I organize the effects pedals that I am currently using together on a small, portable pedal board for the purposes of convenience, and efficient setup, and tear-down.
I recently learned that daisy chaining the 9v power to the effects pedals through the "1-spot" type power brick can cause ground loops (earth loops) that create electrical interference which introduce a hum as you crank amplifier volumes higher. Interestingly, this appears to be a lesser issue with my solid-state amps. With solid-state amps, running the power in a daisy chain seems to only add a very slight hiss. However, with tube amps (valve amps), there is a loud humming or buzz. I expect this is because a tube amp draws a lot more current than a solid state amp, and the circuitry in this technology is a lot more susceptible to electrical induction. The hum is particularly problematic with vacuum tube amps, as it significantly pollutes the tone, thus killing the vibe.
Of course, if you notice a hum or buzz, it is worthwhile to do some proper troubleshooting first, to identify the source of the problem. You may have a bad cable, the sequence of your pedals could be creating an issue, or buffering circuits in the pedals might be another cause. So, running each pedal into your amp independently, or systematically testing cables may be worthwhile as a first step.
In all likelihood though, if you are chaining the power supply, it is a ground loop issue. In this case, you should provide isolated power to each pedal with multiple outlet, isolated power supplies. These types of power supplies use multiple transformers to electrically separate each 9v output to each pedal. While some of these types of isolated power supplies can be pricey, they pay for themselves over time with the savings in 9v batteries, and you reduce complexity, and save space on your power strip by not having many wall warts.
According to String Theory, all objects in the universe are made up of hypothetical vibrating filaments (strings) and membranes of energy. Strings vibrate in a multi-dimensional spacetime. The vibration of the string in different dimensions determines whether it appears to be matter, light, or gravity to us in our 3 dimensional perception.
Let's consider another multi-dimensional problem: Sight reading musical notation and guitar. We have a notation system that is designed for the right hand position on a piano, which runs in a single linear (left/right) dimension. The guitar's fretboard is not linear or one-dimensional, and you use both hands to play a note, so there are ambiguities that confound the guitarist's ability to sight read.
However, many guitarists do sight read from standard notation (not tablature). They mentally transform a notation system designed for a one dimensional keyboard to the note positions on a two dimensional fretboard, where the same note can appear multiple times in different places. From my research, there are 3 components: Fretboard knowledge, notation knowledge, and repetition of basic exercises. I have always approached the sight reading problem by figuring out the notes ahead of time, while concurrently figuring out the best position to play them based on what comes next. This has the disadvantage of taking a long time, but the advantage is that by the time I am finished, I have essentially memorized the piece of music. It does not qualify as "on-the-fly" sight reading.
After recently taking on a challenge that required me to learn a huge amount of music from notation in a small amount of time, the next step in my musical evolution is to improve in my sight reading; being able to play from notation after two or three passes without having to go through a major decoding exercise first.
Wish me luck as I journey into the 6th dimension.