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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 SD-1 Pedal Cap Upgrade Mod KitElectrolytic 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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| SD-1 GT Mod WARNING! — The OPA2134PA opamp, of which are included in many of my kits, is currently extremely hard to find. Mouser and Digikey are currently out of stock with none expected until 2023. I have hundreds in stock. BE CAREFUL BUYING THE OPA2134PA ON EBAY. THE MAJORITY ARE FAKE! Manufacturers in China are rebranding cheaper opamps and selling them as OPA2134PA opamps. I test all my OPA2134PA opamps I buy. You can easily test whether a OPA2134PA has been rebranded. Do this, take some Acetone on a Q-tip and rub across the lettering of the opamp. If it is Fake the ink used to print the labeling will dissolve into the Q-tip. Boss SD-1 GT DIY Pedal Mod Kits - This is my third mod for a Boss SD-1. This mod is built around a 2N3440 Transistor. A 2N3440 Transistor in this circuit, along with a few other tweaks here and there, transforms this pedal into an absolute tone monster! This mod combines the positive qualities of my first two SD-1 Mods to create an unbelievably great overdrive. The SD-808 is one of my personal favorites. Some say it's the best SD-1 mod available. The SD-1 GT is more transparent than either of my other two SD-1 Mods. It has a very slight mid boost which helps you stand out in a mix. But the real magic happens in the upper frequencies. If you've ever played a vintage Script Dyna Comp or Ross compressor you've experienced the magic that happens in the upper range of those pedal and give them the magic that pro players rave about. That same magic is present in my SD-1 GT Mod. Note clarity is the best of any pedal mod I sell to date. My RAT 2 Fat Rat Mod comes very close but the GT has a tad better note clarity. Think early Led Zepplin Tone here. I've also incorporated two switches into the SD-1 GT Mod. One switch adds presence and gain while the other switch toggles between Asymmetrical (Boss) and Symmetrical (Ibanez) Clipping. There are a ton of tonal options available here. Want clean boost. No problem. Want note articulation and clarity. No problem. Want smooth creamy overdrive. No problem. Want a combination of them all. You got it. Very versatile Mod that offers a wide pallet of tonal colors. To add a little icing on the cake I am including the extremely popular and quiet OPA2134PA Burr Brown op-amp. So, you thought the SD-808 was a great mod? Wait till you hear the GT! IMPORTANT — Boss has started using surface-mount components on some of their new pedals. I've created a page to help you determine if your pedal is moddable. Read about it here.
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With this Kit you will receive a 3mm Super Bright Clear White LED, 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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 SD-1 Stacked Plus Mod for Guitar & Bass
I've been wanting to incorporate my Dual Stack Adapter into an SD-1 mod for some time. This will be my 3rd mod for the SD-1. The SD-1 is such great mod bait. For $40 new and even less on eBay. The pcb is easy to work on and the stock pedals actually sound decent. I built this one around my new Dual Stack Adapter. The Dual Stack Opamps will give the circuit a tab bit more headroom, less noise and a more natural amp-like gain. The Tri-Gain switch will give you 3 very usable gain modes. I have also added much needed volume to the effect. I've always had to almost max the gain and volume knobs to get a good volume boost. Well, not any more. There's a ton of volume available with the effect on now! Inevitably I'll get the e-mail asking me which mod is the best.
Heck, I like them all! But they are all different. For the person that doesn't like dealing with switches my regular SD-1 and SD-808 mods are the ticket. But for the more adventurous and experienced modders the GT and the Stacked Plus will take you much further tone-wise. And you'll be rewarded for your efforts. For those that feel they need more gain I suggest adding my Dual Gain Upgrade Switch. No need for the Symmetrical Gain Upgrade Switch with the Stacked Plus Mod because I have incorporated that into the Tri-Gain Switch. Tone-wise this mod has a bit more girth than any of my other SD-1 mods. This mod will work great in front of a clean amp and is just magical in front of an already overdriven amp. So as a boost this mod really shines. But the really cool thing is I designed this mod to work with both Guitar and Bass. No special tweaking necessary. Just plug it in and go. I designed the EQ of the mod so that the modded Version lets the full range of frequencies through. Works great on a bass track for added thickening. |
