A distribution block acts as the "nerve center" of your amplifier installation — a single power wire runs from your battery to the block, with smaller wires branching off to your various components. It's a more efficient way to run your wiring, and it also makes it easier to troubleshoot problems.

The DBX30 power distribution block allows you to connect as many as three amplifiers to a single power source. The Power Ring input lets you connect any gauge wire from your battery to the block, and you can run up to three 1/0-gauge cables to your amplifiers. You'll also need to place in-line fuses between the distribution block and your amps.

Streetwires coats their solid brass distribution blocks with corrosion-resistant, Diamond Plate Nickel for outstanding current delivery and low power loss. Nickel-plated brass contacts promote maximum signal transfer, and a clear, impact-resistant cover protects your connections. You can also use this block to ground your multi-amp system. Warranty: lifetime.

Be the first to review this product
Great Gear Giveaway

Submit a review and then enter to win a $350 rewards card

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
  Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left

Hands-on research

What's in the box?

Download owner's manual

  • Power distribution block with one 1/0 gauge input and three 1/04 gauge outputs

Product Research


Overview: This Streetwires DBX30 Power Distribution Block allows you send battery power to multiple amplifiers. It can also be used to combine the ground wires of multiple amplifiers to a single grounding point.

Materials: This distribution block is made of forged brass for maximum current transfer. The block is mounted in a strong polycarbonite base and clear cover. The slim profile allows you to mount the block in a concealed area.

Inputs and Outputs: This distribution block has a single 3-way ( 2 side and 1 rear) input  that will accept up to 1/0-gauge wire. The single 3-way input gives you maximum mounting flexibility by allowing you to connect the input wire straight on or to either side. The direct set screw connections provide superior clamping and low resistance. The set screws can be tightened/loosened with a 5mm Allen wrench (not supplied). The block also has 3 front-mounted outputs that will accept up to 1/0-gauge wire. These set screws also require a 5mm Allen wrench.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.