Tuning Overview: Deep G Standard 9-String

The Deep G Standard 9-String tuning is a formidable expansion of the classic E Standard tuning, designed for players seeking an incredibly wide tonal range, especially in the sub-bass frequencies. It essentially takes the familiar 6-string EADGBe configuration and extends it downwards with three exceptionally low strings, creating a monstrous sonic landscape.

Verbal Analysis

This tuning is an absolute behemoth, perfect for genres that demand immense depth and sonic weight. Imagine the thunderous impact for djent, doom metal, or experimental soundscapes. The lowest strings (G0, C1, F1) plunge into territories usually reserved for bass guitars or even pipe organs, offering a dark, resonant foundation. Despite this extreme low end, the upper six strings remain familiar, making it surprisingly intuitive for players accustomed to standard tuning, as all their existing chord shapes and scale patterns are directly transferable, simply sounding an octave lower.

Technical Analysis

The tuning of the Deep G Standard 9-String can be broken into two distinct parts:

• Standard Octave Core (Strings 1-6): The highest six strings are tuned to E4, B3, G3, D3, A2, E2. This is precisely the interval structure of standard EADGBe tuning, but all notes are pitched one octave lower than on a typical 6-string guitar. This provides a familiar framework for chord voicings and melodic work.
• Extreme Low Extension (Strings 7-9): The three lowest strings dramatically extend the instrument's range. String 7 is F1, String 8 is C1, and String 9 is G0. G0 is an incredibly deep note, two full octaves below the low E string of a standard guitar. These strings provide unparalleled low-end power and resonance.

Open Chords & Voicings

While strumming all nine open strings (G0 C1 F1 E2 A2 D3 G3 B3 E4) creates a dense, somewhat dissonant cluster, the strength of this tuning lies in its ability to support rich, extended chords and massive power chords:

• Standard Chords: Any chord shapes from standard EADGBe tuning can be applied directly to the top six strings (E2 A2 D3 G3 B3 E4). For example, an open E minor chord can be formed using strings 6, 3, 2, 1 (E2, G3, B3, E4). Adding string 5 (A2) creates an Em7, and string 4 (D3) an Em11.
• Power Chords: The true power of this tuning shines with low-register power chords. Simple two or three-note power chords using the lowest strings (e.g., F5 using F1 and C2, or C5 using C1 and G1) will deliver earth-shattering impact. The octave relationship between E2 and E4, and G3 and G0 provides for massive, full-bodied octave chords.
• Unique Voicings: The unique G0-C1-F1 interval stack in the lowest strings, combined with the standard E-A-D-G-B-E, allows for experimental and complex voicings. While not immediately forming a simple open chord, these intervals provide a vast harmonic palette for creative exploration.

Tuning Notes: Deep G Standard 9-String

Below are the specific notes for each string, from the lowest (String 9) to the highest (String 1):

• String 9: G0
• String 8: C1
• String 7: F1
• String 6: E2
• String 5: A2
• String 4: D3
• String 3: G3
• String 2: B3
• String 1: E4

How to Tune Your Guitar

Follow these instructions to achieve the Deep G Standard 9-String tuning. Pay close attention to the recommended semitone adjustments for each string.

• String 9 (G0): Tune down 6 semitones.
• String 8 (C1): Tune down 6 semitones.
• String 7 (F1): Tune down 6 semitones.
• String 6 (E2): Keep as is; no change (0 semitones).
• String 5 (A2): Keep as is; no change (0 semitones).
• String 4 (D3): Keep as is; no change (0 semitones).
• String 3 (G3): Keep as is; no change (0 semitones).
• String 2 (B3): Keep as is; no change (0 semitones).
• String 1 (E4): Keep as is; no change (0 semitones).

Important String Gauge Advice: Please note that tuning String 9, String 8, and String 7 down by 6 semitones each is a significant change. For such extreme downward tuning adjustments (exceeding 4 semitones down), a heavier gauge string set is strongly advised to maintain proper string tension, intonation, and playability, and to prevent potential damage to lighter gauge strings.