SKU: JH3004
Sold Individually

Jackhammer 300W 4 Channel Amplifier

Availability: In stock
$359.95 MSRP

High Fidelity Amplification

The JH3004 four channel amplifier powers high wattage speaker systems with headroom to spare, all without added distortion or over-heating during long hours of loud play.

Ask an expert Find a location

Easy Access Controls

The JH3004 is a high fidelity amplifier designed to drive high powered full range speakers. The top panel includes controls for both front and rear full range speakers including gain, crossover and frequency adjustment. The front panel location allows for easy adjustment after the unit is installed. This layout is simple and elegant, giving the JH3004 a sophisticated look with the convenience of easy accessibility.

Only What You Need

The JH3004 has the functionality to up to four full range speakers. The input section features high quality RCAs (front and rear) for easy connection to after market head units or processors. The Input Level selection is either Pre or Spk In so it can also be used with factory radios that don't have RCA outputs. The Auto Turn On feature is selectable, enabling the unit to turn on when it senses signal, eliminating the need to run a remote wire, or it can be turned on using a remote wire, the choice is yours. The unit can also be used in either 4-channel or 2-channel mode depending on the Input Mode selection.

High Quality Power and Speaker Connections

The JH3004 can accept up to a standard 4-gauge power and ground wire for optimal performance. The speaker terminals can accept up to 12-gauge speaker. The speaker connection terminal has two sets of positive and negative terminals for easy wiring, the JH3004 can play loads down to 2Ω. Both sets of connectors use set screw style fittings that ensure proper connection and continual signal transfer.

Dimensions & Details


  • A - Length:
    11.14" (283mm)
  • B - Width:
    7.61" (193.4mm)
  • C - Height:
    2.57" (65.2mm)


  • Description: 4-Channel
  • Topology: Class AB
  • 4Ω RMS Power Output: 60W X 4 Channel
  • 4Ω Bridged: 180W x 2 Channel
  • 2Ω RMS Power Output: 90W x 4 Channel
  • THD: <1%
  • Signal to Noise Ratio: 60dB
  • Frequency Response: 20Hz to 20kHz
  • Crossover: 40Hz to 250Hz, 12dB/Oct
  • High Pass Filter: 40Hz to 250Hz, 12dB/Oct
  • Maximum Input Signal: 10V
  • Height: 2.57" (65.2mm)
  • Width: 7.61" (193.4mm)
  • Depth: 11.14" (283mm)
  • Warranty Period: 24 months from date of purchase


  • Owners Manual - JackHammer Series Amplifier Owners Manual (36 pages)

Returns & Warranty

30-Day Money-Back Guarantee

At MTX Audio, we are serious about sound®. Therefore, if you are not "blown away" with your purchase, for any reason, you can return any items purchased directly from that are complete and like new within 30 days. Products purchased from authorized MTX retailers must be returned through that same retailer. Products purchased through non-authorized MTX retailers may not be returned.

About Returns
Warranty Information

MTX products purchased in the USA from an authorized MTX dealer are guaranteed against defects in material and workmanship for the period of time specified below, the warranty period begins the day the product is purchased by the end user. This warranty is limited to the original retail purchaser of product and extends only to products purchased from authorized MTX resellers. Product found to be defective during that period will be repaired or replaced by MTX at no charge.

About Our Warranty