Gryphon Prelude Frequency range: 0,2hz~2mhz +/-3db; THD-0,006%; 9kg.Gryphon Encore Frequency range: 0,25hz~250khz +/-3db; THD<0,05%; S/N>100db2x500w 8Ω, 2x1000w 4 Ω RMS, 48kg, 2x1300VA Holmgreen toroidal transformer