The SC-05 and SC-07 is PQLS over HDMI for CDs only WRX_Rocky,
Only when I played a music CD did PQLS kick in, and only if using Stereo
It's functioning exactly as it should..
The SC-05 and SC-07 is Stereo PQLS over HDMI with a PQLS capable Pioneer blu-ray player
The SC-25 and SC-27 has the multi-channel PQLS over HDMI with a multi-channel PQLS Pioneer Blu-ray player
The SC-09TX is multi-channel PQLS over iLink with any iLink PQLS/HATS capable DVD/SACD/Universal player (DV-59/79AVi etc)
As far as "better" AQ.. I believe it offers an incremental improvement.
Remember though, PQLS is for removing jitter.. and your SC unit already has about the lowest jitter available. PQLS just brings jitter down to almost zero with the SC units.
Jitter with HDMI input:
50ps Pioneer SC-LX81 (SC-07)
the anti jitter performance on the SC-07 is so great, I doubt PQLS matters very much (even though I am a proponent of it)
good reading here by welwynnick (including jitter performance from a variety of different AVRs):https://www.avsforum.com/avs-vb/showt...1#post16249931
good article here
on HIFI News by Paul Miller on PQLS with the SC-07(SC-LX81) and BDP-LX91 (BPD-09FD)
There's some additional links on PQLS on the first page by FilmMixer, welwynnick and catapult.
I did a short observation here
with my SC-07 and BDP-51FD.
There's also great review by eldithomaso compariing several Players with his SC-07 here
Graphicguy's observatoin is here
with his SC-05 and BDP-51FD
Very sorry about your job situation, hope things work out for you soon.
Best of fortune to you and yours.