90s Trace Elliot 600 watt bi-amp bass head with 12AX7 tube pre-amp + 2 2x10 and 2 2x12 home made speakers. Good condition.  The speakers: the Drivers: CELESTION SIDEWINDERS 12" & 10" - 8 ohms each The Cabinets: 2 drivers wired in series = 16 ohms (2x cabinets externally connected together in parallel = 8 ohms)(which means each side of the TE stereo can take a 3rd cab of 8 ohms: min for amp per side = 4ohms) (series:parallel is a common way for wiring up a 4x12 cab)