Work Pro Zenith 3500 – High-Power 2-Channel Class D Amplifier

The Work Pro Zenith 3500 is a professional-grade, high-power 2-channel Class D amplifier engineered for demanding audio applications where reliability, clarity, and consistent performance are essential. Each channel delivers 1,750 W into 4 Ω, and in bridge-mono mode, the amplifier can produce a staggering 3,500 W into 8 Ω, making the Work Pro Zenith 3500 perfect for driving full-range loudspeakers, subwoofers, and large PA systems. Designed for touring, live performances, and permanent installations, the Zenith 3500 combines high efficiency, robust protection, and intuitive usability in a compact 2U rackmount chassis. Its design ensures audio professionals can rely on it for consistent output and long-term durability.

Exceptional Power and Audio Performance

The Work Pro Zenith 3500 delivers unmatched power with precision, making it ideal for high-demand sound reinforcement setups. Its frequency response spans 20 Hz to 20 kHz, allowing deep, impactful lows and crisp, detailed highs. Total harmonic distortion (THD) is maintained below 0.15%, while its high damping factor ensures tight control over low-frequency drivers. This level of performance makes the Zenith 3500 an excellent choice for concerts, clubs, theaters, and large-scale events where every detail of sound reproduction matters.

The amplifier’s high headroom ensures that even during peak audio demands, the Work Pro Zenith 3500 maintains clean, undistorted output, allowing for precise musical reproduction and speech clarity. Its robust design ensures professional-grade performance under continuous high-load conditions.

Robust, Tour-Ready Construction

The Work Pro Zenith 3500 is engineered for the rigors of professional use. Its solid metal chassis and front-to-rear forced-air cooling system efficiently dissipate heat during extended operation. Advanced protection circuits safeguard against short circuits, DC offset, overload, over-temperature, VHF interference, and clipping. This ensures that both the amplifier and connected loudspeakers remain safe, making the Zenith 3500 suitable for touring setups, fixed installations, and high-intensity live events.

Flexible Operation and Integration

Connectivity and system integration are effortless with the Work Pro Zenith 3500. Balanced XLR inputs reduce noise interference, while NL4 outputs provide flexible speaker connection options. The amplifier supports Stereo, Bridge, and Parallel operation modes, giving audio engineers maximum configuration flexibility. Independent volume controls and front-panel LED indicators for signal, clip, and protection allow for precise monitoring and adjustment in real time. Its compact 2U design ensures it fits seamlessly in multi-amplifier racks, making it highly adaptable for complex audio systems.

Applications That Demand Performance

The Work Pro Zenith 3500 is perfect for:

• Live Sound Reinforcement – Driving main PA systems and high-output stage monitors with pristine audio.

• Subwoofer Amplification – Bridge-mono mode provides 3,500 W of low-frequency power.

• Fixed Installations – Ideal for auditoriums, theaters, clubs, and houses of worship.

• Touring Systems – Lightweight, durable, and reliable for high-intensity touring environments.

Its combination of raw power, operational flexibility, and advanced protection ensures the Zenith 3500 consistently delivers professional audio performance across multiple applications.

Specifications

Amplifier Type: Class D (Switching Power Supply)
Channels: 2
Output Power (4 Ω Stereo): 2 × 1,750 W
Output Power (8 Ω Stereo): 2 × 1,000 W
Output Power (8 Ω Bridged): 1 × 3,500 W
Frequency Response: 20 Hz – 20 kHz
Total Harmonic Distortion (THD + N): < 0.15%
Signal-to-Noise Ratio (S/N): > 100 dB
Damping Factor: > 500
Gain: 41.2 dB
Input Sensitivity: 0.775 V / 1 V / 32 dB
Input Impedance: 20 kΩ balanced / 10 kΩ unbalanced
Inputs: Balanced XLR3
Outputs: NL4
Protection: Soft start, VHF, DC, overload, clip limiting, short circuit, over-temperature, progressive volume
Cooling: Forced air, front-to-rear
Power Supply: 100–240 V AC, 50/60 Hz
Power Consumption: 1,400 W
Dimensions: 483 × 88 × 305.5 mm
Weight: 10.5 kg

Conclusion

The Work Pro Zenith 3500 is a high-performance, professional amplifier delivering exceptional power, flexibility, and reliability. With 1,750 W per channel, bridge-mono output of 3,500 W, and advanced protection circuits, it is ideal for live sound, installations, and touring applications. Its intuitive controls, robust build, and versatile connectivity make it a top choice for audio professionals who demand uncompromising performance. When consistent high-power output, detailed audio reproduction, and durability are critical, the Work Pro Zenith 3500 sets the standard for professional amplifiers.

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About Work Pro

Work Pro products are engineered and manufactured in Spain, combining advanced technology with rigorous quality control to deliver reliable professional audio solutions. Their modern production facilities integrate automated processes and comprehensive testing, ensuring consistent performance and durability across all products. Over the years, Work Pro has established itself as a trusted name in the professional audio market, offering high-quality amplifiers, speakers, and sound reinforcement equipment that provide excellent performance and value for both touring and installation applications.