The boombox in The Multiverse Project appears to be obtained through a quest-style item hunt, and the available public walkthroughs point to a multi- step route rather than a simple shop purchase.

What the guides say

The walkthroughs describe this general path: go to the laboratory area, enter a vending-machine code to unlock a secret section, collect a set of hidden items around the map, then return to the lab to enter the next code and continue to the final launch area. One guide says the item you get at the end is the boombox after using the rocket/shuttle sequence.

Step-by-step route

  1. Spawn in the game and travel to the laboratory area in the northwest of the map.
  1. Use the vending machine and enter the code sequence shown in the guide to unlock the secret area.
  1. Buy or collect the night-vision goggles needed for the search phase.
  1. Find the hidden disks/hard drives scattered across the map.
  1. Return to the lab, re-enter the code, then proceed to the rocket/shuttle area.
  1. Enter the final code, shown as 1985 , and complete the launch sequence to receive the boombox reward.

Important note

The public clips are a bit inconsistent on the exact food-code wording, but they agree on the same overall quest flow and the final 1985 launch code. Because Roblox event items and game quests can change, the exact steps may differ slightly if the game was updated after those videos.

Practical tip

If you’re doing this now, focus on the map hunt first, then return to the lab only after you have every required hidden item; that’s the part most likely to block progress.

TL;DR

Get to the lab, unlock the secret area with the code sequence, collect all hidden disks/hard drives, then go to the rocket/shuttle and enter 1985 to claim the boombox.