Description
Description
DC Audio 90.4 Competition 4-Channel Amplifier
The DC Audio 90.4 Amplifier is a powerhouse designed for the sound quality (SQ) enthusiast who demands precision, clean output, and versatility in their build. As part of DC Audio’s renowned Competition Series, this 500-watt Class A/B 4-channel amplifier delivers unmatched clarity while offering multiple setup options—perfect for front stage amplification or bridging to a subwoofer stage with bass knob control. Built with high-quality components and a heavy-duty heatsink, the DC Audio 90.4 sets the standard for SQ amplifiers on the market today.
DC Audio 90.4 Amplifier Power Ratings
- 90W x 4 @ 4 ohms (14.4V)
- 130W x 4 @ 2 ohms (14.4V)
- 250W x 2 @ 4 ohms bridged (14.4V)
- Total Power: 500 Watts RMS
Key Features of the DC Audio 90.4
- Class A/B Competition Series Amplifier
- Fully active crossover for advanced tuning
- Variable high-pass, low-pass, and band-pass filters
- Bass Boost (0–18dB) with remote control included
- Input Mode Switch for flexible setups
- 8 AWG speaker connections
- 4 AWG power and ground inputs
- LED Power & Protect status lights
- Durable HD heatsink for superior thermal management
Full Specifications – DC Audio 90.4 Amplifier
| Model | DC Audio 90.4k |
| Input Sensitivity | 6V ~ 0.2V |
| Frequency Response | 20Hz ~ 20KHz |
| Crossover Slope | 12dB / Octave |
| CH1/2 Subsonic Filter | 10Hz ~ 100Hz |
| CH1/2 Crossover | 50Hz (500Hz) ~ 500Hz (5KHz) |
| CH3/4 Subsonic Filter | 10Hz ~ 100Hz |
| CH3/4 Crossover | 50Hz (500Hz) ~ 500Hz (5KHz) |
| Multiply | x1, x10 |
| Crossover Selector | HPF / FULL / LP-BP |
| Bass Boost | 0 ~ 18dB |
| Signal to Noise Ratio | 105 dB |
| Damping Factor | 200+ |
| THD @ 4 ohms | < 0.1% |
| Fuse Rating | On-board 80A |
| Heatsink Dimensions | 14.00" (L) x 9.38" (W) x 2.35" (H) |
Why Choose the DC Audio 90.4?
If you’re serious about sound quality amplification, the DC Audio 90.4 is one of the most versatile 4-channel amps available. Whether powering your front stage, bridging to a sub stage, or using its fully active crossover for precise tuning, this amplifier ensures you get the best from your system. With its premium construction, advanced tuning options, and reliability, it’s a favorite for SQ builds and competition setups alike.
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