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Rectangular car-audio distribution block with satin gunmetal finish

T-SPEC

T-SPEC VBDB4 Dual Input 4-Way Distribution Block

SKU CH-E9RX-G3X2X

Distributes dual 0/1 AWG power and ground inputs across four independently fused 4 AWG outputs with built-in relay, blown-fuse LEDs and spare fuses

  • Product typeDistribution Blocks
  • Dual 0/1 AWG inputs handle high-current power feeds
  • Four fused 4 AWG outputs protect each amplifier circuit
  • Built-in relay boosts turn-on wire current across all outputs
  • Anti-short sub-cover isolates ground terminals from shorts
  • Blown-fuse LEDs plus three spare fuses speed troubleshooting

Dual-Input Power Distribution Block

The T-SPEC VBDB4 accepts dual 0/1 AWG positive and negative inputs and splits them into four independent 4 AWG output sets. It is designed for car-audio installers who need to feed multiple amplifiers from a single heavy-gauge power run while keeping each circuit individually protected.

Brass Bus Bars with Anti-Short Cover

Solid 5 mm brass bus bars carry current between the inputs and the four MANL-fused outputs. A satin gunmetal finish resists corrosion, and an integrated anti-short sub-cover isolates the ground bar and terminals from accidental contact. The TPE-wrapped soft-touch cover adds a finished look and protects the terminals during routine maintenance.

Built-In Amplification Relay

An on-board relay boosts the amplifier turn-on wire’s current rating and distributes the remote signal across all four outputs. This single feature determines whether the block can drive multiple amp turn-on circuits without overloading the head-unit’s remote lead, making it the decisive specification for multi-amp installations.

How it compares

Measured against everything we stock in Amp Wiring Kits & Install Parts, at today’s prices. Recalculated every night.

Price $100.99
Pricier than about 90% of the 259 comparable items (median $12.99).

Specifications

Product
Product typeDistribution Blocks

Questions about this item

What wire gauge do the dual positive inputs accept?

Each positive input accepts 0 or 1 AWG cable, giving two large-gauge feeds into the block.

How much clearance does the block need for the TPE cover and fuse access?

Allow space for the soft-touch cover to close fully and for the three built-in spare MANL fuse slots to be reached without obstruction.

How is the amplification relay wired during installation?

Connect the amplifier turn-on lead to the relay coil terminals so the relay distributes boosted current to all four output circuits.

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