Heliodor overdrive

Build Rating
5.00 star(s)
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In this week's build report I'm taking a look at a pedal I had never played or really considered playing prior to building it...the Boss OD-3. This is a mistake on my part, as this pedal knocked a mainstay off my board and I could have saved a lot of money years ago had I given it a chance.

I'm not generally one that's been too interested in low gain overdrives, as I've always sort of viewed them as a boring but necessary evil, sort of a utility pedal. The two that have lived on my board for the past ten or so years are a TS of some sort and a klone. The klone has been my main OD the past decade as I feel it really suites my fenders single coils into blackface amps setup. So when I decided to build this I was really surprised by how good this pedal was, and not just for a mass produced boss pedal either. I guess you could say that this is more even in the frequency response than most other OD offerings from boss. It's like a really nice marriage of what I like about various pedals in one.

The compression is really nice and more natural than man pedals, and is very dynamic when it comes to digging into the strings. It's not got a nice airy presence but not overly bright like a KOT. The bass is filled out but it's not muddy and holds together well. It's got the classic filled midrange but not honky like a TS or klone, just enough to poke out. Its a low to mid gain drive with a very gradual gain knob that makes dialing in the amount of grit, and with the classic asymmetrical boss clipping it's got that tube breakup feel the more you push it. This thing has a LOT of volume on tap so as a boost this thing can really push a preamp cleanly. The all discrete opamp topology gives the pedal a really smooth transition into clipping that's a little more refined than the traditional soft clipping opamp drive.

I used regular mmbfj201 for the jfets in favor of the current production equivalent of the originals. Other than that it's all standard cheap stuff from tayda and stompboxparts. For the enclosure it's a yellow tayda box with UV print. I had to Google what a heliodor was and it's a yellowish crystal. I didn't want to just put a yellow crystal and say it was the mind stone so instead I used Loki's staff containing the mind stone that he used for mind control in the first avengers movie. A very simplistic and understated look in contrast to the circuit that has so much going on for a three knob low gain overdrive. If you want an alternative to a klone or a more full range drive then this might be a good one to try, it's been in production for 26 years now and I can totally see why.
xaBAo71.jpg
F6e786N.jpg

zPisP0d.jpeg
 
Last edited:
In this week's build report I'm taking a look at a pedal I had never played or really considered playing prior to building it...the Boss OD-3. This is a mistake on my part, as this pedal knocked a mainstay off my board and I could have saved a lot of money years ago had I given it a chance.

I'm not generally one that's been too interested in low gain overdrives, as I've always sort of viewed them as a boring but necessary evil, sort of a utility pedal. The two that have lived on my board for the past ten or so years are a TS of some sort and a klone. The klone has been my main OD the past decade as I feel it really suites my fenders single coils into blackface amps setup. So when I decided to build this I was really surprised by how good this pedal was, and not just for a mass produced boss pedal either. I guess you could say that this is more even in the frequency response than most other OD offerings from boss. It's like a really nice marriage of what I like about various pedals in one.

The compression is really nice and more natural than man pedals, and is very dynamic when it comes to digging into the strings. It's not got a nice airy presence but not overly bright like a KOT. The bass is filled out but it's not muddy and holds together well. It's got the classic filled midrange but not honky like a TS or klone, just enough to poke out. Its a low to mid gain drive with a very gradual gain knob that makes dialing in the amount of grit, and with the classic asymmetrical boss clipping it's got that tube breakup feel the more you push it. This thing has a LOT of volume on tap so as a boost this thing can really push a preamp cleanly. The all discrete opamp topology gives the pedal a really smooth transition into clipping that's a little more refined than the traditional soft clipping opamp drive.

I used regular mmbfj201 for the jfets in favor of the current production equivalent of the originals. Other than that it's all standard cheap stuff from tayda and stompboxparts. For the enclosure it's a yellow tayda box with UV print. I had to Google what a heliodor was and it's a yellowish crystal. I didn't want to just put a yellow crystal and say it was the mind stone so instead I used Loki's staff containing the mind stone that he used for mind control in the first avengers movie. A very simplistic and understated look in contrast to the circuit that has so much going on for a three knob low gain overdrive. If you want an alternative to a klone or a more full range drive then this might be a good one to try, it's been in production for 26 years now and I can totally see why.
xaBAo71.jpg
F6e786N.jpg

zPisP0d.jpeg
Super-clean and tidy inside and out. Inspiring stuff.
 
Super-clean and tidy inside and out. Inspiring stuff.
Thanks, it's an inspiring build to play.
View attachment 41672
Now this gives my OCD a chubby 🤣
You silly goose 🦆🤡
Hmmm, I was just thinking about building an SD-1, maybe I need to add this to the list too.....
Phenomenal build as usual dude!
You should be build them both, really different pedals that excel at different things
Looks excellent, great write up too. This is my favorite OD pedal! Would love to see a PedalPCB board for this one.
Thanks, I can totally see why this would be your favorite.
Absolutely perfect build @Guardians of the analog! The OD-3 is a great drive pedal!
Thanks, really is a great drive pedal, I think if more people played one they wouldn't be building as many klones.
 
Great job on this pedal, love the subtleness of just keeping the graphic to Loki's staff.

However...



Argh! I had this in my cart during the last sale and ... as usual I overindulged and needed to make some hard choices and took this PCB out of my cart... which your build-report is now making me regret.

Hopefully still in stock by the time the next Aion sale hits, as I'm sure your posts have a strong influence on the buying habits of the DIY community.
 
Great job on this pedal, love the subtleness of just keeping the graphic to Loki's staff.

However...



Argh! I had this in my cart during the last sale and ... as usual I overindulged and needed to make some hard choices and took this PCB out of my cart... which your build-report is now making me regret.

Hopefully still in stock by the time the next Aion sale hits, as I'm sure your posts have a strong influence on the buying habits of the DIY community.
Thanks for the kind words, but I don't know about all that now lol I think my builds are some of the more polarizing on here. You either like it or hate it and not much in between, but that's cool because Im building for myself in my own bubble
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