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DI Boxes

Cobra ADP-001 Passive DI Box

Code: ADP-001
In Stock
£16.95 inc VAT

Synq SDI1 Stereo DI Box

Code: SDI-1
3 In Stock
£44.00 inc VAT

Hum Eliminator Loop Isolater by Cobra

Code: ACA-016
In Stock
£17.95 inc VAT

Cobra Dual Passive DI Box

Code: ADP-002
In Stock
£18.95 inc VAT

Active DI Box

Code: DIA1
1 In Stock
£15.00 inc VAT

Passive DI Box

Code: DIP1
In Stock
£14.50 inc VAT

3.5mm Jack Ground Loop Isolator

Code: LOOP35
1 In Stock
£7.90 inc VAT

DI Boxes and Isolators

DI boxes are important for any musician, band or recording studio, they help in making connections between instruments, line level devices, mixers, amplifiers and powered speakers. There are two main types, passive and active. Both do the same job, but the active type can add gain to the system.

The main purpose of a DI Box is to:
1) Match input and output impedance, so correct levels are achieved. 
2) Allow for longer cable runs, by turning unbalanced signals to balanced ones, thus reducing interference. 
3) Isolate pieces of equipment from each other to reduce noise and hum.  

Passive DI boxes are handy as they do not need any form of power supply.  So, for example, a guitar can be plugged straight into the box with an unbalanced jack lead and connected to a mixer microphone input, via a balanced XLR lead, with no other connections are required. The long part of the lead can be balanced, reducing noise and hum and matching the mixer input correctly.

Active DI Boxes need some form of power, whether it be an AC/DC power supply, battery or power from the mixers phantom power supply. Since they have power other features can be added into their design, so a pre-amplifier circuit could be added to boost very low-level signals for example.

You can find in-depth information on DI Boxes & Isolators by viewing our technical guide..>>