Older Eden bass amplifier. 500w into 4 ohms, 300 into 8. Just the amplifier portion of the very cool Metro combo. Killer sound, great power for almost any situation. With two channels, one has a solid state preamp the main has tube preamp and more flexible eq. The voicing control has a broken shaft = no knob. The control still works fine - hence the low price. From the pre St. Louis music era.