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Ibanez RGRTB621 Iron Label Electric Guitar - Black Flat

Solidbody Electric Guitar with Neck-through Nyatoh Body, Maple/Walnut Neck, Ebony Fretboard, 2 Humbucking Pickups, and Mono-rail Bridge - Black Flat
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Item ID: RGRTB621BKF
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Ibanez RGRTB621 Iron Label Electric Guitar - Black Flat
Price:$1,299 and 99 cents
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Ibanez RGRTB621 Iron Label Electric Guitar - Black Flat
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Price:$1,299 and 99 cents
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This article was Written By

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Metal-minded RG from the Ibanez Iron Label Series

The Ibanez Iron Label series presents metal-focused incarnations of the company’s most popular body styles, optimized for heavy genres with aggressive pickups, ultra-fast Wizard III necks, and premium hardware. The Ibanez RGRTB621 Iron Label electric guitar is a blacked-out take on the classic RG, with two scorching DiMarzio Fusion Edge humbuckers, a neck-through design for endless sustain, and an ultra-stable mono-rail bridge that refuses to buckle under even the most punishing onslaughts of rapid-fire downpicking. Plus, with the RGRTB621’s dyna-MIX 10 switching system, you have a massive mélange of metal tones at your fingertips. Plug this dusky axe into your favorite high-gain head, and get ready to experience the awesome power of iron!

Fixed bridge stability for rock-solid tuning

The Ibanez RGRTB621 Iron Label sports a fixed Mono-rail bridge, which gives you the peace of mind that comes from rock-solid tuning stability. From standard to lowered tunings, your guitar's pitch will remain more stable, and the string tension will feel more consistent. Changing tunings during a gig goes much faster, compared to messing with a vibrato bridge and dealing with locking nuts. Plus, you’ll enjoy increased sustain and a fatter overall tone due to the way the mono-rail bridges transfer the string's energy directly to the guitar's body.

Wizard III neck and ebony fingerboard

The 5-piece maple/walnut neck on the RGRTB621 features Ibanez's Wizard III neck profile, which gives you effortless access to this guitar's entire range. And for the ultimate in playability, the neck is capped with a luxurious ebony fingerboard, providing you with unbelievably smooth fretting. The guitarists here at Sweetwater can't get enough of the RGRTB621's fast Wizard III neck.

Fusion Edge humbuckers: made for metal

The Fusion Edge humbucking pickups on the RGRTB621 are the result of a collaboration between Ibanez and noted pickup maker DiMarzio. Designed for aggressive metal, Fusion Edge pickups deliver a powerful scooped sound with tight, compressed bass response and crisp high-end articulation — ideal for bludgeoning djent chugs and high-speed staccato riffing. The RGRTB621's DiMarzio Fusion Edge pickups give you the forceful yet precise tone that modern metal guitarists need. Beyond that, Ibanez's dyna-MIX 10 switching system provides 10 different pickup combinations via a mini-toggle and 5-way blade switch. Whatever tone you're hearing in your head, the RGRTB621 can achieve it.

Ibanez RGRTB621 Iron Label Features:

  • Neck-through design with nyatoh wings provides maximum sustain
  • Lightning-fast Wizard III 5-piece neck in maple and walnut
  • Primed for heavy genres with aggressive tonality and fast playability
  • DiMarzio Fusion Edge humbuckers deliver metal-ready tone
  • Extensive toneshaping control provided by the dyna-MIX 10 switching system
  • Mono-rail bridge provides precise intonation while enhancing sustain and note articulation
  • Gotoh MG-T locking tuners for exceptional tuning stability

