Ibanez RGRTB621-BKF Black Flat RGRT Iron Label

An RG Designed for Precision: The RGRTB in Ibanez's "Modern Shred" Spirit

The RGRTB621 belongs to the RG family, known for its fast necks and performance-oriented ergonomics. Here, Ibanez takes the concept further with a neck-through construction and electronics designed to meet current needs, from modern metal to punchier tones, without losing the sharp character of a true playing guitar.

Who Is It For, and What Styles?

This electric guitar is primarily aimed at intermediate to expert guitarists seeking a responsive, stable, and precise instrument. It excels in modern metal, djent, hard rock, prog, and any situation where a tight rhythm and leads that cut through the mix are desired. Thanks to the dyna-MIX10 and Power Tap, it can also handle more open sounds for clear intros, arpeggios, or funky/alternative rock parts.

Sound

The pair of DiMarzio Fusion Edge humbuckers (passive, ceramic magnets) is designed to deliver a powerful and clear sound: compressed and tight lows to maintain definition in standard tunings, and clean highs for standout harmonics. The dyna-MIX10 system adds true versatility: depending on the 5-way selector position and the Alter Switch, you get combinations ranging from full humbucker to single-coil-like variations via the Power Tap, useful for brightening the tone without changing guitars. The neck-through construction promotes generous sustain and even response across the entire neck, while the Mono-rail bridge enhances string separation and precision, especially during fast playing.

Recommended Compatible Accessories

For transport, the recommended references are the M300C case or the IGB540-BK gig bag. For replacement strings, the guitar comes stock with D'Addario EXL110 gauges .010/.013/.017/.026/.036/.046, a standard set that's easy to find.

Technical specifications

Electronics: microphone configuration	HH	Body	Nyatoh
Category	ST	Bridge / tailpiece	Fixed
Left handed	No	Electronics	Passive
Strings	Steel	Color	Black
Nbr of strings	6	Finishing	Matt
Fingerboard	Ebony	Hardware	Black
Nbrs of frets	24

Construction	neck-through	String spacing	10.8 mm / 0.43"
Finish	Black Flat	Tuners	Gotoh MG-T locking
Neck type	Nitro Wizard 5-piece maple/walnut, neck-through	Hardware finish	black
Number of frets	24	Neck pickup	DiMarzio Fusion Edge (H), passive, ceramic
Fret type	Jumbo	Bridge pickup	DiMarzio Fusion Edge (H), passive, ceramic
Scale length	25.5" / 648 mm	System	dyna-MIX10 with Alter Switch
Nut width	43 mm / 1.69"	Factory tuning	1E, 2B, 3G, 4D, 5A, 6E
Width at 24th fret	58 mm / 2.28"	Gauge	.010/.013/.017/.026/.036/.046
Thickness at 1st fret	19 mm / 0.75"	Inlays	luminescent side dots
Thickness at 12th fret	21 mm / 0.83"	Recommended case	M300C
Radius	400 mm / 15.75"	Recommended gig bag	IGB540-BK
Bridge	Mono-rail