A reamp box like the L2A solves this problem by isolating the grounds with a transformer. Through the magic of electro-magnetism, the transformer allows signal to pass from the input to the output without a direct connection between their grounds..
Correspondingly, can you Reamp without a Reamp box?
You can reamp without a box but you lose a little bit of the signal, and if this is your first time recording guitars you may not notice the difference, especially with high gain guitars.
Also Know, what does Reamp mean? Re-amping
Likewise, people ask, how do you use a Reamp box?
To get started, set the output of the track you want to reamp to an extra output on your interface, patch the output from the interface to the reamping box, connect the reamping box to the amp, and you're ready to rock.
What does a DI box do?
Direct boxes are often referred to as “DI” boxes. This stands for “Direct Injection” as their main purpose is to convert unbalanced and/or high impedance instrument signals into a format suitable for direct connection to a mixing console's mic input - without the use of a microphone.
Related Question Answers
Can you use a DI box in reverse?
A passive DI can work in reverse, but an active DI will not. Even then, a passive DI may compromise the sound quality because the transformer inside will be operating at line level instead of mic level, a much greater signal level than it is designed for.Can you Reamp with a DI box?
You can use any passive direct box as a reamp box with great results. Just make sure you attenuate the signal going into the "output" of the DI box by roughly -30 dB. Use your ears.Can a preamp be used as an amp?
No, a preamp can't be used as an amp because they do different jobs. A preamp boosts weak signals to line level, whereas an amp boosts the line level so it can be heard through speakers. Although their jobs are similar, you couldn't replace an amp with a preamp, or vice versa.Can I plug an electric guitar straight into mixer?
The answer is yes and no! You can plug a guitar or bass into your mixer inputs and it will work (make sure the 48v phantom power is OFF!) Guitarists have been plugging their guitars "straight in" almost since the beginning of time.Do keyboards need DI box?
A DI box inherently contains a transformer and can be used to provide galvanic isolation, preventing ground-loop issues. Running a keyboard via a DI box has a number of other useful benefits. For example, some very early electronic and electric keyboards do work better into the very high input impedances (ie.Do I need a passive or active DI box?
The most obvious difference is that passive DI boxes don't need to be powered. Active DI boxes require a power source, usually batteries or phantom power over an XLR jack. An active DI box includes a preamplifier to provide a stronger signal and higher input impedance.Is a DI box a preamp?
DI boxes (unlike a preamp) are not intended to raise the signal level from the pickup significantly, rather, in most cases, they reduce it. This does not matter much as they are intended to be plugged into the balanced microphone level input of the mixing console, which normally has plenty of gain in reserve.Does a DI box reduce noise?
Ground Lift Although direct boxes can do wonders to reduce or eliminate the external noise that plagues unbalanced instrument-level signals, even balanced audio equipment can be susceptible to hum and buzz caused by ground loops.Do electronic drums need a DI box?
Various electronic drums and mixers have a wide variety of inputs and outputs, without knowing what you are using it is impossible to say what is or is not required. If you are not running the signal more than 25 (or so) feet, you do not need direct boxes if your mixer has enough gain on the 1/4" inputs.Do I need a direct box?
In short, then, a direct box is a great idea when you need to plug a passive instrument into a mixer or microphone preamp. It will shield your signal from unwanted noise while preserving the detail in your tone—especially the high frequencies—and allowing more volume.Do you need DI box for bass?
So the rule of thumb is that for a high-output bass that already has a built-in buffer, a passive direct box will likely do a great job—the bass will produce the drive. On the other hand, for a low-output passive bass, an active DI will leave the bass sound unaffected while generating the drive for the PA system.What is a passive DI box?
Passive and Active Direct Boxes : How They Should Be Used. Topics: di box, Equipment Usage, mixing guitars, mixing piano, speakers, stage By: Chris Huff. A DI unit, DI box, Direct Box or simply DI is an electronic device that connects a high impedance line level signal that has an unbalanced output (a.ka. 
