Go through your entire signal chain and look at each gain stage to see where exactly you are clipping. If its before your A/D converter, this must be fixed with either lowering something or everything before the converter and/or using some sort of hardware compression/limiter.
But I would not use a compressor or limiter when recording because in 2bit recording, there is NO NEED to be recording this hot. Your peak can be anywhere between -6dB and above -20dB. So you can have your peak at -22dB and it will sound the same as if it was recorded at -0.01dB.
24bit has 256 times the resolution than 16bit recording, so do not record HOT Hot Hot!!
Thank me!
CJ