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Where can I get an easy to use HPF...

Which one have you used?

I have the HPF+LPF unit. Looks like he has to make more! I'd imagine that the micro HPF with the bypass switch is more or less the same circuit in the HPF+LPF for less money. Honestly, I didnt realize how important a LPF can be for bass tone as well.

I replaced the fDeck HPF 3 that is also a great option, but a bit more limited in its function and the design was not as pedalboard friendly.
 
I have the HPF+LPF unit. Looks like he has to make more! I'd imagine that the micro HPF with the bypass switch is more or less the same circuit in the HPF+LPF for less money. Honestly, I didnt realize how important a LPF can be for bass tone as well.
LPF? Now I'm even more confused. I'm really looking for something that I can set and forget, but I'm seeing that this isn't possible huh
 
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I bought an fdeck series 3 . It had a set 12db hpf at 35Hz and another 12db that is adjustable from 35 to 140Hz . With the two filters it always has 24db cut below 35HZ and then you can pick where the next 12db filter cuts in from 35 to 140 Hz . I didn't want to have to use a wall wart power supply and the fdeck can be used with a battery or a power supply . I set mine on top of my PF 800 bass head and use a couple short cords into the effects loop . I have noticed a difference with the low end tightened up but still get impressive low end . I like it . I'm sure the Broughten would be great too .
HPF-Pre, updated December 16, 2018 - hpftechllc
 
This is the one I use.

https://www.broughtonaudio.com/product-page/always-on-high-pass-filter

It is brilliantly simple. The lack of numbers on the dial forces you to use your ears (which is what you should do anyway).

I usually don't use mine in rehearsal. But last night I threw it in front of my rig. Our keys player, also a sound guy with fantastic ears, didn't put me in the PA for the first time during rehearsal. He said while I was warming up "Your tone is so focused tonight I'm not going to ruin it by putting through our subs". He had no idea I had run the HPF.

Sure, HPF are a fad. They're "hip" right now. But sometimes fads show up for good reason. These things simply work. They function as advertised. Grab one and enjoy the results.
 
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JLepre,
Broughton also has an 'Always On HPF' or one that you can turn on/off with a footswitch. Very easy to use.
+1. I have this one and it's great. You dial in the HP frequency you like, and then you forget about it. Not expensive, does the job, but it does not come with a power adaptor so keep that in mind if you order one.