I just bought this amp and i have had it in my car for a day or two. I have messed with the frequency and leverl adjustments on the amp. Background: HU is Dual XD 6320 The two subs im running off this are Orion XTR 12 inch. IWht 5.25 inch alpine Type-s. IN a small cabin so it rocks it pretty well. With this amp I can fit it in my cener console and it is 2 ohm stable. This little thing packs a punch and i have an approximate 1 inch roof flex and y dash actually flexes as well. The way i wired it is 4 ohm stereo load which is series wiring. YOU have so many options when wiring this amp. 1) 2 ohm stereo 2)4 ohm stereo or mono 3)8 ohm mono and or stereo. and so on. so with this small amp you get this much versitility. I personally have it at 4 ohm stereo and the leverl at about 1/2 and the freq at about 70 to 80. There is also low pass, flat and high pass. Overall. For this small of an amp I am so happy with its performance. Although Lanzar does put its name on some "iffy stuff" I don't think this is one of them. The opti-drive series is a good one from this amp all the way up.