Land Devices HP-2 Teardown! See what's inside! 

you rule

@@PacificNatureTV Thank you for your kind words! :)

I have been working with this circuit and have had some interesting results with it, this video unlocked a change that makes the output level much more useful in a pedal chain, going with 47k instead of the usual 91k for R3 as Land Devices does is a simple fix for what some people have complained about in the past. I also have added a bias control and switching between different types of clipping or bypass. There’s a lot of different takes and opinions about how to make an accurate reproduction and my take on it has borrowed from at least 5 different ways that are out there. It’s quickly become my favorite fuzz pedal and it’s definitely one that lends itself to writing great riffs!

@@spacewolf9585 That's awesome! :)

@@Lantertronics thank you, I grew up in the 70’s surrounded by electronics components, testing equipment that was probably used in WWII, and various repair and build jobs that my father was constantly working on, trips to radio shack were akin to trips to the toy store for me. I appreciate your series and how it focuses on so much of the technology that I interact with as a professional musician and producer. Would love to have a conversation about some of the more interesting things that are going on in the industry today.

Thank you!

Very cool I'll check that out. BTW, I saw the comment thermaniacs made on your video. I do have a different HP schematic that shows a 1nf cap in parallel with the clipping diodes. I assume that's the cap allegedly missing from the schem we showed. It's possible that cap was omitted on certain units, in other words both schems may be correct.

@@graybenchelec Ah, that is useful information!

Thanks!

I assume you're referring to the 22k resistor connecting the collector of the PNP transistor to ground. That resistor plays a small part in the larger transistor gain structure, which he shows at 5:01. It works with the 22k resistor at the top to bias the transistors closer to the center of their operating windows, giving them more headroom to create gain without unwanted clipping. Of course, both of these transistors being completely different, they have different operating windows, so them being connected together means that they can't be perfectly biased. This creates asymmetrical clipping when the gain is turned up, which is exactly what we see in the video. In the original circuit, there are hard clipping diodes right before the volume pot, one of them having a 4k7 resistor in series before the anode. This creates asymmetrical clipping as well, accentuating that super harsh and biased sound that the HP-1 is known for.

Thanks!

Thank you, noted!

Thanks!

I've got a pack of these left on my work from soviet times

Yep got them on the list, thanks!

It’s not that expensive of a pedal

@@PuttinOnTheRiffs Man, it's 220$

@@josearjona3728 yea. It’s a great pedal tho. Many pedals aren’t that involved and cost 200.

most dirt pedals are simple bud. These are hand assembled in California so it depends how much of a premium you put on that. You could make your own but it wouldn't cost that much less, especially if you factor in the hours. If you want a $30 plastic Behringer the option is there

First time hearing about guitar pedals? Only reason I started learning to put pedals together is because of the crazy prices some of these go for. It's bonkers man

Thanks!

ここにあります：peperspedals.bigcartel.com/product/rocket-sockets

@@graybenchelec ありがとうございます。

@@tetora3786 ノープロブレム

is it gooped, tho? where?

Which did you buy? I'm in the market for one, might just build a clone myself if I can't find something reasonable

@@wookiewhat Electrofoods Pig Pile. It's wild. Unfortunately they haven't made a run of them in a LONG time. I would check out the clubber lang from malaise forever!

​@@ohpotatoesandmolasses stealing... something that's no longer in production?

@@ohpotatoesandmolasses thanks for the tip on the Clubber Lang!