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I wonder if it's worth trying to do some measurements at the listening position -- I've been meaning to do this. WIll only apply to my room and have all the usual problems of not using a proper rig or anechoic chamber, but I've been meaning to do it anyway.
Wonderfull idea Sir. It is more than I cold do, since I have no measurement equipment at all. I would be very eager to read about your results.
 
Wonderfull idea Sir. It is more than I cold do, since I have no measurement equipment at all. I would be very eager to read about your results.
Will update this thread when I do! But note it will not be of speakers but of the combined effect of room+speakers (+DSP).
 
Hello Folks.

I have added these two gizmos to complete my small humble "AV System".

The one on the left is FiiO BR13 BT receiver/DAC, priced at only 59 Euros (delivery included) from official german FiiO shop. Device connects and works reliably and not overly offending with relatively transparent Abacus C Boxes when I use it for podcasts and youtube videos. Compared to BT connection, when Toslink is used to connect the TV set and DAC, sound is quite noticeably better when playing Blu-ray discs on PS4 (highs are more extended and better defined, resolution and spaciousness are better).

The one on the right is Abacus Linetreiber Variabel 2020, which is primarily a puristic preamp (developed with C Boxes in mind) and powerful headphone amp. It work nice with my power hungry Fostex T50RP 50th Anniversary planars and I use it for active volume control. Subjectively it sounds like my AV System has slightly better tonality and dynamics at very low listening levels and slightly better bass control at moderate levels: https://www.abacus-electronics.de/produkte/zubehor-diy/linetreiber/linetreiber-variabel-2020.html

Cheers.:)
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