i have 2 mint ab 500.1s forsale mine with box and romote bass nob amps run at .5ohm each daily and do 4700w rms each at .5ohm retail on these are $2000 each ill take $875 each shipped
Just a thought guy, but you don't provide much information here. What brand are they - how old - how have they been used - what condition are they in... people want to know things like that.
I doubt you will see people running to hand you $900 on your word that you have an amp that does a ton of watts - if they have no clue what it looks like etc.