Thorium Mod Wiki
Granite Boom Box
  • Granite Boom Box item sprite
Stack digit 1.png
Electronic Instrument
Damage12 Symphonic
Knockback8 Very Strong
Critical chance4%
Use time30 Average
TooltipReleases some sick, granite beats around you
While active, nearby enemies are overflowed and repelled
Inflicts DebuffGranite Surge.pngGranite Surge
Debuff duration2 seconds
Debuff tooltipToo much energy is causing damage and lowered defense
RarityRarity Level: 3
Sell5000*50 Silver Coin.png
EmpowermentsEmpowerment - Empowerment Prolongation.png

The Granite Boom Box is a craftable Pre-Hardmode Bard weapon. It causes the player to be surrounded by a blue energy ring, which persists for 10 seconds and automatically and rapidly releases small, instantaneous blue energy beams towards nearby enemies. These projectiles deal damage and inflict the Granite Surge debuff, dealing damage over time and lowering defense. When used, it empowers nearby players and the user with the Empowerment Prolongation I empowerment.

Its best modifier is Fabled.



Crafting Station
Iron Anvil.pngIron Anvil /
Lead Anvil.pngLead Anvil
Ingredient(s) Amount
Granite Energy Core.png Granite Energy Core 8
Granite Boom Box.png Granite Boom Box 1


  • The Granite Boom Box is especially strong with flat damage modifiers as it fires very fast. The Ring will increase its damage output substantially.
  • Defense reduction such as Armor Penetration, Ichor and Granite Surge all give it a significant increase in damage against higher defense enemies.


    • Nerfed damage from 15 to 12.
    • Now an Electronic instrument.
    • Now grants Empowerment - Empowerment Prolongation I.
  • Damage decreased from 18 to 15.
  • Now uses 5 inspiration up from 4.
  • Damage increased from 12 to 18, duration increased from 5 seconds to 10.
  • Introduced.