AudioControl EPICBIGFOUR 4-Channel Amplifier — 1400W RMS, Compact Digital Class D

Compact Power, Big Sound

The AudioControl EPICBIGFOUR packs serious performance into a slim, rugged chassis. This four‑channel digital Class D amplifier is designed to fit with most aftermarket head units, delivering dependable power while keeping installation neat and unobtrusive. Its compact footprint (6.1” W x 10.56” L x 2.01” H) lends itself to under-seat or compact dash placements without sacrificing audio reach.

With 1400W RMS of stable output, the EPICBIGFOUR aims to provide a confident foundation for multi‑speaker systems. The device is engineered to maintain clarity at volume, offering a tight low end and responsive highs that complement today’s modern car audio setups. The included ACR‑E Bass Knob brings subwoofer control directly to the driver’s reach, allowing you to tailor bass levels on the fly as you tune your ride’s acoustics.

Smart, Flexible Sound Shaping

• Variable high and low pass filters (12 dB/octave Linkwitz‑Riley) help route the right frequencies to the right speakers, keeping response clean and balanced.
• Line‑level inputs enable easy integration with most aftermarket head units, reducing the need for bulky adapters.
• Idle‑draw management minimizes battery drain when the system isn’t playing, helping you arrive with power left for other essentials.

Reliability and Ease of Use

• Multiple built‑in protection modes guard against voltage swings, shorts, and thermal issues to preserve long‑term performance.
• Direct‑wired terminals with hex screws (4GA power, 8GA speaker) ensure solid, low‑resistance connections for consistent current flow.
• EPICENTER Link port allows seamless expansion with AudioControl’s bass restoration ecosystem, delivering cohesive performance when paired with compatible gear.

Real‑World Scenarios

Whether you’re upgrading a daily driver or building a premium weekend cruiser, the EPICBIGFOUR is built to adapt. Its EPICENTER‑ready design invites you to explore deeper bass without compromising overall clarity. The compact size remains friendly to tight vehicle layouts, while the robust power and precise filtering help you achieve a balanced soundstage across front and rear speakers. Paired with AudioControl’s EPIC speakers and subwoofers, you can pursue a broader, more immersive listening experience without overhauling your interior dimensions.

What you get in practice

• Efficient power delivery for multiple speakers with a tight, controlled bass foundation.
• Flexible installation options thanks to a compact, rugged chassis.
• Driver‑seat bass control for convenient adjustments on the go.
• Potential to expand into a full EPIC bass restoration setup for enhanced depth.