Cloud Electronics VA4120 – 4-Channel Audio Power Amplifier (120W per Channel @ 4Ω or 25/70/100V)
The Cloud VA4120 is a cost-effective, high-performance 4-channel power amplifier designed for demanding commercial audio applications. With 120 watts per channel, it supports both low-impedance (≥4 ohm) and high-impedance (25V, 70V, 100V) distributed speaker systems, making it ideal for installations in retail, hospitality, corporate, and public environments.
Housed in a 2RU chassis, the VA4120 delivers reliable performance with built-in limiters and full protection circuitry, ensuring long-term operation and speaker safety. All connections and controls are conveniently located on the rear panel, while the front panel includes LED indicators for signal, peak, and protection status.
Balanced line-level inputs with individual gain presets
Switchable 65 Hz high-pass filter per channel (ideal for transformer protection on 70/100V lines)
Built-in per-channel limiter to prevent clipping
DC offset, thermal, and overcurrent protection circuitry
LED indicators per channel: signal present, clipping, and protection
Universal mains operation: selectable 115V or 230V
Forced-air cooling with dual 80mm fans (front-to-back airflow)
Technical Specifications
Line Inputs
Frequency Response: 20 Hz – 20 kHz, ±1 dB
Input Impedance: 47 kΩ
Headroom: 16 dB
Noise: < -85 dB (22 kHz bandwidth)
Speaker Outputs
Output Power: 120W per channel (1 kHz sine wave)
Minimum Load:
Low-Z: 4 ohms
High-Z: 25V: 5.2Ω, 70V: 41Ω, 100V: 83Ω
Frequency Response: 20 Hz – 20 kHz ±1 dB (Hi-Z filter off)
THD + N: < 0.05% @ 1 kHz
Protection: Signal limiter, DC, overcurrent, overtemperature
Power & Efficiency
Power Input: 115V / 230V ±10%, 45–65 Hz (selectable)
Fuses: 4A (230V) or 8A (115V), 5×20 mm time delay
Power Consumption:
Idle: 27.5W
1/8th Power: 418W
1/3rd Power: 562W
Heat Dissipation:
Idle: 93.9 BTU/hr
1/8th Power: 1,221 BTU/hr
1/3rd Power: 1,508 BTU/hr
Cooling & Construction
Cooling: 2 × 80mm fans, front-to-back airflow
Dimensions (W × H × D): 19" × 3.5" × 12.2" (2RU)
Shipping Dimensions: 22.8" × 6.7" × 21.5"
Weight: 40.8 lbs (Shipping: 45.5 lbs)
What’s in the Box
Cloud Electronics VA4120 4-Channel Power Amplifier
Power Cord
User Documentation
Recommended for: Multi-zone audio systems in restaurants, hotels, offices, schools, churches, and other commercial venues requiring reliable, high-efficiency amplification for both low- and high-impedance speaker systems.
Price Match Guarantee
At Wonder Play Ventures, we strive to provide the best prices on all our products. If you find a lower price from another online retailer, simply let us know, and we will beat it with confidence. Our goal is to ensure you always get the best possible deal on the items you order.
Our 100% Price Match Guarantee is subject to the following conditions:
Promotions such as rebates or "buy one, get one free" offers do not qualify.
The competing website cannot be a discounter or auction site (e.g., eBay, etc.).
The competitor must be an Authorized Retailer of the product in question.
The price match will take into account the item price, sales tax, and shipping fees.
Price matches do not apply to exchange orders or replacements.
Please Note: Some exclusions may apply.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
