DD Audio 400 Watt Class D Amplified Mini Terminal Cup w/ Remote ATC-400

• POWERED ENCLOSURE UPGRADE: Transforms any standard speaker or subwoofer box into a fully powered system by replacing the terminal cup with a built-in Class D amplifier for a clean, space-saving install
• COMPACT HIGH OUTPUT DESIGN: Delivers up to 325W RMS at 1 ohm and 500W dynamic power from a tiny footprint, perfect for tight builds, custom boxes, and portable audio setups
• SUB OR FULL RANGE MODES: Switch between dedicated subwoofer mode (30–80 Hz) or full range mode (80 Hz–20 kHz) for flexible use in bass systems, mids/highs, or full DJ-style party boxes
• BUILT FOR 1, 2, AND 4 OHM LOADS: Stable across multiple impedance configurations, making it easy to pair with subwoofers or pro audio drivers like VO Series speakers
• CLEAN SIGNAL INPUT OPTIONS: Equipped with both RCA low-level and high-level inputs for seamless integration with factory or aftermarket systems
• ALL ALUMINUM HEAT SINK DESIGN: Integrated aluminum chassis improves heat dissipation and reliability while maintaining a compact and durable build
• COMPLETE CONTROL INCLUDED: Comes with a remote controller for convenient system adjustment and tuning on the fly

DD Audio 400 Watt Class D Amplified Mini Terminal Cup w/ Remote ATC-400

This Listing Includes

• (1)  DD Audio Terminal Cup ATC-400


• (1) Bass Remote

The DD Audio ATC-400 Amplified Terminal Cup turns a standard speaker enclosure into a powered audio system. This compact Class D amplifier replaces the passive terminal cup position on an enclosure, giving builders a clean, space-saving way to add serious power without mounting a traditional external amp.

Designed for both subwoofer and full-range applications, the ATC-400 can power low-end bass setups or full-range pro audio builds. With up to 325 watts continuous power at 1 ohm and 500 watts dynamic power, this tiny powerhouse is ideal for party boxes, portable DJ-style systems, VO Series speaker builds, and custom powered enclosures.

Its all-aluminum chassis acts as an integrated heat sink, helping manage temperature while keeping the design compact and efficient.

Features

• Amplified terminal cup design for powered enclosure builds


• Compact high-speed Class D amplifier


• Works in subwoofer or full-range mode


• Delivers power into 4 ohm, 2 ohm, and 1 ohm loads


• Up to 325W continuous power at 1 ohm


• 500W dynamic power output


• RCA and high-level inputs


• All-aluminum chassis with integrated heat sink


• DD engraved logo faceplate


• Remote controller included


• Great for party boxes, pro audio builds, and powered sub enclosures

Specifications:

• Amplifier Class: Class D


• Output Channels: 1


• Total Wattage: 400W


• Dynamic Wattage: 500W


• Continuous Power @ 4 Ohms: 100W


• Continuous Power @ 2 Ohms: 225W


• Continuous Power @ 1 Ohm: 325W


• Frequency Response: Sub Mode: 30 Hz - 80 Hz / Full Range Mode: 80 Hz - 20 kHz


• Operating Voltage: 8V - 16V


• Test Voltage: 14.4V


• RCA Input Voltage Sensitivity: 8V - 0.2V


• RCA Input Signal-to-Noise Ratio: >100 dB


• THD: <1%


• High-Pass Filter: 80 Hz


• Sub-Sonic Filter: 30 Hz


• Low-Pass Filter: 80 Hz


• Power Wire Gauge Input: 4 AWG


• Speaker Wire Gauge Output: 12 AWG

Faceplate Dimensions:

• Width: 3.78"


• Length: 4.8"

Overall Dimensions:

• Width: 2.93"


• Length: 3.75"


• Depth: 2"

Accepted Payment Methods at Big Jeff Audio

At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:

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• Zelle

Financing Options

We also offer financing options to make purchasing easier. Learn more about our financing options here.

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If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.

Shipping Options and Delivery Time

Do You Offer Expedited Shipping?

Yes! At checkout, you can select from different shipping options:

• Standard Shipping: Free for orders over $100.
• Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.

How Long Does Delivery Take?

• Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
• Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.

What Happens If My Package Is Undeliverable?

If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.

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