1968 Marshall 50w plexi Model 1987 Salvation plexi Brown Sound

This is my so called Salvation plexi as it used to belong to the local salvation army close by. This is one of my most frequently requested amps for studio recordings. I very famous guitarist has used it on his last two recordings (unfortunately I cant name him here as he endorse another amp company. This clip is the guitar straight into upper channel one only, which get kind of brown. However this amp has more tones. Lower chanel one great for a more smother sound and with the lolume a bit rolled off, A br, br,