Monte Allums Guotar Pedal Mods

DISCLAIMER - Absolutely no refunds. All sales are final. We cannot be held responsible if you ruin your pedal. I got ripped off by a buyer of my TR-2 mod. Said he wasn't happy with the mod so I offered to buy the TR-2 from him. I gave him $110 in good faith. When I received the pedal it was non-functioning. He had drilled the hole for the pot in the wrong place piercing the ribbon going to the depth pot and completely pulled 4 traces from the PCB. And he wanted to know why the mod sounded bad. Because of this I will no longer issue refunds of any type on mods. If you do not have the skills required to perform the mod then please let us do the mod for you. Monte Allums

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Boss OD-2 Turbo OverDrive DIY Pedal Mod Kits

Even though it's no longer in production there are thousands of these pedals being used by people all over the world. What I have done with this mod is improve several areas in the circuit. First, we have modified the voltage giving the pedal more headroom and improving the quality of the effect. The pedal can now be used with a standard Boss PSA power 9V adapter.

We have also upgraded several key components in the circuit with higher quality components. This will add clarity, fullness and a much more focused tone to the circuit.

The OD-2 was created as a replacement for the OD-1 in the mid 1980s. The OD-1 was already legendary so following up to it was in impossible task. The design goal was to create a pedal with two modes. In mode one its sound should be similar to the OD-1 but in the turbo mode it should have more distortion and more gain. A tone control is included to give the user better control over the sound. The OD-2 is built using only discrete components (no integrated circuits).

The OD-2 production moved from Japan to Taiwan late 1988. After the production was discontinued, 1994, the pedal continued its life as the slightly modified OD-2R for another 4 years.

I found the tone of the OD-2 to be rather fizzy with too much top end sizzle in the gain and it was lacking bass. I also found the volume to be too low for it to be used as a clean boost or as a leed boost. The gain structure lacked harmonics and was not very tube-like. The gain as it faded out was also very splatty and uneven.

The OD-2 is built using only discrete components (no opamps). The Non-Turbo Mode uses 3 diodes and I offer different options to alter this modeís gain. The Turbo Mode doesnít use diodes to create the gain, it uses discrete jFET transistors. But we can shape that mode using other mods that are included.

I love the way this one turned out. The mod transforms this rather bland OD into a very dynamic useable Overdrive! The added volume will also allow the user to use it as a clean boost or as a volume boost for soaring leeds. I also offer a cap upgrade for the OD-2. The electrolytic capacitors in these old vintage pedals have a tendency to leak and lose tolerance over time.

By replacing these capacitors it can breath new life into the effect. Together with the regular mod the cap upgrade will resurrect this vintage OD and shape it into a great sounding vintage OD!

WARNING — These mods only work with the OD-2 and will not work on the OD-2r. The OD-2r's circuit is very different than the original OD-2.

With this Kit you will receive a 3mm Super Bright Clear LED, Solder and Desoldering Braid along with detailed easy-to-follow High Rez PDF Mod Instructions sent to you as an e-mail attachment.

With/Without Cap Upgrade
LED Color

OD-2 Turbo OverDrive Cap Upgrade Mod Kit

Electrolytic caps in tube amps, over a period of time, start to leak, loose their tolerance and go bad. It’s just the nature of Electrolytic caps. Sometimes the leaking is actually visible. But Electrolytic caps can look okay and still be faulty. By replacing Electrolytic caps in older pedals you can actually improve the overall effect of that pedal. Honestly I was skeptical until I received an email from a client that was having issues after he modded his Boss BF-2 with one of my kits.  He said the flange effect was barely noticeable.  A couple of weeks later I received another email from the same client.  The client said he had solved the issue by replacing all the Electrolytic caps in his BF-2.  This peaked my interest so I started experimenting.

I was astonished how some of my older pedals benefited from the cap upgrade!  Noise seemed to be reduced and clarity and presence of the effect were enhanced.  I am now offering these Cap Upgrade Kits for many of the pedals I offer kits for.  In some cases some of these caps are already upgraded in the kits that I offer.  But I am offering kits that replace all the Electrolytic caps for those that have not purchased my kits.  They will benefit from upgrading the Electrolytic caps that I do not replace in my kits.  You’ll find that some of these same caps are already replaced in the kits I offer.  It’s a win win all around for those that want the maximum benefit when upgrading their pedals.  But I didn’t stop there, when possible I have upgraded these Electrolytics with Metal Film and Tantalum.  Not only do these caps have tighter tolerances but they will also last the life of the pedal.

With this Kit you will receive Solder and Desoldering Braid along with detailed easy-to-follow High Rez PDF Mod Instructions sent to you as an e-mail attachment.


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