Important safety instructions
Notes on driver and firmware updates
We recommend using the latest DAC (digital-to-analog converter)
H D V 8 2 0
firmware for your headphone amplifier and the latest driver for your
operating system (MacOS), Windows).
DAC firmware and driver updates can be downloaded free of charge
U P D A T E
from the Internet at www.sennheiser.com/download or can be
obtained from your Sennheiser partner.
Intended use/Liability
This amplifier for dynamic headphones has been designed for music
reproduction from analog and digital high-end devices such as
SACD, DVD-A, Blu-ray or CD players or for the reproduction of high-
resolution music files from your Mac or PC.
This product is intended for private domestic use only. It is not
intended for commercial use.
It is considered improper use when this product is used for any appli-
cation not named in this instruction manual.
Sennheiser is not liable for damages to USB devices that are not con-
sistent with the USB specifications.
Sennheiser does not accept liability for damage arising from abuse
or misuse of this product and its attachments/accessories.
Before putting the product into operation, please observe the
respective country-specific regulations.
HDV 820 | 5