DIY Recording Guys · Vadim Kharaz and Benjamin Hull

64: DI Deep Dive and Shootout

April 12, 2021·48 min·4 clips

Ben discovers his active DI box outperforms both his interface and a passive DI for aggressive guitar tones.

The room starts loose. Vadim and Benjamin check in on pajama pants, video recording, and the odd extra job of editing more than left and right audio. Then the gear talk tightens up. The question is simple: when does a DI box fix an actual recording problem? Guitarists get the first case. A DI can split one signal into parallel paths, including the kind of two-amp setup some players chase. Signal splitters come up too, but the hosts keep the difference clear. A DI can do more than send one guitar to two places. Interfaces are next. If an interface does not have a high-Z input, the DI gives the guitar a better match and feeds the preamp more comfortably. They translate high-Z without making it precious. Z means impedance, and a high-impedance input is where a guitar can theoretically plug straight in. The fun starts when the interface already has that option, because then the old rule needs a listen instead of a shrug. The claim is blunt: for best quality, never record guitar straight into the interface, even through high-Z. Benjamin brings up a friend's example, with videos where a two thousand dollar Universal Audio interface sounds worse than a cheaper DI path. That sets up the shootout. Vadim and Benjamin are not worshipping the box. They are asking whether it really changes the tone. The episode stays friendly, even when impedance gets dense, because it feels like two working engineers comparing notes for a DIY guitarist trying to make a cleaner call with the gear already nearby.

As heard by us

A clear, practical DI-box discussion for guitar recordists wondering when an interface input is enough.

DIY Recording Guys gives DI boxes the kind of patient, shop-floor treatment home recordists actually need. Vadim Karaz and Benjamin Hull start from a familiar guitar question: if an interface already has a high-Z input, does a separate DI still change the result enough to…

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Why you'd press play

If you're choosing between a DI box and your interface's high-Z input, start here.

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