I've tried JL slash series (75 x 4), PPI PCX (125 x 4), and Diamond Audio.

I now run Zapco digital amps and I have to say it is the nicest amp "musically" that I've owned. Most noticeably in the high range - tweeters seem to light up nicely with these amps. mid - low range sounds as good as any others I've tried.

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ECLIPSE H/U - ZAPCO DIGITAL SERIES AMPS - DIAMOND AUDIO HEX/TDX SPEAKERS/SUB