The Supro 1777 Galaxy 4×12 Extension cabinet uses an oversized, “half-back” design with a partially open, angled top section sitting above an isolated, closed-back bottom. This hybrid design delivers the recording versatility and tonal balance of a vintage-flavored open-back top section, along with massive thump and low-end punch from the sealed lower section. The Galaxy 4×12 extension cabinet features switchable mono (8-ohm) or stereo/bi-amp (16-ohm) operation for use as independent open and closed 2×12 sections connected to multiple heads. The Supro Galaxy 4×12 comes loaded with Eminence CV75 speakers and is rated at 300W in mono or 150W per side in stereo. The CV75 speaker was selected to be used in the Galaxy series for its distinctive British tone that absolutely nails the sound of the most coveted, UK-made V30 speakers from the early 80s.