Lamp Soro PP audio signal, ( 2x6L6 ) 20 W, Class A, 6L6G, push-pull integrated amplifier, 4 V, for recording, 4x ECC82/12AU7, 4x 6L6G. The two-stroke, pure Class A tube design offers an outstanding level of reproduction. The Soro audio play was specifically designed for music distribution, not technical interpretation, and represents a Level 1 criterion Audio Play (UK).