www.maxxsonics.com | info@maxxsonics.com
Headquartered in the suburbs of Chicago, IL., Maxxsonics USA is home to car, home, marine, powersports and personal audio brands Hifonics, MB Quart, Autotek, and Crunch.

Alden Stiefel founded Maxxsonics in 2001 with a handful of consumer electronics and automotive security veterans, many of whom serve in senior management positions today. The newly formed company immediately acquired Hifonics and Crunch. A few years later, in 2004 Maxxsonics expanded the business with the acquisition of San Francisco based Autotek. Maxxsonics continued expanding in 2005 with the acquisition of long-time German speaker manufacturer MB Quart. The acquisition of MB Quart made Maxxsonics a top contender in the premium speaker category.
Click here to read Alden’s letter

After a successful launch of the MB Quart personal audio category QUB and dramatic expansion of the Marine and Powersports segments in 2014, Maxxsonics has turned its focus sharply at the independent retail channel for 2015. The Elite product for Hifonics, previous only a line of amplifiers, has now been expanded to two lines of amplifiers, speakers, subwoofers and retailer programs that moves this non-internet product into the brick and mortar retailers that are essential for car audio brand growth and enthusiast loyalty. In addition to the growth of the “Elite” program Maxxsonics has completely revamped the MB Quart Mobile audio segment. Nearly 100 new products for 2015, including special products for speciality retailers, distributors, big box retailers, and international customers.

Capping off 2014 was the introduction of an MB Quart QUB Portable Bluetooth Speaker launched for the Polaris RZR. A personal utility off road vehicle. The QUBP is only available through Polaris retailers and the Polaris online store.

In January 2014, Maxxsonics revealed the portable Bluetooth™ speaker products QUB, an acronym for MB Quart Universal Bluetooth.


Maxxsonics USA brands can be found at leading specialty retailers and boutiques in countries across the globe including Europe, Russia, Latin American and Asia. Additionally, Maxxsonics brands are prominently featured on all major online resellers across the Internet.


100% Powered by Maxxsonics

From entry level to high performance, we offer an unparalleled array of the finest products on the market today.

It’s the result of a simple philosophy:

Listen to the customer

That’s what all of our customers can expect when they purchase Maxxsonics products.


The team

The Power behind Maxxsonics

  • Alden Stiefel
    President, CEO

    There are rumors that Alden Stiefel was present at the inception of the mobile electronics and auto security businesses. Regardless... Read more

  • Ted Henricks
    Vice President: Sales & Marketing

    Ted is one of two staffers at Maxxsonics with a dedicated room in his home just for atmospheric balanced storage... Read more

  • Sherri Sawyer
    Vice President: Finance & CFO

    There is an old adage – “finance people don’t know product or music, they just count beans.” Not Sherri. In... Read more

  • Marc Sullivan
    Vice President: Operations

    Marc Sullivan is our Vice President of Operations. His title explains it all. Maxxsonics operates at maximum efficiency because Marc... Read more

  • Hector Delgado
    International Sales Manager

    Hector was born in Guadalajara, Mexico. He worked in several industries holding positions in Global Procurement, Operations, Consulting and Sales.... Read more

  • Sam Dattalo
    National Sales Manager

    Sam or “Sammy the Bull” as a few dealers down Chicago know him, is a lifer in Consumer Electronics. Before... Read more

  • Brian Sherman
    Director of Business Development

    Brian Sherman is our “man on the inside”. In his role of Director of Business Development, it is Brian’s job... Read more

  • Keith Carter
    Brands Design Manager

    The touch and feel of Maxxsonics product designs create the crucial first impressions for all our customers. Long before they... Read more

  • Maxx Stiefel
    Financial Operations Manager

    Maxx joined the company in the summer of 2010 as an intern in Operations. That short experience and working in... Read more

  • H. Christopher Parvin
    Director of Marketing

    ‘Harley’ is the keeper of the Brands. He comes to Maxxsonics with nearly a third of a century of experience... Read more