Verbal Analysis:

This is a truly heavy and resonant 7-string guitar tuning, custom-built for genres that demand a profound, crushing low end like metal, djent, and progressive rock. The inclusion of a low E string provides an incredibly deep, foundational rumble that extends your bass range without sacrificing the higher register, allowing for massive riffs and intricate leads. It's engineered to deliver a thick, full-bodied sound, while the suspended 4th element (implied by the A sus4) introduces a touch of openness and complexity, perfect for atmospheric pads, dissonant textures, or powerful, chugging rhythms. The open quality of the tuning also makes it highly intuitive for rhythmic playing and for creating expansive, droning chords.

Technical Analysis:

This tuning sets your 7-string guitar to E1, A1, E2, A2, E3, A3, D4, from the lowest (String 7) to the highest (String 1) string. The structure features a repeating pattern of E and A notes across the first six strings (E-A-E-A-E-A), culminating in a D on the highest string. This configuration creates a rich harmonic landscape:

• The open strings themselves strongly suggest an A suspended 4th (Asus4) chord (A, D, E being the constituent notes). With the lowest E as a dominant root, it creates a powerful E minor 7 suspended 4th (E-A-D) sound, offering both depth and a unique harmonic tension.
• The lowest three strings (E1, A1, E2) immediately form a deep and resonant E5 power chord. Similarly, A1, E2, A2 form an A5 power chord.
• The consistent E-A pattern allows for easy single-finger barring across multiple strings to create powerful, wide voicings. For instance, barring at the 5th fret across all strings would yield an A sus4 chord (A D A D A D G).
• This tuning facilitates the creation of complex harmonic textures with minimal effort, making it ideal for experimental or rhythmically intricate playing styles.

Tuned Notes:

• String 7: E1
• String 6: A1
• String 5: E2
• String 4: A2
• String 3: E3
• String 2: A3
• String 1: D4

How to Tune (from a standard 7-string B-E-A-D-G-B-E tuning):

It's important to note that many strings in this tuning require significant downward movement from a standard 7-string setup. For any string movement exceeding 4 semitones (either up or down), we strongly recommend considering a different string gauge to ensure optimal tension, intonation, and string longevity.

• String 7 (Lowest B): Tune down 7 semitones to E1. (⚠ Significant drop, consider a thicker gauge string.)
• String 6 (E): Tune down 7 semitones to A1. (⚠ Significant drop, consider a thicker gauge string.)
• String 5 (A): Tune down 5 semitones to E2. (⚠ Significant drop, consider a thicker gauge string.)
• String 4 (D): Tune down 5 semitones to A2. (⚠ Significant drop, consider a thicker gauge string.)
• String 3 (G): Tune down 3 semitones to E3.
• String 2 (B): Tune down 2 semitones to A3.
• String 1 (Highest E): Tune down 2 semitones to D4.