Description
Arc Audio KS 300.4 V3 KAR Series Class G/H Amplifier
Class G and Class G/H amplifiers offer the best of all possible characteristics. Power output, distortion, efficiency, heat, noise, size are all class leading specs with this design. But why does this class of amplifier perform so well? It's built for music, not test tones or noise. When an amplifier is playing music, even at full volume, due to its dynamic nature, it is only working above 1/2 power about 10% of the time. You only need full power during the very loud passages like the impact of a drum or the pluck of a bass string. The rest of the time your 700-watt amp is making less than 350 watts. It's like having 2 amps in one. A 400-watt amp is much smaller and produces a lot less heat. Then, in a fraction of a second, your amp becomes an 800-watt monster that is ready for any musical challenge. The trick to making this work is in striking a balance between switching the high-power section on and off.
4-Channel Full Range Amplifier
Advanced Microprocessor Control System
Non-Digital Class G/H Switching Design
Code Based Flashing Diagnostics
Designed By Robert Zeff
Protection Against: Reverse Voltage, Over Voltage, Speaker Short, and Thermal Overload
Can Drive Highly Reactive Loads
Optically Isolated Mosfet Power Supply
Quiet Internal Fan Cooling
4-Channels @ 4 Ohms: 120 Watts
4-Channels @ 2 Ohms: 190 Watts
2-Channel @ 4 Ohms (Bridged): 380 Watts
Frequency Response: 5Hz - 50kHz
Crossover Range: 55Hz - 5500Hz
Bass Boost: 18dB @ 45Hz
S/N Ratio CEA2006 @ 1W: 95.2dB
S/N Ratio @ Full Power: 115.0dB
Input Sensitivity (Low): 200mV - 3.5V
Max Current Draw: 85A @ 800 Watts 1% THD
Idle Current: 1.14 Amp
Fuse: 3 x 30 Amp
Dimensions: 11.25(L) x 8.0"(W)x2.375"(H)
Class G and Class G/H amplifiers offer the best of all possible characteristics. Power output, distortion, efficiency, heat, noise, size are all class leading specs with this design. But why does this class of amplifier perform so well? It's built for music, not test tones or noise. When an amplifier is playing music, even at full volume, due to its dynamic nature, it is only working above 1/2 power about 10% of the time. You only need full power during the very loud passages like the impact of a drum or the pluck of a bass string. The rest of the time your 700-watt amp is making less than 350 watts. It's like having 2 amps in one. A 400-watt amp is much smaller and produces a lot less heat. Then, in a fraction of a second, your amp becomes an 800-watt monster that is ready for any musical challenge. The trick to making this work is in striking a balance between switching the high-power section on and off.
4-Channel Full Range Amplifier
Advanced Microprocessor Control System
Non-Digital Class G/H Switching Design
Code Based Flashing Diagnostics
Designed By Robert Zeff
Protection Against: Reverse Voltage, Over Voltage, Speaker Short, and Thermal Overload
Can Drive Highly Reactive Loads
Optically Isolated Mosfet Power Supply
Quiet Internal Fan Cooling
4-Channels @ 4 Ohms: 120 Watts
4-Channels @ 2 Ohms: 190 Watts
2-Channel @ 4 Ohms (Bridged): 380 Watts
Frequency Response: 5Hz - 50kHz
Crossover Range: 55Hz - 5500Hz
Bass Boost: 18dB @ 45Hz
S/N Ratio CEA2006 @ 1W: 95.2dB
S/N Ratio @ Full Power: 115.0dB
Input Sensitivity (Low): 200mV - 3.5V
Max Current Draw: 85A @ 800 Watts 1% THD
Idle Current: 1.14 Amp
Fuse: 3 x 30 Amp
Dimensions: 11.25(L) x 8.0"(W)x2.375"(H)
Used Frequently Asked Questions
- What does used mean? Used products may be unused customer returns that are essentially "new" items, or they may be previously installed products that were returned under warranty or during our return policy period.
- What is the warranty? All of our used items come with a 90-day warranty.
- What's it look like? All of our used items are inspected and graded by our returns team at our facilities. They will test them and grade them to one of four standard gradings: Used Open Box, Used Very Good, Used Good, and Used Acceptable. Please see the following descriptions of each grade - also note that if an item falls under ANY of the criteria for a certain grade, even though the rest of the product is better, we will give it the lowest grade.
- Used Open Box An item in perfect working condition. Original protective wrapping may be missing, but the original packaging is intact and in good condition with minor damage possible. Instructions are included.
- Used Very Good A well-cared-for item with limited use, remains in good working condition. The item may show some limited signs of wear,small scratches,cosmetic blemishes. Item may arrive with damaged packaging or be repackaged and could be missing some accessories.
- Used Good The item shows wear from use, remains in good condition and functions properly. May have damaged packaging or be repackaged. It may be marked, have identifying markings on it, have minor cosmetic damage. It may be missing some parts or accessories.
- Used Acceptable The item is fairly worn but continues to function properly. While repackaged; signs of wear can include aesthetic issues; scratches, dents. The item may have markings on it or show signs of previous use. Item may be missing some parts or accessories.
- Have more questions? Call us, send us a chat, or an email. We'll be able to answer any additional questions you may have.