PROMETHEAN COMBO P3115UPROMETHEAN COMBO P3115UThe Ibanez Promethean P3115U (also designated as the P3115) is a highly portable, gig-ready 300-watt Class-D solid-state bass combo amplifier equipped with a 15-inch speaker and a switchable piezo tweeter. Designed specifically for traveling musicians, it packs the power of a large amp stack into a lightweight, compact footprint weighing just 17 kg (37.4 lbs).