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Product details

Advanced Specifications
  • Amplifier class: Class AB
  • Channels: 4
  • Power @ 4 Ω stereo (14.4 V): 70 W per channel
  • Power @ 2 Ω stereo (14.4 V): 110 W per channel
  • Power @ 4 Ω bridged (14.4 V): 220 W per channel
  • Minimum speaker load: 2 Ω
  • Input sensitivity: 5 V to 350 mV
  • Input impedance @ 1 kHz: 20 kΩ
  • Frequency response (-3 dB): 9 Hz – 40 kHz
  • THD: 0.09%
  • Signal-to-noise ratio (rated power): 102 dB
  • Signal-to-noise ratio (CEA-2006, 1 W): 84 dB
  • Channel separation (rated power): 58 dB
  • Damping factor (20 Hz – 20 kHz): >130
  • Weight: 2.1 kg
  • Dimensions: 270 mm × 150 mm × 60 mm
  • Finish: Brushed Silver
Key Features
  • Class AB 4-channel design focused on clean, direct amplification
  • Stable to 2 Ω stereo for flexible speaker pairing
  • Bridgeable channels for higher output where needed
  • Wide stated bandwidth (9 Hz – 40 kHz, -3 dB) for full-range duties
  • No onboard crossover processing (intended to be run full-range or with external processing)
Best Suited For
  • Front + rear speaker systems needing a compact 4-channel amplifier
  • 2-way active front stages when DSP or head unit provides crossovers
  • Bridged applications where fewer channels with more power are preferred
  • Installations where space is limited but Class AB topology is required
Why OSCA Backs This Product

The Revolution 3A4 makes sense when you want a compact Class AB 4-channel amp that’s easy to integrate and doesn’t add complexity. The power ratings are straightforward, it’s stable down to 2 Ω stereo with bridging available, and it’s designed to run clean without relying on built-in crossovers or processing. For modern installs where space is tight and you still want predictable Class AB behaviour across common speaker loads, it’s a practical choice that’s easy to plan around and tune properly.

Full Sound, Compact Amplification

CRESCENDO REVOLUTION 3A4 is engineered for listeners who value refined performance, consistent sound quality and versatile amplification built to deliver.

Compact 4-channel car amplifier with direct gain design for clean, transparent amplification. The Revolution 3A4 delivers refined, reliable sound quality. High-resolution performance in a compact design built for modern vehicle installations.

Whether you're building a competition-grade SQ system or upgrading your daily driver, the Revolution amplifier series provides the foundation for #TrueAudioQuality.

REAL CAR AUDIO

Backed by People Who Live it

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Revolution Series 3: Proven on the World Stage🏆

Designed for serious enthusiasts who demand clarity, control, and competition credibility, the Revolution 3 Series has earned its place among Crescendo’s most celebrated lines. The 3A1 mono amplifier helped power systems to titles like EMMA Asia “Champion of the Year – Master Unlimited” and IASCA Expert 1 National Champion, proving that the 3 Series has the muscle and finesse to win in elite global circuits. As part of Crescendo’s award-winning lineup at the EMMA Eurofinals 2025, the Revolution 3 Series contributed to 1st place finishes in Entry 3000, Entry Unlimited, and Skilled categories, a testament to its performance at Europe’s most respected sound-off event.

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