Re: Alpine PDXF6 or Soundstream REF4.760
I personally hate how the Alpine PDX series handles the highs/mids. Sounds very high, sharp and unpleasant to me. I used the F4 though, not the F6. I probably wouldn't recommend the PDX series to anyone looking for a new SQ-ish amp. I switched to the JL Slash v2 however and was thoroughly impressed with the sound it produced. Highs were much more smooth and overall it sounded like a new set of speakers. No experience with the SoundStream however.
Headunit: Pioneer 80PRS
Front: Tantric HDD Components
Sub: Single JL 12w6
Amps: JL Audio Slash 450/4 v2 , JL Audio Slash 500/1 v2
Wiring: Knu Krystal Kables, Knu 4ga