🔊 Quantum Audio 4 Channel Amplifier — Description & Specs
🎵 Product Description
The Quantum Audio 4-Channel Amplifier is a car audio power amplifier designed to boost the output of your vehicle’s speakers — delivering louder, cleaner, and more detailed sound compared to a factory head unit alone. It’s ideal for driving four full-range speakers (front and rear) or used in a bridged configuration to power a subwoofer while still driving two other channels. Built with Class A/B circuitry and high-efficiency MOSFET technology, this amp strikes a balance between power delivery, efficiency, and reliability — making it a good choice for everyday listening, enhanced sound builds, or modest SPL systems.
Featuring adjustable crossovers, the amplifier allows you to tailor frequency output for your speakers or subs, and bridgeable channels give you extra flexibility for system design. Whether you’re powering mids, highs, or mids and subs together, this amp brings more punch and control to your audio.
📊 Key Specifications
| Specification | Details |
|---|---|
| Model | Quantum Audio 4-Channel Amplifier |
| Amplifier Class | Class A/B with high-efficiency MOSFET design |
| Channels | 4 (stereo or bridged) |
| RMS Power Output (Typical) | • ~100 W × 4 @ 4 Ω • ~200 W × 4 @ 2 Ω • ~400 W × 2 bridged @ 4 Ω* |
| Maximum Power Output (Peak) | Up to ~2400 – 3200 W peak (varies by specific SKU) |
| Signal-to-Noise Ratio | > 90 dB (clean background) |
| Total Harmonic Distortion (THD) | < 0.5 % (low distortion) |
| Crossover Controls | Variable High-Pass and Low-Pass filters with adjustable frequency range |
| Bass Boost | Adjustable (typically 0–12 dB @ 45 Hz) |
| Input Sensitivity | ~285 mV – 6 V (compatible with most head units) |
| Load Stability | Stable at 2 Ω stereo; bridged 4 Ω load recommended |
| Frequency Response | ~18 Hz – 22 kHz (full-range audio) |
| Dimensions | ~275 mm × 242 mm × 50 mm* (varies by model) |
| Cooling | Heat-sink design for thermal management |
Exact RMS figures and dimensions can vary depending on the specific Quantum Audio 4-channel model (e.g., QEA500.4, QEA800.4). The specs above are representative of typical configurations.
🔧 Key Features
🎶 Multi-Channel Power
Delivers powerful audio across four channels — perfect for full-range speaker systems or bridged subwoofer applications.
🎛️ Crossover Flexibility
Variable high-pass and low-pass filters let you tailor which frequencies go to your speakers or subs, improving clarity and protecting drivers from unwanted frequencies.
⚡ Bridgeable Channels
You can bridge two channels together to provide more power to a subwoofer or larger speaker setup.
🔊 Clean Sound & Low Distortion
High signal-to-noise ratio and low THD mean cleaner sound and better detail at high volumes.
🛡️ Efficient and Reliable
MOSFET power supply and heat-sink design help maintain stable performance even under load.
📌 Who It’s For
This Quantum Audio 4-Channel Amplifier is great for:
-
Upgrading OEM head units for more dynamic sound.
-
Driving front and rear speakers with reliable power.
-
Bridged operation to power a subwoofer while still driving speakers.
-
Car audio builds needing flexible tuning without a big budget.