Taking into account the OP's reference to a bit more brightness, AudioQuest Rocket 33.
In a speaker demo a few months ago (Dynaudio Special 40s), the Rocket 33 cable was initially used by the seller (all other kit was my own). There was definite "brightness" that, for me, wasn't entirely enjoyable. The seller swapped to Rega Quattro (split for single wiring) which gave a noticeably smoother sound with all other kit remaining the same.
As a sweeping generalisation (i.e. not always), silver coated copper cables tend to convey brighter sound.
For a few years, I used Fisual S-Flex Studio Grade cable (OFC; 2.5mm) and, in fairness, they worked perfectly well. However, within the past year, I moved to Van Damme UP-LCOFC (4mm) cable (all copper) which, to my ears, sound tonally richer, albeit not by much - some would say it's just a sideways move; YMMV.
I'm not a fan of "bright" so the above might help the OP to rule out the Quattro, Fisual S-Flex and Van Damme UP-LCOFC but, everyone hears differently so the experience of others may not be the same, even with the same cable.
@Crackles: Hope you find cables that work for you.
[edit] NB: +1 for Mark Grant if Van Damme cable takes your fancy.
Last edited by RockAddict; 28-04-2021 at 06:40.
Reason: Mark Grant reference
Kevin
Main system:
Sources: EverSolo DMP-A6; Sony UHP-H1 (disc player)
DAC: Denafrips Pontus II
Pre amp: Quad Artera Pre (is also the main headphone amp)
Power amp: Willsenton R8 amp (running JJ E34Ls) / Aiyima A07 (with Sparkos SS3602 Op Amps)
Speakers: Dynaudio Special 40s with Van Damme UP-LCOFC (4mm) cables
InterConns: Tellurium Q Black XLR; Morrow Audio MA4 - pre 2018 (analogue RCA); Mark Grant (coax x1); Atlas (coax x1)