Quick Find

Look Out For Free Delivery

Free Delivery now available on selected items.

Free Delivery Items

Support 24/7

Contact Support...

Contact our support team for any issues regarding your order & Technical issues.

AA Newsletter

Instant Savings! You'll receive unique discounts when you sign up for our club.

There is never any obligation to buy and you may cancel at any time. Joining is 100% free!

You will also receive News, Reviews, Competitions & Much More!



US Amps MD43 Amp

1 x 600w RMS @ 4 ohm 4 Channel Amp

US Amps MD43 Amp

Item No: MD43

Delivery: 1-3 working days Warranty: 1 Year Availability: In Stock
14 Day Money Back Guarantee
Technical Help for Life

£549.97 £355.37


  • 100W x 4 @ 4O
  • 150W x 4 @ 2O
  • 300W x 2 @ 4O mono
  • Total Harmonic Distortion: 0.03
  • Frequency Response: 10~30K
  • Power Band Width (Frequency Response): 10Hz - 50 KHz
  • Crossover Frequency: 40~250 Hz - 15~40 dB
  • Damping Factor: 400
  • Dimensions: 2.5 x 10.5 x 19.75 Inches
  • Fuse Rating: 30A x 3
  • Power Voltage Range: 12~16V
  • High efficiency Class D design(1D/2D/3D)
  • Output stages utilize high-current MOSFET devices
  • High speed, audio-grade components in all low-level stages
  • Active Constant Current Bias Tracking Circuit
  • Platinum-plated RCA inputs and connectors
  • Wide range of sensitivity accepts signal from any head unit
  • 24dB/octave Subsonic Crossover
  • 24dB/octave Lowpass Crossover
  • True Line Output
  • Auto Bridge feature
  • Short Circuit Protection
    MD43 - US Amps 4 Ch Amplifier MD 43

No Risk Concept

UK Leading Brand Car Audio Products Saving You Up to 47% off High Street Prices Backed by a RISK FREE 14 Day Money Back Guarantee & Delivered to your Door in 1-3 Days.

Need Help Deciding?

Try our interactive online buyers guide.

Answer a few questions about your specific needs, we’ll help you narrow your choices and focus in on the right products to make a smart buying decision.

View Buyer Guide...

100% Secure!

Shopping at Audio Assault is safe.

Audio Assault use Protx to securely process online payments. Our secure checkout is encrypted using 128-bit GeoTrust SSL certificates.

View Security Policy...

Express UK Delivery

Delivered to your door in 1-3 days.

All orders are dispatched using an Express 1 to 3 Business Day delivery service to UK mainland addresses if ordered before 2pm Mon to Fri.


14 Day Money Back Guarantee

Try your products for 14 days without risk.

If after trying them fully you find the product does not deliver everything that you want or expect, simply return your purchase for a replacement or full refund.