B 15 Mugs
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Description: The holy grail of bass tone, now wearable. This design features the original U.S. patent blueprint of the iconic Ampeg B-15 Portaflex — the world’s first flip-top bass amplifier and a staple of recording studios for decades. Invented by Jess Oliver in the early 1960s, the B-15 delivered warm, punchy tube tone in a portable, genius design. Whether you’re a bassist, amp collector, or just someone who appreciates music gear with history, this vintage blueprint tee honors the innovation behind the groove. Perfect for low-end legends and those who worship at the altar of tone.
