Hartke LH-500 Bass Head - 500W, 12AX7 high-voltage class A valve preamp circuit, bass and treble shelving, mid-peak EQ controls, bright switch, limiter switch with LED indicator, balanced XLR direct output, FX loop, 1/4" output connectors. dimensions: 19"/2U, dimensions: 483mm x 369mm x 83mm, weight: 10,5 kg