Here is some more info:

BX1500D

Brutus Series Amplifiers

500W x 1 @4ohms
1000W x 1 @ 2ohms
1500w x 1 @1ohm
Cross over Network
4 Gauge power Connect
Sub sonic Filter

D-Class Mono Blocks

Hifonics is pleased to introduce the new Brutus series for 2003!
The name says it all. The Brutus D-Class Series are big mono amplifiers for the ultimate in ground pounding Hifonics performance.

Designed in the same heat sink as our Zeus Series, the Brutus amplifiers match perfectly with Zeus. Illumination, Ultra-Fi MOSFETS, EVXP Power and D-Class efficiency all work in concert to provide you with the ultimate system.

With three amplifiers to choose from, you are sure to find the perfect choice for your vehicle.

Bass Remote

HFR-1 bass remote controls bass gain from a remote location. Includes a 18' cord and the HFR-1 control. Also features "On" LED and "Diagnostics" LED.

Additional Features

New Hifonics Twentieth Anniversary Heat Sink Design
Illuminated Hifonics Badge
Illuminated Maxxsonics "M"
Bass Remote with Blue LED Power On & Diagnostics Indicator Included
D-Class Design
Ultra-Fi MOSFETS
Zeus EVXP (Exponential Vari-Power Supply
SPC - Simpatico Coil Design
HSMD - Hifonics Surface Mount Design
Fully Adjustable Accu-Cross Crossovers
PWM MOSFET Power Supply
Line Output for Amplifier Daisy Chaining
Variable Bass Equalization
Variable Sub-Sonic Filter
4 Gauge Power Connectors
Additional High Speed MOSFET Output Devices
Maxi-Fuse
Power From The Gods Included