The 300W all-tube bass head with its 8x10 cabinet — the amp that invented the modern bass rig.
Ampeg's own dating/support text carries an explicit warning: lethal voltage is stored inside tube amplifiers even after power-off — the SVT and V-series in particular should not have their chassis opened by anyone without experience. Read the serial from the outside.
Marks that can be entered for this maker: Serial number (plate), Transformer code.
Nothing predates 1969; components only push the date later.
Sold-listing reading: fair $1,201, good $1,742, excellent $2,843 USD · 3 sold listings (thin sample — indicative only) · as of 2026-10-24. Thin sample: three observed completed sales of vintage SVT heads - two Reverb sold listings (Oct 2026 window) and one eBay sale (Aug 2026, USA-made 1980s head, $1,742). Tiers shown are the observed floor/median/ceiling of this sample, not condition medians; year of the head drives price more than cosmetic condition.
Evidence: Blue Book of Guitar Values — ampeg · reverb.com · +1 more