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Post by Johnkenn on Nov 6, 2014 20:31:51 GMT -6
I mean - other than the gain...
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ericn
Temp
Balance Engineer
Posts: 16,099 
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Post by ericn on Nov 6, 2014 20:50:15 GMT -6
Simple answer yes !
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Post by svart on Nov 6, 2014 21:10:05 GMT -6
Yeah. Active DI's usually have very high input impedances, very much designed and working like booster pedals for guitars.
Passive DI's can't match that high impedance, so typically they have a more rounded off top end and different frequency spectrum due to the reactances of the guitar pickup and the DI transformer.
So yeah, they do sound different, but overall it's just a tone thing, one is not necessarily better than the other.
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Post by jimwilliams on Nov 7, 2014 9:38:21 GMT -6
It depends on the source impedance. A low impedance keyboard active output into a jensen DI transformer sounds very close to the original.
Run a passive P-bass and you will have high frequency attenuation from the primary loading. Run that same bass into a 2.2 meg input impedance active DI and those tops return, but you may loose some low end depth due to the powering and current available. It's common for a 48 volt powered active DI to loose some energy in the bass. An AC powered design usually avoids those losses.
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