By using a higher voltage for the preamp drives we overcome the internal loss of the transistors, making the channel operate like the The balanced inputs will accept speaker level input from most head units. Internal balanced line conversion will deliver balanced output after the RCA’s are connected. Balanced line carries 4 channels of signal. Remote level control selectable for front or rear. Stereo gain controls allow prefect level matching. Input mode switch for total control of the signal you are sending to the amplifier section. Linear rate transistor heatsink clamps hold the devices with a consistent pressure. All parts change in both specification and dimension as they heat up. As the transistors heat up they are held with a consistent pressure. This helps keep the heat transfer to the chassis consistent for all the parts. Keeping them as close to the same temperature as possible improves linearity and THD. 12dB or 24dB slopes on both highpass and lowpass. Frequency range from 30Hz to 5500Hz on all crossovers. All channels are bandpassable. Bass Boost is adjustable for frequency and level. VOP power supply delivers regulated power to all the low voltage components in the input stage and crossovers. By separating the high voltage and low voltage power supplies we can significantly reduce the noise in the input section and improve the overall signal to noise ratio. Sanken output transistors drive the output stage. These Darlington outputs are used world wide in the finest audio equipment and have a reputation for low noise and THD. Speed controlled fan is located at the center of the heatsink consistently cooling the chassis dramatically extending the running time before thermal shut down. 1 Congratulations! Thankyou for purchasing an ARC Audio Signature Edition amplifier. This amplifierwas designed by RobertZeffto the highest standards and using only the finest components. No compromises were made atany point in the design or manufacture of this product. "This is the Finest Amplifier I have Ever Made" Acaris the most challenging place foran amplifier. The battery voltage is constantly changing and full of noise. It has it operate in an extreme range oftemperature. The signal from the headunit passes every noise producing device in the car before reaching the amp. It's no wonder people are so often disappointed with the end result. No one understands these problems better then we do and no one has more experience engineering am amplifier to work properly in this very challenging environment. Warning We build all ARC Audio products to play at high volumes for extended periods oftime. Howeveryourears are not designed for high volume listening. This product can easily generate volumes that can permanently damage your hearing. Weurgeyou to limit your exposure to very high volume sound. You may also find your state has laws governing the volume ofan audio system in a car. Please be aware of all local and state laws in your area. A properly tuned and operated audio system will deliver years ofenjoyment when used properly. ARC Audio and RobertZefftake no responsibility for any personal lose, damage or injury associated with the use of this product. Installation Instructions ARC Audio Signature Edition Amplifiers are designed for easy installation in your vehicle. To ensure proper operation ofyour new purchase, please follow the suggestions we have listed below: Warning Please check the suitability ofthe installation location before you begin. Do notcut any of the car's structure. Pay close attention to what is behind the panels or carpet. Often the manufacture will hide wires, computers or other electronic devices in the exact areas you wish to install in. Ifyou do not have experience with automotive electrical and mechanical systems contact a professional installer. Paying a qualified installer is almost always cheaper then paying a dealership to repairyourcar. Finding a Suitable Location for the Amplifier The amplifier must be securely mounted to a solid surface. Please selecta dry location in the trunk or passenger compartment only. Do not mount the amplifier to any area that may have excess vibration (like the subwoofer box). Position the amplifier in an area that receives sufficient airflow for proper heat dissipation. Supplying Enough Power The Laws of Nature Youramplifier Does NOT make power. It converts power, or current,from your cars electrical system and turns it into a high power musical energy. Ifthe amp can't get all the power it needs it will not produce its full output. Your ARC Audioamplifierwill produce full outputfor longer then other amps on the market today. Ifthe Voltage or Current drops too low even ouramplifiers will drop below theirrated output. Makesureyourvehicle charging system is in good working order. Any Hi-Performance audio amplifier will increase the demand on youralternatorand battery. Ifyouareunsure haveyour charging system tested bya professio...