Thorium Mod Wiki
Terrarium Autoharp
  • Terrarium Autoharp item sprite
Stack digit 1.png
Electronic Instrument
Damage74 Symphonic
Knockback4 Weak
Critical chance4%
Use time8 Insanely Fast
TooltipUnleashes a prismatic burst of warbling sound
Damage empowers players with bonus:
Depends on color of attack - lvl I
RarityRarity Level: rainbow
Sell135000*13 Gold Coin.png 50 Silver Coin.png

The Terrarium Autoharp is a craftable Hardmode Bard weapon. It fires colored waving sound pulses in a somewhat random, inaccurate fashion. The sound pulses travel slowly and home in on enemies, and the weapon is automatic and fires very rapidly. Dealing damage empowers nearby players with a different level I Empowerment depending on the color of the sound pulse.

Its best modifier is Fabled.


Sound Pulse Empowerment Effect Duration
Red Empowerment - Damage.pngDamage I Damage increased by 5% 5 seconds
Orange Empowerment - Attack Speed.pngAttack Speed I Attack Speed increased by 3%
Yellow Empowerment - Critical Strike Chance.pngCritical Strike Chance I Critical Strike Chance increased by 5%
Green Empowerment - Movement Speed.pngMovement Speed I Movement speed increased by 5%
Blue Empowerment - Damage Reduction.pngDamage Reduction I Damage reduction increased by 4%
Purple Empowerment - Resource Regeneration.pngResource Regeneration I Resource regeneration increased by 5%



Crafting Station
Ancient Manipulator.pngAncient Manipulator
Ingredient(s) Amount
Terrarium Core.png Terrarium Core 9
Terrarium Autoharp.png Terrarium Autoharp 1


  • Each sound pulse is colored after each of the Terrarium Autoharp's strings.
  • Terrarium Autoharp is the only Electronic Instrument to not grant Empowerment Prolongation, as it instead grants Empowerments based on the color of the projectile created.
    • The levels of the Empowerments gained are objectively low for the point where you would normally obtain this weapon, however the variety of Empowerments gained more than makes up for this.
  • Terrarium Autoharp is one of two Terrarium weapons (along with Terrarium Pulse Rifle) to not inherently inflict the Terrarium Backlash Debuff, however both can inflict it through other means.