Quantum Tuner

Quantum Tuner
Type	Frontal Cortex Cyberware
Rarity	Tier 5
Effects	Whenever another cyberware implant is fully used, Quantum Tuner instantly restores its Cooldown. (up to a max of 30/40/50 sec.) Cooldown: 60 sec. outside of combat Passive Effect: −10/12/15% Cooldown Time for all other cyberware.
Cyberware Capacity	45
Attunement	Intelligence
Attunement Bonus	+0.05% to all dealt damage per Attribute Point

Quantum Tuner - Overview

Quantum Tuner is a Frontal Cortex Cyberware found in Cyberpunk 2077. It is an implant that players can purchase and equip with the help of Ripperdoc.

This is extremely powerful cyberware that you can use to extend other cyberware like Sandevistan or Berserk multiple times in a combat encounter. The effect applies to all cyberware with cooldowns.

Quantum Tuner - How to obtain

Quantum Tuner is obtained at the end of the Phantom Liberty DLC. This requires you to do the King of Wands achievement. Not to spoil much. After you do this, and Songbird safely reaches the location, you wait a few days.

After that, she will contact you with the location of the cache. The quest is From Her to Eternity. You will find the cyberware at the location.