Drop D is great. One string lower, instant power chords, heavier sound. But once you've lived there for a while, you start wondering: what's below that?

Seven-string guitars exist for exactly this reason. That extra low B string gives you a whole new range of heavy, dark, low-end tones that a standard 6-string just can't reach in standard or even Drop D. But here's the thing - you don't necessarily need a 7-string to get there. With the right approach, you can push a 6-string into that territory and get surprisingly close.

What Makes a 7-String Sound Like a 7-String

Before we talk technique, it helps to understand what you're actually chasing. A standard 7-string is tuned B E A D G B E - that low B sits a perfect fourth below the low E on a 6-string. It's not just lower volume or a different tone color. It's a whole additional range of notes that changes how riffs, chords, and progressions feel.

The heaviness of 7-string playing comes from that low B anchoring everything. When a guitarist plays a riff on a 7-string, the low B creates a kind of gravitational pull that makes the whole thing feel more massive. That's what we're trying to recreate.

Option 1: Drop A Tuning

The most direct route is to keep dropping. If Drop D gives you D A D G B E, you can go further:

• Drop C: C G C F A D - everything down a whole step, low string to C
• Drop B: B F# B E G# C# - everything down a step and a half, low string to B
• Drop A: A E A D F# B - everything down two and a half steps, low string to A

Drop B and Drop A put your low string right in 7-string territory. A riff that a 7-string player would play on that low B? You can now play it on your low string.

The tradeoff is string tension. Standard strings get floppy and unplayable when you drop them that far. To make this work properly, you need heavier gauge strings - think .012s or .013s for the low string, or a dedicated set designed for drop tunings. Some players use a baritone guitar setup for this, which has a longer scale length that keeps the tension right even at low tunings.

Option 2: Partial Retuning - The Surgical Approach

Here's a trick that's more practical for players who don't want to commit to a full retune: only drop the strings you actually need for a specific riff or song.

Say you want that low B for one section of a song. Drop just your low E string down to B. Leave everything else alone. You lose your low E-based chord shapes on that string, but you gain the 7-string range right where you need it. For a lot of riffs, that's all you need.

This is the same logic as Drop D - minimum retuning, maximum result - just taken further. The key is knowing your riff well enough to work around the retuned string.

Option 3: Octave Pedal + Drop D

This one is a bit of a cheat, but it works live and in the studio. An octave pedal drops your signal down an octave. Combined with Drop D, your low D string is now producing a sub-octave D that sits well below anything a standard 6-string can produce naturally.

It's not the same as a real 7-string - the octave effect has its own character - but for live performance where you need that low-end weight without switching guitars, it's a legitimate tool. A lot of touring players use exactly this setup.

Option 4: Rethink the Voicings

Sometimes getting 7-string tones isn't about tuning at all - it's about how you voice your chords and riffs. Seven-string players often use that low B as a pedal tone, letting it ring while they move shapes on the higher strings. You can approximate this on a 6-string by:

• Using open string drones on your lowest strings while moving chord shapes higher up the neck
• Playing riffs in the lower positions of the neck where the natural resonance is heavier
• Letting notes sustain and overlap rather than playing them staccato

The low-end weight of 7-string playing is partly about the notes and partly about the approach. A slow, deliberate riff with good sustain on a 6-string in Drop D can feel heavier than a sloppy riff on a 7-string.

The Real Answer: Know What You're After

The honest truth is that a 7-string does something a 6-string can't fully replicate. If you're playing in a band that's tuned to B and you need to lock in with a bassist who's down there, you're going to want either a 7-string, a baritone, or a proper heavy-gauge setup in Drop B.

But if you're exploring those tones on your own - writing riffs, experimenting with heavier sounds, figuring out if 7-string territory is even where you want to go - you can get a long way with a 6-string and some creative tuning. It's a great way to audition the sound before committing to a new instrument.

Drop D was the first step down. These approaches take you further. How far you go depends on what you're playing and what you're chasing.

---

Wayne Sorbelli teaches guitar and ukulele at Island Guitar in Venice Beach, CA. Want to explore heavier tunings or extended range techniques? Book a lesson through the contact page.