Passive volume regulator suggestions


I have read about several options, Lightspeed, Axiom Audio Luminous.
Lightspeed has dual resistor divider approach, loading less source output. On the other hand it does not have XLR in/outs. That is the main limitation.
Axiom has XLRs but is a single shunt resistor divider based, introducing lower impedance to source or making less regulation range.

I would appreciate for your thoughts and recommendations.
rokokono
If you absolutely need XLR consider the Warpspeed, that is what I use for XLR. it will be adequate for your needs but in comparison I do not think it is better than the Lightspeed. Another option would be to find one of the Reference Line passive preamps with the balanced inputs/outputs. Same with the Bent TAP. Although the Bent will run you significantly more to purchase.
You could also consider Goldpoint attenuators. They use high precision 50 ppm 0.1% resistors and have balanced as well as single ended products.

If you want a special curve or ladder network, contact Arn Rotecap (he's the owner) and he might build something to your specs.

http://www.goldpt.com/index.html