Diamond D300.4 User Manual

Diamond Audio warrants this product to be free from defects in material and workmanship 

for a period of one (1) year from the original date of purchase provided it was purchased from 

an authorized DAT retailer within the United States. However, if this product is installed by an 

authorized DAT retailer, the warranty period will be extended to three (3) years.

This warranty is valid only to the original purchaser and is not extended to owners of the 

product subsequent to the original purchaser. Any applicable implied warranties are limited 

in duration to a period of the express warranty as provided herein beginning with the date of 

the original purchase at retail, and no warranties, whether expressed implied, shall apply to 

this product there after. Some states do not allow limitations on implied warranties; therefore 

these exclusions may not apply to you.

This warranty gives you specific legal rights; however you may have other rights that vary 

from state to state.  If your Diamond amplifier needs service, defective merchandise must be 

returned to your local Authorized DAT dealer for warranty. Non-defective items received will be 

returned freight collect. Freight damage and returns are not covered under warranty. Include 

proof-of-purchase. Warranty expiration on items returned without proof-of-purchase will be 

determined from the manufacturing date code. You can confirm that a dealer is authorized 

for service by the display of a current authorized dealer window decal. Any questions can be 

directed to the Warranty Department at (480) 820-2075 This warranty is valid only if the product 

is used for the purpose for which it was designed. It does not cover: 

•

The cost of shipping this product to DAT’s Service Department

•

Damage through negligence, misuse, abuse or accident

•

Damage caused by exposure to water and/or excessive heat

•

Items scratched, dented, or physically damaged due to abuse

•

Items returned from unauthorized individuals or dealers

•

Items previously repaired by any unauthorized repair facility

International customers: please contact your International DAT dealer or distributor concerning 

specific procedures for your country’s warranty policies. If you are not able to locate your local 

distributor, please contact DAT for assistance at +1(480) 820-2075.

Specifications subject to change without notice.