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Bass DIs with built in HPF

manchego_eggo

manchego_eggo

Supporting Member
Jun 28, 2019
1,787
2,686
Brooklyn, NY
#1
Hi, I'm trying to build out a list of all bass DI pedals with a built in HPF, because I couldn't find one on TB. What am I missing here?

Bergantino Super Pre
Broughton HPF-DI
Broughton Messenger (all versions)
Broughton Studio One
EBS Stanley Clarke Acoustic Preamp
Fishman Platinum Pro EQ/DI
Genzler Magellan Pre
Mesa Subway+
Source Audio Zio Bass
Sushi Box Finally
Sushi Box Neptunium
Sushi Box Venus
Tech 21 Q Strip (fixed)
Tech 21 XB Driver
Radial Bassbone
Radial Firefly
Radial PZ-DI
Radial PZ-Deluxe
 
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#2
Broughton HPF-DI

IMG_2955.jpeg


Broughton Studio One
IMG_0791.jpeg
 
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#10
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#11
Quick question regarding this:
Normally a HPF is used to control the lows going to a stage rig to remove inaudible freq's so as to help the speaker work more efficiently and not soak up amp power.
What advantage would having a HPF in a DI bring? It seems to me that you would NOT want to filter those freq's when passing a DI signal to FOH because you'd effectively be throttling the subs. It also seems that if the the DI was being used for recording or an IEM rig you could simply apply a HPF at the software interface.
Just curious as to why one would desire a DI with a built in HPF?
 
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#12
ImTheOnlyOne said:
Would those with a cab sim instead occupy their own sub-category?
Two Notes ReVolt's cab sim (on its DI out only) acts like an L/HPF.
Click to expand...
eeyorebass said:
The third graph in this post shows the frequency response with AGS on: https://www.talkbass.com/threads/ag...-500w-megathread.717712/page-92#post-13429692

It's not quite steep enough to be called an HPF, I think (it's about 3db per octave if I'm reading the graph right). It falls more into the "cab sim" camp in actual use, IMO.
Click to expand...

I'm not sure that a cab sim that may imitate a HPF would make the list IMO. If there's enough revolting in the thread against this opinion, I'll change it,
 
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#13
BaltBass5 said:
Quick question regarding this:
Normally a HPF is used to control the lows going to a stage rig to remove inaudible freq's so as to help the speaker work more efficiently and not soak up amp power.
What advantage would having a HPF in a DI bring? It seems to me that you would NOT want to filter those freq's when passing a DI signal to FOH because you'd effectively be throttling the subs. It also seems that if the the DI was being used for recording or an IEM rig you could simply apply a HPF at the software interface.
Just curious a to why one would desire a DI with a built in HPF?
Click to expand...

I think it's audible. I have my HPF engaged even when I'm playing using a DI output at home and it definitely improves the clarity, which in turn, I think would be incredibly beneficial for somehow who's working sound.
 
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#15
#16
Radial PZDI.

This is supposedly a variant of the J48 that is optimized with some different features to better cope with acoustic instruments equipped with piezo pickups. It has switchable input impedance (220K, 1Meg, 10Meg). The Thru can be toggled between parallel and buffered, so the input impedance of the amp does not load down pickup. Variable HPF (5-500hz) and 3kHz LPF. Also has polarity switch and -15dB pad.

I prefer the 1Meg setting with my Yamaha TRB6P, but I doubt I would be able to hear the difference in a live setting.
 
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#19
It's not 'bass specific' nor is it the newest flavor of the month, but the Radial FireFly tube DI has a built in low-cut filter. Very popular among a lot of doublers. I've had one for at least a decade now and dig it. Also, the Radial ToneBone PZ Deluxe. It has a switchable low-cut shelving filter that I find useful. It's my main double bass preamp and DI these days.
 
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