Ampeg PF-350 bass amp head. 350w (4Ω) Class D power. Small, light. Headphone output and line input for silent practice. As new. Works best with Ampeg cabinets (obviously)- an Ampeg PF-115HE cabinet is available separately, also as new. Wonderful classic Ampeg thump! 
Could also be the perfect back-up amp head and small enough to fit almost anywhere...