Diamond D600.4 User Manual

Thank you for choosing a new Diamond Audio amplifier. Diamond Audio amplifiers are engineered and produced with the highest quality materi-
als and incorporate the latest technology. We think you will find your new Diamond Audio amplifier meets or exceeds your expectations and 
provides excellent value.

Properly installed, your new Diamond Audio amplifier will provide years of high quality sonic reproduction. Before installing the amplifier in your 
vehicle, please read this entire manual carefully. It is required reading for the protection of your vehicle and for the maximum performance of 
your mobile audio system. All Diamond Audio amplifiers have been extensively tested and “burned-in” for maximum reliability.  If after reading 
this manual, you still have questions regarding this product, we recommend that you contact your authorized Diamond Audio dealer for expert 
installation assistance. 

If you need assistance with repair or warranty, detailed warranty and return/repair information is listed in the back of this manual. Be sure you 
record your serial number, model number and date of purchase for your amplifier as this will be necessary for any returns.

Please Practice Safe Sound!

Continuous exposure to sound pressure levels over 100 dB may cause permanent hearing loss. High powered mobile audio systems may produce 
sound pressure levels well over 130dB. Use common sense and practice safe sound.

• Pulse Width Modulated (PWM) MOSFET Switching Power Supply

• Up to 12 dB Bass Boost

• Extruded Aluminum Heatsink 

•Nickel Plated RCA Low Level Audio Inputs 

•Nickel plated, low resistance power and speaker connector blocks

• Power ON and Protection LED Lighting for Easy Diagnostics 

• Thermal, Short Circuit, and Overload (Low Impedance) Protection

• Chassis mounted ATC/ATO type automotive fuses (except D1000.1)

• Proudly Designed and Engineered in the USA

•Class AB Amplifier Topology

• Stable into 2 ohm Stereo Loads 

• Internal 12dB/Octave Variable High Pass or Low Pass Filter 

•  Hi-level inputs on D300.2 and D300.4

•  Pass -Thru  Line Output for Daisy Chaining Amplifiers

•  Bridgeable Output Capability (4ohms)

•Class D Amplifier Topology (Class AB on D400.1)

•Stable into 1 Ohm (2 Ohm on D400.1)

• Internal 24dB/Octave Variable Low Pass Filter (12dB on D400.1) 

•  Hi-level inputs on D400.1

•  Pass -Thru  Line Output for Daisy Chaining Amplifiers

•  Remote Level Control

•  D600.1 and D1000.1 are Sync capable

•  Subsonic Filter

•  0° or 180° Phase Control