The I-Tech 4x3500HD from Crown Audio is a high-performance power amplifier designed for professional applications. The amplifier has a sleek rackmount enclosure packed with innovative technologies that provide world-class performance and ease of use. Patented Class-I circuitry provides efficient use of power to keep current draw low while still providing powerful audio output.

Onboard OMNIDRIVEHD DSP processing is built-in and uses 24-bit / 192kHz Cirrus Logic A/D and D/A converters, along with FIR and IIR filters for a high level of audio performance. A front-panel USB port allows you to easily transfer DSP settings from a computer to the amplifier. For connection to virtually any sound system, the amp sports analog and digital XLR inputs and outputs, as well as Speakon and Binding Post outputs. An Ethernet port supports TCP/IQ, HiQnet, and CobraNet, and is compatible with standard 100Mb Ethernet hardware.

The amplifier is kept cool by variable-speed fans with front-to-back airflow to keep system components running reliably. Other useful features of the amplifier include Sweep Load Monitoring with system-level diagnostics, a bright LCD screen for easy navigation, and a true global power supply, allowing you to operate at full power no matter where you go.

Patented Class-I Circuitry    OmniDrive HD DSP Processing    24-Bit / 192 kHz Cirrus Logic Converters    Ethernet Capability    Front-Panel USB Port    Analog and Digital XLR I/O    Speakon and Binding Post Outputs    Global Power Supply

The sleek rackmount chassis fits into any standard equipment rack for easy installation

Patented 5th-generation Class-I circuitry provides terrific efficiency for strong performance with a low power draw

Built-in BSS OmniDrive HD DSP processing and 24-bit / 192 kHz Cirrus Logic SHARC converters, along with FIR and IIR filters provide ultrasmooth performance

A front-panel USB connector lets you connect a USB drive to quickly transfer DSP settings that were created in a computer

The amplifier has analog XLR inputs and outputs, as well as AES/EBU digital XLR inputs and outputs. Speakon and Binding Post outputs are also provided

An Ethernet port supports TCP/IQ, HiQnet, and CobraNet, and is compatible with standard 100Mb Ethernet hardware

Front-to-rear cooling fans have true tachometer feedback for precision control of thermal performance

Sweep Load Monitoring (SLM) technology provides system-level diagnostics

The bright LCD display allows you to quickly set up and monitor the amplifier

The global power supply ensures your ability to have peak performance anywhere in the world

Related Questions and Answers

Q: 1. Is this item 120 volts?

A: Yes, the Crown Audio XLS 1002 Stereo Power Amplifier that is sold by B&H is rated for 120 volts.

Q: 2. What is the actual amperage draw for this amplifier?

A: At this time, that specification is not listed by the manufacturer.

Q: 3. How loud is this amp, I have 2 18" subwoofers at 4ohms running indoors?

A: This amplifier delivers 775 watts of clean power at 4 ohms. Actual volume, or SPL, will depend largely on the speakers themselves, but that is quite a bit of power being driven to 18" subs in an indoor setting.

Q: 4. Is this Rms power or max power?

A: The wattage figures given for the Crown Audio XTi 4002 Power Amplifier are peak power levels, not RMS.

Q: 5. Will this work in Australia which is 240 volts?

A: The Crown Audio XLi 3500 Stereo Power Amplifier that we sell is rated at 120V AC, 60 Hz for use in North America. However, you can use a step-down transformer to enable powering at 240V.

Q: 6. The ratings for output is that RMS watts?

A: No that is peak watts.

Q: 7. Does it do summing in bridge mode to thru both channels from satellite unit to subwoofer unit?

A: No. When using the Crown Audio XLS 1002 Stereo Power Amplifier in bridge mode, the power of both amp channels is summed into a single channel, so only one output is available.

Q: 8. what will be the RMS wattage be with 6 ohm speakers, eg, cerwin vega xls 15 ?

A: Crown has not provided wattage ratings for 6 ohms, but they do list ratings for 4 and 8 ohms. We can use the specs listed for peak wattage to calculate RMS wattage at 4 and 8 ohms. 6 ohms is going to be right in the middle so you can get a better idea of how it would perform with your speaker. At 4 ohms, the XLS 2502 is rated at 775W per channel and 2400W bridged for peak power, which works out to approximately 550W per channel and 1700W bridged for RMS power at 4 ohms. At 8 ohms, the XLS 2502 is rated at 440W per channel and 1550W bridged for peak power, which works out to approximately 310W per channel and 1100W bridged for RMS power at 8 ohms.

Q: 9. Can I stack one on top of the other with heating problems?

A: It is recommended to leave at least 1u of space between amps to reduce potential overheating issues.

Q: 10. Is that 775watts at hz or khz?

A: Neither. The power rating for an amplifier is not related to the frequency response. The 775 Watt power rating for the Crown XLS 2502 Stereo Power Amplifier is for each channel when the amp is operating at 4 Ohms. This means the amp will deliver 775 Watts to each channel to drive a 4 Ohm speaker. The maximum power the amp can output will vary depending on the impedance of the speakers that are connected. With an 8 Ohm speaker the amp delivers 440 Watts per channel and with a 2 Ohm speaker the amp delivers 1200 Watts per channel. When speakers with lower impedance ratings are use the amp will deliver higher amounts of power.