Aquatic AV AQ-MP-5BT-H & 5.75 Ohm Hog Tune

[hollywood63]

So I replaced the stock head unit in my 01 Classic with a Aquatic unit and I already had hog tune speakers.  It seems to break up at higher volumes.  The stock unit played louder  before breaking up. Do I need a amp with this set up or a amp and different speakers.  Not knowing jack about stereo systems I figured I'd ask before dropping anymore money. One other thing the auto volume feature doesn't work does the aquatic have that capability?

Thanks

[Coyote]

That unit only puts out about 18w RMS a channel. You will need an amp.

[Hossamania]

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[hollywood63]

coyote what would you recommend?