DI Clicking Issue?

Hi,
 
I (occasionally) use a Beringer DI-100. I actually own 2.  I was recording the other day and noticed an occasional "click" in the recorded track.  The issues seemed to be timed with some transients in the recording (dry electric guitar).  At first I assumed it was just a crappy Beringer product--but then I tried my other one.  Same thing.  This struck me as odd--both Beringer DIs glitching in the exact same way? 
 
So, here's my question--can anyone help me rule out the Beringer as the issue before I drop some money on a Radial J48?  If I can't rule out the Beringer, than I'm fine with buying the J48.  But, I'd hate to buy the J48 only to find that the issue was something else.  In this case, the DI-100 went to a Firestudio Mobile, which supplied the phantom power.  Typically, when I use the Firestudio to provide phantom power, I use the AC outlet as well.  My fear is that the firewire won't actually supply a true and consistent power.  In this instance, the Firestudio was plugged into AC.  I record into Sonar Platinum.  I use zero plugins when recording (I save plugins for a separate mixing project). 
 

No clicks. I'm interested in the DI because the tracks seem to come out better. I'm not sure if it's because the amp is in the room with me (so I play a little different), the impedance is just right because of the amp, or both. Whatever the reason, I'm typically less happy with my tracks when they go straight to the FS.

You know ...  I'll give that a shot. Its supposed to be able to handle an amp's output--so I never considered that a passive pickup would need attenuation.  I seem to remember having to crank up the input on the FS, even with the attenuator out ... not a lot, there is more it could do.  I'll play with it.  It will be a little while before I get the chance, though. 

That's exactly what I'm trying to do.  Eliminate causes.  See if anyone here might notice something I'm overlooking--like a pad.  Thanks for the thought.
 
No stomps in the signal chain, though. 

 I'll give that a shot. Its supposed to be able to handle an amp's output
 
Did anyone else see this? 
DI boxes are for guitar input not amplifier output, no wonder it was clipping. 
Radial does make a special DI for amp speaker outputs. 
There's no advantage to using a DI over plugging in directly to your interface. 
DI boxes are for converting hi impedance to low so you can send a balanced signal over a longer run of cable. If your sitting within 20' of your interface there's really no point in doing this. Most interfaces have a hi z input. 
But if you want the tone from your amp..
Put a mike on the speaker ( best) or use said Radial ( or?) speaker emulator box. 
Some amps now have pretty good speaker emulator outputs ( Vox , Blackstar, Line 6 ) 

I looked at the info on the Beringer DI-100 and it would seem to be a standard active DI with no mention of it being able to take a speaker load.