 |With this Kit you will receive a 3mm Super Bright Clear White LED, 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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 SD-808 Mod PlusWith this mod I take the SD-1 and mod it to TS808 specs. The circuit of the SD-1 is very similar to the TS9. This mod includes all the mods in my regular SD-1 mod, plus you get three extra components that will take the SD-1 to TS808 specs. I have also included a RC4558P chip. The stock SD-1 comes with the JRC4558DD op-amp chip. Some feel the RC4558P is a better sounding chip than the JRC4558DD in the SD-1 circuit. I also include a 3mm Super Bright Blue LED and a resistor replacement that will increase the brightness of the LED. What's really amazing is how great this pedal sounds with this Mod. I also include the symmetrical clipping mod for those that prefer Ibanez TS808 clipping over Boss asymmetrical clipping. This mod is absolutely the best SD-1 mod sold anywhere by anyone at any price! The complexity of the tone after the mod is startling. We also mod the clipping section to symmetrical clipping like Ibanez uses in the TS9. You can also change the character of the pedal buy swapping out different chips which I now sell above. Compared to my regular SD-1 mod this mod will take the SD-1 and add presence and much more complexity of tone. It’s like taking a blanket off the speaker in your amp. The tone is very open, airy and transparent. Very smooth, yet biting gain. Controlled feedback and sustain is incredible with this mod. This is the ultimate SD-1 mod! IMPORTANT — Boss has started using surface-mount components on some of their new pedals. I've created a page to help you determine if your pedal is moddable. Read about it here. SD-808.mp3 — SD-808 Sound Sample - This mp3 was recorded on a Strat with a DiMarzio PAF Pro at the bridge and two DiMarzio Virtual Vintage pups at the neck and middle positions. The amp was a 1975 Fender Super Reverb and the mic was a SM57. Some parts of the mp3 were recorded with the bridge pickup coil split. Sean_Borton_1.mp3 — Sean Borton mp3s - These mp3s were graciously supplied by Sean Borton. The clips are from Sean's latest album "What a Party". Sean is playing a Strat w/EMG SA (Vintage) pups through a Vox AC30 set to a clean setting. Thank you Sean for letting me use these clips. Man, what great tone Sean, Awesome! Special thanx to Juan Pablo Tomas for making this Youtube video. VINTAGE V2 reissue Telecaster on the computer as a clean signal (no amps used) and then I passed the track through the boss sd-1 before and after the mod. So as I used no amp the sound is quite raw but the differences are quite obvious. Awesome! Thank you Pablu! Stock SD-1 VS SD-808 - This Youtube Video was graciously submitted by Loic Bronner. Thank You Loic for taking the time to make it and for sharing it with us! |
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| SD-1 Mod This is probably the one of the best kept secrets on the planet at $40 USD. This pedal is a sleeper and a steal. New, it is half of what a used TS9 sells for on eBay. What's really amazing is how great this pedal sounds with my $20 Mod. So for $60 and little time you get a pedal that blows away the competition. No hype, this Mod is THAT Good! Even I am shocked at how well this mod turned out. Stock the SD-1 delivers warm fat tones. The stock SD-1 from the factory sounds rather bland and not very transparent. The PCB is almost exactly the same as a Tube Screamer. The stock SD-1 also comes with the famed JRC4558D opamp chip. You can change the character of the pedal buy swapping out different chips which I now sell above. This mod will make you want to throw away your Tube Screamer. Well, maybe not, but this mod transforms this already good sounding pedal into absolutely one of the best Overdrive pedals sold anywhere at any price! With this mod I tried Carbon Composition, Carbon Film, Metal Film, Tantalum, Rectifier Diodes, LEDs, Germanium Diodes, etc. just to see what affect each one would have on the SD-1's tone. The Mods below are a result of that research and experimentation. IMPORTANT — Boss has started using surface-mount components on some of their new pedals. I've created a page to help you determine if your pedal is moddable. Read about it here.
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SD-1 Symmetrical Gain Upgrade Kits
Works With Both Regular SD-1 & SD-808 SD-1 Mods! This kit allows users of my regular SD-1 and SD-808 Mod Kits to upgrade to a Symmetrical Clipping Circuit. Notice: This Symmetrical Gain Upgrade kit may be used on any stock or modded SD-1. With this kit you can switch between Symmetrical (Ibanez) and Asymmetrical (Boss) clipping. Symmetrical clipping is a little smoother and has a little less bite than the Boss Asymmetrical clipping. It's a nice option to have on any SD-1. With this Kit you will receive one 1N4002 Diode, one Toggle Switch, 24 Ga. Wire and Heat Shrink Tubing. Very easy to follow illustrated instructions are sent VIA e-mail attachment along with paper instructions sent with the parts. Hear For Yourself! (.mp3) SD-1 Switch Sound Sample - This mp3 was recorded on a Strat with Fender SCN Pickups. Switches were set to Symmetrical Gain and The Stock Lower Gain Side of the switches The SD-1 is set to 10 O'clock on both the Volume and Tone and the Gain is set to 9 O'clock. The amp was a stock 2000 Fender Hot Rod Deluxe and the mic was a SM57. My Opto CS3 mod is used in front of the SD-1 to fatten it up a bit. |
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SD-1 Dual Gain Upgrade Kits With this Kit you will receive one 2.2k-ohm Resistor, one Toggle Switch, 24 Ga. Wire and Heat Shrink Tubing. Very easy to follow illustrated instructions are sent VIA e-mail attachment along with paper instructions sent with the parts. |
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