Product highlights

2-in, 8-out power and ground distribution block 

dual 1/0-gauge positive wire inputs 

dual 1/0-gauge ground wire inputs 

four fused 4-gauge positive wire outputs 

four 4-gauge ground wire outputs 

four relay-controlled 12-volt remote turn-on signal outputs 

Blown Fuse Indicator LED for each output 

fuses not included 

fits four 50A-150A MANL fuses for 4-gauge wiring 

mounting locations for three spare MANL fuses 

connectors use Torx® screws with Gate Lock technology 

anti-short sub-cover electrically isolates the ground connections 

dimensions: 7-3/8"W x 1-5/8"H x 4"D 

warranty: 1 year 

What's in the box

• 4-Way distribution block for both power and ground 
• Plastic cover (attached) 
• Three 60A MANL 'spare' fuses (installed) 

About this item

Written by Crutchfield's Buck Pomerantz

A big power block for big systems

If you're planning on installing a super-powerful sound system, the VBDB4 distribution block from T-Spec will manage and secure those critical power and ground wires your amplifiers depend on for optimum, reliable, and safe operation. This heavy-duty wiring block combines two 1/0-gauge inputs and distributes them out to four 4-gauge outputs — with a maximum input capacity of up to about 600A, supporting a total power output of about 6,000 watts RMS from up to four amplifiers. A relay-controlled remote 12V amplifier turn-on control signal is included with each pair of power and ground output connections.

Note: Fuses not included. For more information on amplifier power wiring, check out our Amplifier wire gauge chart. The VBDB4 features a Blown Fuse Indicator LED for each output, plus onboard storage for three spare fuses — making replacement fast and convenient after trouble is taken care of.