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Alphasonik PMA4075A

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  • 4-Channel Class A/B Bipolar Power Amplifier
  • RMS Power Rating:
    • 75 watts x 4 chan. x 4 Ohms
    • 120 watts x 4 chan. x 2 Ohms
    • 230 watts x 2 chan. x 4 Ohms Bridged
  • Bridgeable
  • Tiffany-style input and ouput RCA jacks
  • Hour meter
  • Remote mount digital voltmeter
  • Heavy duty heat sink
  • High speed switching power supply
  • THD: 0.05%
  • S/N Ratio: >100dB
  • Frequency Response: 5Hz-50kHz
  • Variable Low Pass Filter: 50Hz-250Hz, 24 dB/oct
  • Variable High Pass Filter: 50Hz-250Hz, 24 dB/oct
  • Variable Subsonic Filter: Off-20Hz, 24dB/oct
  • Variable Bass Boost at 45Hz: 0-18dB
  • Variable Phase Shift: 0-180 degrees
  • Input Impedance: 10K ohms
  • 4-Way Protection Circuitry: Thermal, Short Circuit, Overload, and DC Offset
  • On board hook-up terminals
  • Dimensions: 21-5/8" L x 8-1/4" W x 2-1/2" H
  • 1-year SonicElectronix.com warranty
Power Specifications - Full Range Channels
RMS Power @ 4 ohms 75 watts x 4 channels
RMS Power @ 2 ohms 120 watts x 4 channels
RMS Power @ 1 ohm Not Stable
Bridged RMS Power 230 watts x 2 channels
Peak Power Output 920 watts approx.
Amplifier Specifications
Number of Channels 4
Total RMS Power Output 480 watts
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged 4 ohms
THD at Rated RMS Power 0.05%
Speaker Level Inputs No
Preamp Outputs 1 pair
High-Pass Crossover Frequency 50 - 250 Hz
Low-Pass Crossover Frequency 50 - 250 Hz
Subsonic Filter Off - 20 Hz
Signal-to-Noise Ratio 100 dB
Bass Boost 0 - 18 dB
Fan Cooled No
Fuse Rating 30A
Warranty and Return Policy
Return Policy Standard Return Policy
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Amplifier Wiring Kits
Get the wires you need to properly install and power your car amp.
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NVX XKIT44 NVX XKIT44
4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire 		$114.99
Stacking Hardware & Strapping Accessories
Use this stacking hardware to mount multiple amplifiers together for a clean, professional installation. Maximize your output with these accessories to strap your amplifiers together.
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XIX2025 Strapping RCA XIX2025 Strapping RCA
0.25 Meter (0.86 ft) Hyper-Flex RCA cable w/ Serpentine-Cut Nickel Plated Connectors 		$13.99
Speaker Wire
Improve the sound quality by delivering more power when replacing your factory wiring. High quality speaker will maximize your amplifier investment and system performance.
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NVX XWS1225 Speaker Wire NVX XWS1225 Speaker Wire
25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire 		$39.99
NVX XWS1250 Speaker Wire NVX XWS1250 Speaker Wire
50 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire 		$29.99
Kicker XW1220 Speaker Wire Kicker XW1220 Speaker Wire
12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install 		$39.95
StreetWires SCP1215BL - 12 AWG Speaker Wire StreetWires SCP1215BL - 12 AWG Speaker Wire
12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction 		$24.99
RCA Interconnects
You will need a good set of RCA interconnect cables to connect your amplifier to your head unit. Using high quality cables ensure the best sound possible by reducing unwanted noise interference, providing tight contacts, and utilizing the latest in cable technology.
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NVX XIV45 4-Channel RCA Audio Interconnect Cable NVX XIV45 4-Channel RCA Audio Interconnect Cable
5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology 		$23.99
NVX XIX45 X-Series RCA Interconnect Cable NVX XIX45 X-Series RCA Interconnect Cable
16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology 		$44.99
StreetWires ZN9 Series Interconnect Cable StreetWires ZN9 Series Interconnect Cable
16.4 ft. of 4-Channel RCA Cable with Rhodium-plated contacts and ZeroNoise construction for clear signal transfer! 		$99.99
Capacitors
Capacitors store energy for the amplifier to use on demand, thereby assisting in the elimination of dimming lights during peak power surges during use.
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Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max 		$99.95
Installation, Tools & Accessories
With our professional install card, you can have your amp installed by a pro near you, or you can purchase tools and do the install yourself.
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StreetWires FB4 StreetWires FB4
4 AWG / 4 Gauge Firewall Bushing 		$7.99
Kicker DB1448 (09DB1448) - Top of the Line! Kicker DB1448 (09DB1448) - Top of the Line!
Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs 		$29.95
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Testing and Performance
Optimize your system's performance with testing tools such as SPL meters, bass test discs and more!
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Scosche SPL Meter SPL1000F Scosche SPL Meter SPL1000F
Handheld boomSTICK measures your SPL range from 60 to 135 dB 		$24.99
AutoSound 2000 CD-104 AutoSound 2000 CD-104
The ultimate amplifier level setting disc used for evaluation of audio components 		$12.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement. 		$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components. 		$12.99

Product Summary

Manufacturer: Alphasonik
Model number: PMA4075A
Weight: 20.00 lbs
Internal SKU: pma4075a
Internal product ID: 4639