Contacting Sound United Customer Care

Table of Contents

Brands: Overview: Sound United General Support Boston Acoustics Bowers&Wilkins Classe Audio Definitive Technology Denon And Heos Marantz Polk

Brands:

Boston Acoustics
Bowers & Wilkins
Classe
Definitive Technology
Denon
Heos
Maranz
Polk

Overview:

Harman International acquired Sound United to oversee customer support for its brands. The acquisition was completed on September 23, 2025.
Below, you will find the product support contact information for each Sound United brand.

Sound United General Support

Phone: 800-654-6633
Sound United Support

Boston Acoustics

Email: partnerships@bostonacoustics.com

Bowers&Wilkins

Phone: 800-370-3740

Phone Hours:
Mon-Fri 9:00am-9:00pm

Bowers&Wilkins Product Support

Classe Audio

Phone: 877-930-1127
E-mail: csupport@classeaudio.com

International Support on the following website:
Classe Audio Product Support

Definitive Technology

Phone: 800-228-7148

Phone Hours:
Mon-Fri 9:00am-6:00pm EST

Definitive Technology Product Support

Denon And Heos

Phone: 800-497-8921

Phone Hours:
Mon-Sat 10:00am-7:00pm EST

Denon & Heos Product Support

Marantz

United States
Phone: 800-654-6633
US Phone Hours:
Mon-Fri 10:00am-7:00pm EST

Global
+44(0)1903 953580

Marantz Product Support

Polk

Phone: 800-377-7655

Phone Hours:
Mon-Fri 9:00am-9:00pm EST

Polk Product Support