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Pretty much. If I recall correctly, the first DC filter cap (C100) 100uF vs, 10Uf. Blocking cap (C4) 330nF vs. 68Nf. Tl072 vs. RC4558. Treble control taper (A10K vs. B10K). C1 are so close, it is basically the same (9.6uF vs. 10uF). Subtitle differences and IMHO, the Jubilee sounds more...

You will be happy with it. I used a Urei (UA) 1176 and a Klark Technic 1176 religiously in my friend's recording studio, from about 1985 thru 1999. I also repaired the former once. The Wampler pedal is not an exact clone of that circuit, instead utilizing the essential circuits and gearing it...

My question is: Why is the musician's equation = (current number + 1)? For example: How many pedals do you really need? A: current number + 1. Happy Friday, everyone!

I've been repairing tube amps since the 70's and another like issue for vintage Fenders is a poor repair. It is easy to overheat the eyelet or try and reflow old solder, causing the wax and solder to flow to surrounding eyelets. It creates the same parasitic effects you are describing.

I build small components to tall components and am fastidious, checking the component to its value to the circuit and testing each component's values with a meter. Which is important because especially for overdrives, I deviate from the stock circuits. I don't think this saves time, just...

Like @Erik S , I use clear tape to hold down the paper and adjust to the contours of the enclosure. Then use an awl to mark center, then use smaller drill bits to create a guide for the bigger drill bits, then use a drill press and a graduated bit to finish. I leave enough tolerance to adjust...

Agree. Both 1176 based, except Wampler excluded the impedance matching transformer, which adds a little harmonic distortion.

It all depends on what 'character' you are looking for, but I am going to guess the answer is yes. It can do some of the chicken-pick'in squish that Ross compressors do. It can do the transparent 1176. I use it for making my guitar's tone bigger, by the settings on the first picture. I get...

I have done a lot of the aforementioned mods. I have been using LM308 NOS (metal cans) and use a 47pF to 82pF c3 compensator cap to slow down the slew rate a little more (IMHO, the 'blur' from the IC and the crunch from the clipper diodes are the signature sound). I also go a little heavier on...

If I have it correct, you are asking about 1.) sister boards (your addition to an existing pedal) and 2.) adding in-series components to existing PCBs? If so @Brett had some great suggestions. For #1, I've been as unsophisticated as wrapping the sister board in blue painter's tape (will not...

Takes a smart person to admit a mistake and learn! This is one of the reasons why I use sockets for most ICs, transistors, FETs and the like. The second reason is, less risk of temperature or static damage. The third is ease of any future repair or swap. Once I know the system works, I dab...

The link did not work for me (page not found). Can you better describe the problem? FYI: I've been repairing and build tube amps since the late 70's.

Can you share a schematic?

First, I personally never qualify who or what I will learn something new and having been working on music electronics since the late 1970's, I never think I know it all. IMHO, Brian Wampler is a smart dude. Sadly, the one thing that would be hard to learn from him, is his incredible sense of...

I use a four conductor 1/8" plug into the phone's headphone + mic jack, which terminates to (4) RCA plugs, to which I use an RCA female to 1/4" male adapter. The app I use is called 'PA Tone', is free and will do all the audio frequencies and multiple wave forms, plus pink and white noise. I...

Yes. Digital Multi Meter set on DC voltage set to a range higher than 9V. Then you need a signal generator (I use a phone app) into the input and look at the sine wave oscilloscope, which is set to 1ms at .1 V on the AC setting. I check the input and out put of the devices, folloing the schematic.

I could not find anything glaring from the pics. I recommend checking and notating the pin voltages on the ICs, FET and Transistor, looking for anomalies (Vref not being in tolerance of half of the Vcc). Then I would throw a 1Khz sine wave into the input and trace it through each stage with...

There are trace levels of mercury in solder, especially before the 2000's.

Anything which creates negative pressure away from your nose and mouth, works. Sadly, I didn't start using one until this year. I wonder what 50 years of breathing lead, acid and mercury will do to me?

The single op-amp IC in a DoD 250 Overdrive, will eventually distort and contribute to the distortion sound, but only say one third. However, the 250 is basically a distortion, which gets most off its grit and compression from hard-clipping asymmetrical diodes and its character from the C3 + R7...