SoundTube P350 Class-G 350W Mono-Block Amplifier

The P350 Class-G amplifier delivers robust, distortion-free power for demanding subwoofer and full-range applications. With 350 W RMS into 4 Ω and a peak output of 700 W, it’s engineered to drive high-excursion drivers with precision and headroom. Its compact 2″-high chassis fits neatly into racks or behind equipment, making it ideal for both permanent installations and portable systems.

Advanced Class-G topology optimizes efficiency under light and heavy loads, while gold-plated output terminals ensure reliable connections. Front-panel gain, crossover, and polarity controls let you tailor the P350 to any speaker configuration. RoHS, CE, UL60065, and ETL-C/US certifications attest to its safety and compliance in professional environments.

Key Features

• Output Power: 350 W RMS @ 4 Ω (≤ 0.5% THD), 700 W peak; 225 W RMS @ 8 Ω, 400 W peak
• Topology: Class-G high-current amplification for dynamic efficiency
• Controls: Front-panel gain, crossover (40–120 Hz, 24 dB/octave), and polarity switch
• Frequency Response: 5 Hz–60 kHz (± 3 dB); 10 Hz–20 kHz (+0/–0.25 dB)
• Input Impedance: 22 kΩ unbalanced; 37.5 kΩ balanced
• Output Connections: Gold-plated terminals (accepts #10 AWG or banana plugs)
• Power Requirements: 120 V @ 3 A (8 Ω load); 120 V @ 5.5 A (4 Ω load)
• Voltage Gain: 33 dB
• Certifications: CE, RoHS, UL60065, ETL-C/US

Technical Specifications

• Height: 2″ (50.8 mm)
• Width: 17.25″ (438.15 mm)
• Depth: 13.25″ (336.55 mm)
• Shipping Weight: 23.9 lbs (10.84 kg)
• Carton Size: 21.5″ × 16.75″ × 7″ (546.1 × 425.45 × 177.8 mm)
• Color: Black

What's Included

• Rack-mount adapters
• Owner’s manual & CE certification