A mea culpa for me on the CODA 07x preamp making a hiss on my floorstanders (not RAAL SR1a headphones). This was really bugging me and some other folks on WBF were telling me they do not have a hiss. So tonight I removed my D-Sonic amp and put in a single AHB2 with the CODA 07x. The hiss was gone for the most part as was with the HPA4. The HPA4 seemed a tiny bit quieter.
It looks like I should get the CODA #8 amp for my floor standers sooner than later.
It looks like I should get the CODA #8 amp for my floor standers sooner than later.