ese, it really depends if the brand is good or not. I've used refurbs and haven't had any problems, but if your budget is low and the amp is cheap, you can go for it.
A refurb should be the same quality or better than a brand new amp. At least that's what companies say.
Most of the time it's cheaper for the companies just to replace the whole board than try to troubleshoot and replace a specific part, most refurbs are essentialy a new amp in a used body
how much power do you need? cuz if the model is TX1005D is overrated, it should put between 700-900w rms at 1 ohm. If the price is good, then get it. It should be lower than 160$ to be a bargain.
I had an amp refurbished and it came back with more power and souded better than before it broke. Would definetely buy new or refurbished and not "used and abused!"