The meaning of the Acronym PTB is...

PTB is

• Passive Treble and Bass

More Meanings For PTB:

• Passive Treble and Bass
• Physikalisch Technische Bundesanstalt
• Physikalish Technische Bundesanstalt
• Physical Therapy Board
• Photonics Tech Briefs
• Script (PubTech BatchWorks)
• Project Test Bed
• Punish The Best
• Payload Timing Buffer
• Pave The Bay
• Powers That Be
• Phlebotomy
• Physical Therapy Board
• Panthera Tigris Bengalis
• Personal Transport Bot

PTB is also in:

• Electronics
• File Extensions
• Laboratory
• Media
• Military
• NASA
• Physiology
• Positions
• Transportation
• Unfiled
• Universities
• US Government