Ibanez S721RB Iron Label Black Flat

Essential Information About the Ibanez S721RB Guitar

• Iron Label Spirit: a completely "blacked out" look and design focused on modern metal sounds, direct and no-frills.


• Wizard III 5-piece Maple/Walnut Neck: thin, fast, and comfortable profile, ideal for technical playing and fast runs on 24 frets.


• Dual DiMarzio D Activator Humbuckers: sharp attack, very tight lows, and excellent definition under heavy distortion.


• Stage/Studio Reliability: Gotoh MG-T locking tuners, Gibraltar Standard III bridge, and luminescent side dot inlays for confident playing even in the dark.

Iron Label x S Series: a radical version of an iconic Ibanez design

The S series is known for its "form and function" approach: a fast-to-play, lightweight instrument designed for modern playing. With the Iron Label version, Ibanez takes the concept further by aiming for a sober and aggressive aesthetic, as well as a configuration clearly oriented towards heavy tone. The S721RB fits this philosophy: everything on the guitar serves playability, tuning stability, and sonic efficiency.

Who is the S721RB made for? From heavy rhythms to precise solos

With its Wizard III neck, 24 frets, and construction designed for speed, the S721RB is especially aimed at intermediate to advanced guitarists who want a responsive electric guitar made for chaining palm-muted riffs, fast alternate picking, tapping, and highly articulated leads. Naturally comfortable in metal (modern, prog, metalcore, djent), it is equally relevant in energetic rock whenever a clear attack, solid tuning stability, and a "fast" playing feel are sought. The 5-way selector allows exploring several tonal nuances around the two humbuckers, handy for switching from a big rhythm wall to sharper, more defined sounds.

A tight, powerful, and clear sound designed for high gain

The okoumé body provides a lively response, with a register that remains clear and "solid": it's a good playground for maintaining definition when pushing the gain. The ebony fingerboard enhances this sense of precision, with firm lows, present mids, and a marked attack, while promoting a quick response and rich sustain for solos. On the amplification side, the DiMarzio D Activator (passive humbuckers) are designed to deliver a generous output level while keeping an open and clean sound in articulation: harmonics come out easily, lows stay tight, and complex chords retain good clarity. Finally, the combination of the Gibraltar Standard III bridge and neck design contributes to efficient vibration transfer, with a feeling of stability and control particularly appreciated in standard tuning and heavy rhythm playing.

Recommended Compatible Accessories

To maintain the original feel and balance, opt for a set of D'Addario EXL110 strings with gauges .010/.013/.017/.026/.036/.046 (same as factory setup). This is a safe choice for this 6-string guitar with a 25.5" / 648 mm scale length, ideal for keeping a familiar tension in standard tuning.

Technical specifications

Left handed	No	Nbr of strings	6
Strings	Steel	Color	Black

Category	Iron Label	Neck thickness at 12th fret	21 mm / 0.83"
Series	S	Scale length	25.5" / 648 mm
Number of strings	6	Nut width	43 mm / 1.7"
Body wood	okoumé	Fingerboard width at end	58 mm / 2.28"
Top (solid body)	none	Fingerboard	ebony
Body finish	satin polyurethane	Radius	15.75" / 400 mm
Total length	985 mm / 38.78"	Number of frets	24
Body length	449 mm / 17.68"	Fret type	jumbo
Body width	318 mm / 12.52"	Side markers	luminescent side dot inlay
Body thickness	38 mm / 1.50"	Bridge	Gibraltar Standard III
Neck type	Wizard III	String spacing	10.8 mm / 0.43"
Construction	bolt-on	Tuners	Gotoh MG-T locking machine heads
Neck wood	5-piece maple/walnut	Nut	plastic
Neck finish	satin polyurethane	Hardware color	black
Neck thickness at 1st fret	19 mm / 0.75"