There's a lot going on with this Vibrolux. Firstly, we blackfaced it so it would sound as good as possible.  Then we installed Hammond mains transformer so it would run on 240V.  Then,we changed the bright switch to reroute the reverb to Channel 1, so Channel 1 would double as dwell and tone controls for the reverb signal.  It doesn't sound much but if you like reverb you could well love this.  We do.  This aside the amp's pretty darned original, although we did have to change out the original speakers because they weren't cutting it.  Has to be heard.