Andrew Liszewski. is a senior reporter who’s been covering and reviewing the latest gadgets and tech since 2006, but has loved all things electronic since he was a kid. Following buildable versions of. Optimus Prime. and. Bumblebee. , Lego’s latest collaboration with Hasbro is also its first Decepticon. The. 1,505-piece Soundwave. , which is three pieces smaller than Lego’s 1,508-piece Optimus Prime, stands just shy of 13 inches tall and is Lego’s first Transformers set to include a sound brick — but you may have to continue making transforming sound effects yourself. At $189.99, Soundwave will also be Lego’s most expensive Transformers set to date when it goes on sale starting on August 1st for. Lego Insiders. (the company’s free loyalty program) and August 4th for everyone else. Optimus Prime is currently $179.99. , while the much smaller. Bumblebee is $89.99. . As with Optimus, Lego’s Soundwave converts from robot mode to cassette player mode without requiring any disassembly.