Iron Maiden - Somewhere In Time 1986 guitar tone (Original 80's guitar sound...)

In this video I demonstrate my SIT tone. Its NOT produced by Gallien Krueger amp. The sound comes from my pedalboard, with a tube preamp, a stereo chorus and speaker simulator. My chain is: Gibson M3 --- Mesa V twin on Preamp output --- Boss GE7 eq --- Rockman Stereo Chorus --- TC Alter ego delay --- Palmer PDI 9 Speaker simulator