Re: Why Do Some Amps Have A "Normal" And A "Bright" Input?
On a stock tweed deluxe, the only difference is a bright cap between the channels, but on a lot of other amps there is scope to have a completely different voice in each channel. It is really like having two amps in one and is the predecessor to today's modern channel switching amps. It also allowed for two separate instruments to use the amp at once. Take the blackface bassmans: they are designed to have a bass into one channel and a guitar into the other! Not many people do that these days but people like elvis used to run his mic into scotty Moores guitar amp, and buck Owen's and don rich both plugged into a tweed bassman for years.
It can even save your skin. Once at a gig the house pa crapped out, so the singer/harp player in the band I was in ran a vocal mic all night into the unused channel of my twin reverb. Sure it didnt sound amazing, but it certainly had an old skool character lol. It is important to remember that these amps were built in a different era that had different needs and priorities to today. Also the needs and priorities we have today are a direct result of all of the innovations and experimentation of the past.