Hertz SPL D-Class 4-Channel Amplifier

Price $749
Installation Available


  • Up to 85% efficiency thanks to ADC (Advanced D-Class) output stage
  • USS (Universal Speakers Simulators) allows SP 4.900 to work with head units featuring the “speaker load detection” circuit
  • 160 x 4 (4Ω) with ultra-compact size (211,6 x 130 mm)
  • IP55 aluminum chassis for maximum protection against humidity and external agents
  • No cooling fan to prevent internal accumulation of dirt
  • Sealed power cord, line inputs, and speaker outputs to prevent oxidation
  • Crossovers filters and controls on a single side to facilitate calibration when the product is installed

What Our Customers Are Saying...

Delbert D. Walls Jr.
Nothing but good things to say about this location! I've brought multiple vehicles here, old and new, for different services and Thom has always got me together! Highly recommended!
Mark Waddle
Great service and good price’s. Looks like it was factory installed and sounds great
Drew Rose
Brian and Tom are awesome! The installers here are amazing as well. Don’t forget to tip your installer
Denise Varitek
Very satisfied with the blind side alert system installed on my car. Staff was very professional and knowledgeable.
Wesley Kasperski
They are the best in the business!
Darin Lauer
This was the 7th vehicle I’ve taken to CarTunes in Allen Park for window tint. As with the other six… they did a great job again! Quality work, great price, friendly people.
Mark Counsel
They built me a custom sounds system from top to bottom and explained to me about what to expect from my system. All of the staff was very helpful.