Vintage 1970s Ampeg BLACKLINE SVT Tube Bass Amp Head

A vintage 1970s Ampeg Blackline SVT Tube Bass Amp Head, this legendary 300‑watt all‑tube powerhouse delivers the massive low‑end punch, rich harmonic growl, and unmistakable stage‑ready authority that defined classic rock bass tone. Built during Ampeg’s most revered production era, the Blackline SVT is prized for its rugged construction, hand‑wired circuitry, and iconic preamp voicing, offering deep warmth, articulate mids, and the dynamic response only six 6550 power tubes can produce. A true collector’s piece and performance titan, it remains one of the most sought‑after bass amplifiers ever made.