What i have here is texas stars newest sweet sixteen model the dx 1600x . It has 8 dei 2879 transistors and I believe 2 are blown . I looked at all the combiners in the amp and only found one of the combiners are burned so i am  selling as is for parts or not working   When i was using it i only drove it with a 65 watt driver which let me cruise at 1500 watts and soon as i seen smoke I shut it down fast . I believe all someone would have to do is put 2 dei transistors or send it to galaxy repair in escondido california and they told me that it would probably cost me possibly around $130 bucks to fix . I have another amp so im selling this one . I will ship as soon as i recieve payment again this is not working and not perfect ..Good luck offerding