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DC Audio 90.4k – 360w 4-Channel Amplifier

SKU DCA-90-4CH Categories , , ,



DC Audio 90 x 4 Amplifier

The 90.4 Competition series 4 Channel amplifier. This amp has a fully active crossover and lots of clean power for the SQ minded builds. It’s also fits installs where you may want to amplify your front stage and bridge the rear 2 channels to your sub stage and have a bass knob to control it. Versatility is what this amp is all about. The High-Quality parts and a HD heatsink make this amp one of the best on the market.

Output Power (RMS):

  • 4 ohm 90Wx4 @ 14.4 Volts
  • 2 ohm 130Wx4 @ 14.4 Volts
  • 4 ohm mono 250Wx2 @ 14.4 Volts
  • 500 Watts total power

Key Features:

  • Variable high pass filter
  • Variable Band pass filter
  • 8awg Speaker Connections
  • 4awg Power / Ground inputs
  • Input mode Switch
  • Class A/B
  • Fully Active Crossover

Full Specs:

DC Amp Model:90.4k
Input Sensitivity6V~0.2V
Frequency ResponseHz20Hz~20KHz
12dB / Octave CrossoverYES
CH1/2Subsonic Filter10Hz ~ 100Hz
Crossover50Hz(500Hz) ~ 5ooHz(5KHZ )
Multiplyx1, x10
Crossover Selector SwitchHPF / FULL / LP-BP
Bass Boost0~18dB
CH3/4Subsonic Filter10Hz ~ 100Hz
Crossover50Hz(500Hz) ~ 5ooHz(5KHZ )
Multiplyx1, x10
Crossover Selector SwitchHPF / FULL / LP-BP
Bass Boost0~18dB
Remote ControlYES
Frequency ResponseHz20-20Khs
Signal to Noise RatiodB105
Damping Factor200<
THD @ 4ohmsLess than 0.1%
Fuse RatingOn Board 80 amp
LED Status LightsPower and Protect
Heatsink Length14.00″/350mm
Heatsink Width9.38″/238mm
Heatsink Height2.35″/59.6mm


WARRANTY:LIMITED PRODUCT WARRANTY LENGTH OF WARRANTY DC Audio Products are covered by warranty for 1 year from date of purchase on parts and labor. This applies to the original purchaser only. Warranties are non-transferable. DETAILS OF WARRANTY From the date of original purchase and for the respective period, specified above. DC Audio agrees to repair or replace all DC Audio products, which are defective in material and/or workmanship. This warranty is not transferable and applies only to the original purchaser of the product. No Exceptions. It is DC Audio’s right to decide if a product will be repaired or replaced. All returns must be sent with an RA # on the outside of the box. Any and all products sent without a RA will be refused. An RA # can be obtained by calling DC Audio and requesting the number. Warranty claims must be accompanied by the original invoice to validate the warranty service. EXCLUSIONS This warranty does not apply with respect to the following: DC Audio’s warranty does not cover burned/open voice coils or lead wires, ripped surrounds or folded cones. These are all immediate signs of abuse/over powering. It does not cover products driven over their mechanical limits. Defects or damage caused by accident, fire, flood, and lightning or other acts of God. Defects or damage caused by abuse, misuse, or negligence. Products with voice coils that have failed due to excessive power levels or clipping, i.e. burned or open coils or lead wires. Damage caused during shipping or handling. These claims are made with the Freight Company. Accessories or anything else attached to or to be used with DC Audio products. Products that have their serial numbers removed or altered. Packing materials i.e. card board boxes, foam inserts, corners, peanuts, etc. Adjustments or alterations required for any reason. Items subject to fatigue through normal wear and use. Product, which has been altered or repaired by anyone other than DC Audio. RE-CONES All speakers, loudspeakers, subwoofers that have been re-coned by DC Audio will continue under warranty until the full 1 year warranty has expired. Any re-cone not performed at DC Audio by an authorized DC Audio worker is not covered under warranty. The end consumer accepts the responsibility and liability of knowing this speaker, loudspeaker, subwoofer no longer falls under DC Audio’s warranty program when the re-cones they purchased and/or the labor was performed by the end consumer. Amplifiers Amplifiers will not be covered under warranty if ran below their rated ohm load or if underpowered in any way. DC Audio has a “Recommended for Installation” section on each amplifiers web page. These need to be followed in order to ensure the amplifier will operate properly. Failure to do so can decrease the life of the amplifier and void your warranty.

Additional information

Weight15 lbs
Dimensions20 × 20 × 4 in

DC Audio 90.4k – 360w 4-Channel Amplifier