Welcome to Shanvis Store®

A Premier Indian B2B Sourcing Enterprise

We are dedicated to supporting your growth with seamless global supply logistics. From direct sourcing across international manufacturing hubs to Delivered Duty Paid (DDP) fulfillment anywhere in India, we bridge the gap between global manufacturing and domestic reliability.

Trusted Supply Partner For

🏢 MNCs & Tech Enterprises | 🏥 Healthcare & Hospitals | 🏨 5-Star Hospitality
🏗️ Commercial Construction | 📦 High-Volume Resellers (Amazon, Flipkart, Meesho)

🔍 1. Professional Product Overview

The MINI Audio Digital Power amplifier Stereo board 50Wx2 Amp Amplificador ZK-502L is a high-utility asset meticulously selected for the Shanvis Store 2026 collection. Engineered to bridge the gap between industrial reliability and commercial affordability, this product is a cornerstone for D2C brands and B2B resellers looking to establish market dominance through quality-vetted inventory.

📦 2. Manufacturer Specifications & Technical Configuration

Please refer to the detailed configuration, dimensions, and reference data provided below:

note! The outer casing is a material package, It needs to be assembled by itself, and the material package is given a screwdriver.

The potentiometer adjusts the volume with a switch for easy control of the volume, making it ideal for DIY speakers.If it is a
metal box, you need to bring out the Bluetooth antenna.
The copper DC connector is used to withstand high current and no heat.
Capacitor 470uf35V solid capacitors ensure power storage and heat dissipation, and stable power supply is a prerequisite for good
sound quality.
Free DC head lead, compatible with the input power interface of this product, even if you don't have a DC head adapter or battery,
it can be easily wired.
5.0 Bluetooth version, the transmission efficiency is higher, the transmission distance is farther.
Precautions for use: The power switch on the board is the standby switch. After the switch is turned off, the machine is in a
low-power standby state. To completely turn off the power or unplug the DC plug on the machine for a long time.
Question and answer:
1. How to choose a power supply?
The power supply with the board is critical. The higher the voltage, the higher the current and the better the output power. If
you only have 12V 1A, you can bring a 3-4 inch speaker. If you are 19V 5A or above, there is no problem with 8-10 inches, and the
power supply must be highly valued. If the voltage is too low, the sound will be distorted after the sound is amplified. If the
current is too small, the speaker will pull the voltage low, work abnormally or the sound quality will deteriorate.
It is recommended to use 18V19V24V power supply with current above 3A. If you only have 9V12V or 1A 2A power supply, it can also
be used but the power is small. Please pay attention to the maximum volume when using it, which may affect the sound quality.
2. How to choose a speaker?
Commonly used speakers are generally 8 ohms, can not distinguish between positive and negative, the effect is the same, 4 ohm
speakers can also be used.
If your speaker power is small, it may be used between 10W-30W. The power supply voltage is small to prevent the amplifier from
burning out after burning. For example, select a power supply below 15V.
If you are a 50W-200w speaker, don't worry about the speaker burnout. You can choose 12-24V power supply. The higher the voltage
you choose, the louder the output sound or power.
3. How to connect to Bluetooth?
Power on the power amplifier, connect the speaker, turn the audio knob blue light to turn on, turn on the phone settings -
Bluetooth - search for "BT-WUZHI", and then click the connection, there will be a beep when the connection is successful, this
When it is in Bluetooth mode, you can play music. The next time you power on, it will automatically connect with the phone.
4. When the sound becomes louder, the phenomenon of turbid sound appears.
The sound is distorted. Please change the adapter power supply with a higher voltage rating.
5. After the sound becomes louder, the sound is stuck.
The input power is insufficient, and the power supply itself is intermittently powered off. Please replace the power supply with a
larger power.
Or the output power is too large, the power amplifier board is seriously heated, and thermal protection occurs, reducing power
usage or enhancing heat dissipation.

📦 3. What is in this Order & Packaging Information

What is in this Order:

• 1 x MINI Audio Digital Power amplifier Stereo board 50Wx2 Amp Amplificador ZK-502L
• 1 x Operational Accessories / Power Cable (If applicable)
• 1 x Technical User Manual & Configuration Guide
• 1 x Secure Shanvis Store Enterprise Packaging

🚚 Packaging & Shipping Information:
Our units are shipped in multi-layered industrial-grade vibration-proof boxes. Dispatched via DDP through our primary domestic fulfillment centers in Hyderabad and Bangalore, we ensure rapid multi-state transit and intact delivery directly to your warehouse.

💡 4. Strategic Importance & Business Value

In the evolving landscape of 2026 e-commerce, the MINI Audio Digital Power amplifier Stereo board 50Wx2 Amp Amplificador ZK-502L matters because it minimizes operational downtime and maximizes end-user satisfaction. For corporate buyers and high-volume sellers, it represents a 'Hero SKU' that maintains consistent performance ratings, reducing return rates and enhancing your brand’s supply chain integrity.

🚀 5. Core Advantages & Key Features

• 🛡️ Advanced Build Integrity: Sourced using premium materials to ensure longevity in high-frequency commercial environments.
• ⚙️ Precision Functionality: Every unit is verified to meet international standards (CE/ISO equivalent) for reliable deployment.
• 💹 High ROI Potential: Low maintenance requirements paired with high-performance output ensures maximum profitability per unit.
• 📦 Fulfillment Ready: Designed with protective packaging standards suitable for global transit and Indian marketplace warehouses.

📊 6. Technical Fact Sheet & Commercial Use Cases

👍 8. Core Business Advantages (Top 10)

1. Commercial Durability: Optimized build for educational and industrial use cases.
2. DDP Shipping: Final landed cost certainty with no hidden import fees.
3. Low MOQ Access: Low entry barriers for growing MSMEs and startups.
4. Full GST Compliance: Verified B2B invoices for input tax credit claims.
5. Global Quality QA: Strict multi-point checks at international source points.
6. Supply Chain Stability: Reliable inventory availability for high-volume resellers.
7. High Market ROI: Low overheads and consistent performance metrics.
8. Fulfillment Integration: Packaging standard compatible with major Indian logistics.
9. Reduced Overhead: Streamlined procurement process through official Shanvis partners.
10. Verified Branding: Direct professional partnership with MeeThought/Bhavitha Sree Trading.

❓ 9. B2B Procurement FAQ

🤝 10. B2B VIP Concierge & Bulk Orders

🛡️ 11. Warranty & After-Sales Support

Shanvis Enterprise Warranty: Every unit is backed by our B2B buyer protection program. We offer comprehensive after-sales assistance, defective-on-arrival (DOA) replacements, and dedicated technical support to ensure your business operations never face unnecessary downtime.