Build Difficulty

Novice
If you have little to no experience with soldering, this build level is the best place to start. The circuits are very simple and the number of components and solder connections are minimal.
The Piledriver
The Step Ladder
The Thunderdrive
Amateur
If you have little to no experience, but would like to gain experience by building circuits with a few more components than the level-one projects, this build level should be okay for you. Just be sure to take your time when making each connection.
Tea Philter
The Rattler
The Thunderdrive Deluxe
Intermediate
With even more components than the level-two projects, if you have soldering experience and are not intimidated by building complicated circuits contained in tight spaces, then this build level should be okay for you. There is a level of ingenuity that comes from previous build experience which allows you to anticipate assembly challenges and find alternate approaches that may work better for you. These projects will be much easier for those people who have attained some level of ingenuity from experience.
The Contortionist
The Contortionist II
The Penetrator
The Ring Resonator
The Rock Bottom
The Trill Tremolo
Experienced
With even more complexity than the Intermediate projects, if you have soldering experience and are not intimidated by building complicated circuits contained in tight spaces, this build level should be okay for you. There is a level of ingenuity that comes from previous build experience which allows you to anticipate assembly challenges and find alternate approaches that may work better for you. These projects will be much easier for those people who have attained some level of ingenuity from experience.
The Aggressor
The Enticer
The Inducer
The Persuader
The Persuader Deluxe
The Ring Resonator Deluxe
The Suspended Chime
The Verb
The Wahtz Wah
Expert
If you have a good amount of experience with soldering, are not intimidated by building complex circuits and are confident about working safely with high-voltage electronics, then this build level should be okay for you. There is a level of ingenuity that comes from previous build experience which allows you to anticipate assembly challenges and find alternate approaches that may work better for you. These projects will be much easier for those people who have attained some level of ingenuity from experience.
MOD 101 Guitar Amp Kit
MOD 102 Guitar Amp Kit
MOD 102 Guitar Amp Kit (Non-US Version)
MOD 102+ Guitar Amp Kit
The Erratic Clutch Deluxe
The Verb Deluxe
The Wave