4 Ch Class A/B 2000 w RMS 2 Ohm Amplifier w/WM-1 Voltmeter SMD-500.4AB DS18

• Powerful 4-Channel Output: Delivers 300W RMS per channel at 4 ohms and 500W per channel at 2 ohms, with 1000W bridged, providing high-quality power for both speakers and subwoofers.
• Precision Tuning Capabilities: Features selectable high-pass, low-pass, and full-range crossovers (50Hz–2KHz), 0-9dB bass boost, and a 0-180 phase selector for optimal sound customization.
• Reliable & Durable Design: Built with a heavy-duty Korean board, Class AB analog circuitry, and advanced cooling fan for efficient heat management during extended use.
• Enhanced Control & Monitoring: Comes with a remote level knob with a clip indicator, VM-1 voltmeter for real-time voltage monitoring, and IR remote-controlled RGB LED lighting for visual customization.
• Comprehensive Protection Features: Equipped with thermal, overload, short circuit, voltage input, and clipping protection to ensure safe, consistent operation in demanding setups.

4   Ch Class A/B 2000 w RMS 2 Ohm Amplifier w/WM-1 Voltmeter SMD-500.4AB DS18

The SMD-500.4AB is a high-performance 4-channel amplifier designed for superior audio clarity, delivering 300 watts RMS per channel at 4 ohms and up to 500 watts at 2 ohms. With 1000 watts bridged into 2 channels, it is ideal for driving both speakers and subwoofers, providing versatile system configurations. Built on a powerful Class AB analog design, this amplifier guarantees precise sound reproduction with low distortion, perfect for audiophiles demanding peak performance.

Key Features:

• Class AB Analog Design for smooth, natural audio playback


• Selectable HPF/LPF/Full-Range Crossovers for precise tuning (50Hz–2KHz)


• 0-9dB Bass Boost Control at 30Hz–60Hz for enhanced low-frequency response


• RGB Lighting with IR Remote Control to customize LED colors and patterns


• Remote Level Control with clip indicator in a durable metal case


• Tiffany RCA Connectors for professional-grade signal transmission


• Thermal, Overload, and Short Circuit Protection for safe operation


• Reliable Heavy-Duty Korean Board Design with Class AB circuitry


• VM-1 Voltmeter Display to monitor system voltage in real-time

Specifications:

• RMS Power @ 4 Ohm: 300W x 4


• RMS Power @ 2 Ohm: 500W x 4


• RMS Power @ 4 Ohm Bridge: 1000W x 2


• Frequency Response: 10Hz – 24KHz


• Signal-to-Noise Ratio: >98dB


• Efficiency @ 4 Ohm: >70%


• Damping Factor: 160


• Input Impedance: 22K Ohm


• Channel Separation: >50dB


• Total Harmonic Distortion (THD): 0.10%


• Low-Level Input Range: 200mV – 6V


• Phase Selector: 0 – 180


• Thermal Protection


• Overload Protection


• Short Circuit Output Protection


• Voltage Input Protection


• DC Output Protection


• Clipping Protection

Measurements:

• Overall Length: 16.6" / 422mm


• Overall Width: 9.15" / 232mm


• Overall Height: 3" / 76mm


• Heatsink Length: 15" / 380mm


• Gross Single Unit Weight: 12 lbs / 5.44 kg

The SMD-500.4AB amplifier from DS18 is engineered to elevate any high-performance car audio setup with durability, power, and flexibility. Whether driving speakers or subwoofers, this amplifier delivers unmatched audio quality and reliable performance for serious audio enthusiasts looking to fine-tune their sound systems.

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:

Credit and Debit Cards

• Visa
• Mastercard
• American Express
• Discover
• Diners Club

Digital Wallets

• Amazon Pay
• Apple Pay
• Meta Pay (formerly Facebook Pay)
• Google Pay
• Shop Pay
• PayPal

International Payment Methods

• Bancontact
• iDEAL

Bank Transfers

• Zelle

Financing Options

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

• Klarna
• Affirm
• Sezzle
• Snap
• Acima
• Tiptop

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.

Why Can’t I Track My Order?

If you're having trouble tracking your order:

• Make sure you’ve received the shipping confirmation email with the tracking number.
• Log into your account on our website and use the “Check Your Order Status” button.
• If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.