Can I hook up two 4 ohm speakers wired parallel to the brigded channel? Wondering cause it doesn't show that on the page and is it safe to assume it would put out roughly double the listed power or somewhere close
You cannot unless you wire the two speakers in series. If you wire them in parallel, that brings the load down to 2 from the speaker and the amplifier sees half that in bridged mode and will be operating at 1 ohm. It is rated only for 4 ohms bridged (essentially working at a 2 ohm load). If you're going to use this amplifier, you should wire the two 4 ohm speakers in 2 channel mode only.