cause clipping and activate protection circuits. For optimal sound quality, use shielded audio cables with proper grounding, avoid running power and audio cables in parallel bundles, and implement star-point grounding at the amplifier input to eliminate ground loop hum. Monitor the board during initial operation to confirm stable voltage rails and absence of thermal shutdown events; if protection circuits activate repeatedly, verify speaker impedance and input signal levels.

Frequently Asked Questions

What is the difference between Class D and Class AB amplification?

Class D amplifiers use high-frequency switching to modulate audio signals, achieving efficiency levels of 85-95 percent compared to Class AB amplifiers which operate at 50-70 percent efficiency. The TDA3116D2 Class D topology generates significantly less heat, allowing compact designs without large heatsinks. Class D is ideal for portable and battery-powered applications, while Class AB offers slightly warmer analog characteristics preferred by some audiophiles. For this XH-M190 board, Class D efficiency means you get 100W per channel from a compact board powered by a 12-24V supply that would require substantially larger Class AB designs.

Can I connect this amplifier to a 4-ohm speaker and an 8-ohm speaker simultaneously?

No, the XH-M190 is designed for fixed impedance loads between 4 and 8 Ohms per channel. Connecting speakers of different impedances in parallel creates impedance mismatches that cause unequal power distribution and may trigger thermal protection circuits. If you require flexibility, connect all speakers on each channel in series-parallel configuration to achieve target impedance, or use a separate amplifier board for each speaker group. Always verify total impedance before powering on the system.

What power supply specifications do I need for this amplifier board?

The XH-M190 requires a DC power supply rated for 12V to 24V operation with adequate current capacity: minimum 20A at 12V for full 200W output, or minimum 10A at 24V. Use a regulated power supply with less than 5 percent ripple voltage to minimize noise in the audio signal. For battery applications, ensure your battery can deliver peak current without voltage sag; lithium batteries are preferred over lead-acid for their superior voltage stability. Include a power switch and 20A fuse on the positive supply line for safety and protection against short circuits.

How do I eliminate hum and noise from my amplifier system?

Ground loop hum typically originates from multiple ground paths between your audio source and amplifier. Implement star-point grounding by connecting all ground signals to a single point on the amplifier board rather than multiple locations. Use shielded audio cables with shields connected only at the amplifier end to prevent ground loops. Ensure your power supply is properly filtered with capacitors rated for audio applications. Keep audio cables separated from power cables by at least 30cm to minimize electromagnetic interference. If hum persists, verify your input source is properly grounded and consider using an isolation transformer on the AC mains supply.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
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• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
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• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

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