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Tech Specs

  • General
  • Number of Strings 6
  • Left-/Right-handed Right-handed
  • Body
  • Body Type Solidbody
  • Body Shape RG Iron Label
  • Body Material Nyatoh wings
  • Body Finish Satin Polyurethane
  • Color Black
  • Neck
  • Neck Material 5-piece Maple/Walnut
  • Neck Shape Wizard III
  • Neck Joint Neck-through
  • Radius 12"
  • Fingerboard Material Ebony
  • Number of Frets 24
  • Fret Type Jumbo
  • Fret Material Nickel
  • Scale Length 25.5"
  • Scale Length Type Standard-scale
  • Nut Width 1.692"
  • Nut Material ABS
  • Hardware
  • Bridge/Tailpiece Mono-rail Tailpiece
  • Tuners Gotoh MG-T Locking
  • Electronics
  • Neck Pickup DiMarzio Fusion Edge Humbucker
  • Bridge Pickup DiMarzio Fusion Edge Humbucker
  • Controls 1 x master volume, 1 x master tone
  • Switching 2-way alter switch, 5-way blade pickup switch
  • Miscellaneous
  • Strings .010-.046
  • Case/Gig Bag Sold Separately
  • Manufacturer Part Number: RGRTB621BKF

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Reviews

Is my current new favorite despite my not wanting to like it at first
I got it as a gift and already had a few guitars I liked, including both Fender USA and Gibson USA and high end stuff. This one plays nicer than anything else I have played. It's for metal, which I rarely play these days, although I did back in the day. Now I play R&B and pop stuff and I'm so surprised by how this guitar became my favorite guitar out of all of then. I guess I didn't know what I really liked, wanted, or needed until I unwittingly gave this a try and now the rest of my guitars sit around unplayed. I think the neck plays so well and no fret markers to distract me were key. Also stays in tune and plenty of headroom and different sounds from the Dyna mix 9 pickup switching. Nice sounding clean and dirty. Frets are perfectly smooth and polished stainless steel. Go Iron label RGRTB621! I can't replace it with any other guitar, so I have to buy a second one as a backup! Ibanez Rules!
Music background: Guitar, Keys, Vocals
An absolutely amazing instrument
I decided to purchase this guitar after doing a lot of research, and it hits all the right spots for me:
- Fixed bridge for more tuning stability and quicker experiments with different tunings.
- A wonderful Ibanez's Wizard III ebony fretboard.
- Passible pick-ups (not a fan of changing batteries).
- Through-neck (just for style).
- Locking tuners.
- And an absolutely stunning all-black spartan design with a reverse headstock. Looks great in pictures, but ten times better in person.

If you're still thinking about it, don't! Just get it and treat yourself.

All praise by now, but what about flaws? There's only one caveat I had to deal with, which had to do with the string gauge I decided to put on. Depending on your preferences, you may not have to deal with this.
I wanted a fuller feel and a big oomph of the 56 gauge on my low E. I quickly discovered, that the string doesn't fit through the hole in the tuner. Got a bit upset, started researching. After looking up the tuner model online, I realized, that the tuners on the guitar might have been installed in a wrong order. It's a 3+3 system, with 3 tuners dedicated to lower strings and other 3 - for higher. The difference is exactly in the hole size.
I hesitated a bit, but then uninstalled the tuners on the guitar, and low and behold - they were installed in a wrong order. As a quick note, the tuners for higher strings have green dots on them on the underside, this is how I figured I'm not imagining this issue.
Did a quick job of switching the tuners, and the problem is gone!

I did some measurements, and if you're running any gauge
The One!
This guitar is truly a work of art. Esthetically speaking it could not get more metal, the all black out matte is gorgeous. Light weight, with easy access up to the 24th fret. Without spoiling much more, it truly is the one!
Awesome guitar
I got this a Christmas present (from myself) a couple of months after I got a great deal on a Jackson dinky x series and they're both aimed at the same metal head market so I can compare.
The Ibanez is just a real pleasure to play. I love the neck and for my not so long fingers, it makes a nice difference. The pickups are hot and clean and with the mini toggle coil tap you get a really nice variety of tones.
The dinky is nice as well but best used for some old hair metal music. The Ibanez is more versatile and I just love the all black vibe.