Through the years, Ibanez guitars sported a variety of double locking tremolos. Some of these machines became legendary, some - not so much. Which one do you have? Which one should you get? Which one to avoid? Read on.

For tips on setting up and tuning your Ibanez (or any other) double locking tremolo, consult the excellent Jemsite guide.

1985-2011 Timeline

1985-2011 Trem Timeline
Ibanez Pro Rock'R 1985. Pro Rock'r

These days, the Pro Rock'r is a curiosity - a rare, unique, and problematic to find parts for bridge most famous for being featured on Steve Lukather's RS1010 signature model.

Ibanez Edge 1986. Edge

The Edge is Ibanez' original superb rehash of the Floyd Rose design. The fact that survivors from the inaugural model run largely retain their tuning stability perfectly to this day speaks volumes about the virtues of the Edge. The late 80s models often came in tandem with the Backstop arming adjuster.

Ibanez LoPro Edge 1991. LoPro Edge

An enduring favourite to this day, Lo Pro Edge sports all the features of the Edge along with improved ergonomics and a very low profile. 7-string and piezo versions available in any number of combinations.

Ibanez LoTRS 1994. LoTRS I / II

Offered on low-end models from Japan and Korea, LoTRS bridges are notorious for their weak knife egdes prone to wearing out from regular use. Beware.

* Extended thanks to Dave for the spy shot of the pernicious beast

Ibanez Edge Pro 2003. Edge Pro

An evolutionary redesign of the LoPro Edge, the Edge Pro is one of the lowest profile tremolos to ever be installed in an electric guitar. While only sharing the arm and socket with its predecessors, the Edge Pro nevertheless boasts the same quality standards as the other high-end Ibanez systems.

* Extended thanks to Eric for the attractive mugshot of the unit

Ibanez Zero Resistance 2003. Zero Resistance (ZR)

A novel take on the dual locking bridge, ZR pivots on a pair of ball bearing. A removable spring return device (Zero Point System) helps keep the bridge level after dives. While the action of the ball-bearing pivot remains an acquired taste, the ZR has proven to hold together well.

2003. Edge Pro II

A replacement for the LoTRS bridges, the Edge Pro II is a simplified version of the Edge Pro, and lacks the senior model's durability and key features.

Ibanez Edge III 2007. Edge III

A bridge used on entry-level guitars, the Edge III is expectedly unremarkable in terms of quality, and have been known to fail spectacularly from regular use.

2009. Edge Zero

The newest high-end fulcrum tremolo by Ibanez, the Edge Zero is a Zero Resistance bridge with a knife edge pivot. The ZR adjustable spring system combined with the ZPS contributes to feel different from a traditional 3-spring setup, however the bridge has proven to be reliable and perfectly usable.

2009. Zero Resistance 2

An upgraded ZR installed on Japanese-made S Prestige models, the ZR2 combines the features of the ZR, an improved fit and finish, and an Edge Zero arm socket.

2011. Edge Zero II

A replacement for the Edge III, the Edge Zero II is a junior version of the Edge Zero. The junior iteration loses the integrated intonation tool and the pop-in arm found on its Japanese-market counterpart, but retains the locking studs.