S520EX is a model name that could refer to one of at least two distinct S series guitar models.
S520EX commonly refers to one of these models:
- The S520EX (2002); Edge tremolo, Ibanez V1/V2 pickups.
- The S520EX (2005–2009); ZR tremolo, Ibanez Infinity pickups.
- S520 (2000–2001); Edge tremolo, Ibanez V1/V2 pickups.
- S520 (2014–2020); Edge Zero II tremolo, Ibanez Quantum pickups.