LDR Active Preamp - does it exist?


I am using passive LDR (Light Dependent Resistor) volume control LightSpeed Attenuator. As much as clarity and all the good stuff about this little preamp, I wish I can have some gain for my low sensitivity amplifiers. Is there any existing active preamp using LDR volume control?
nguyen787
The only one I know of that's not $40k is the old Melos SHA Gold. There's one on listed here now if it hasn't been sold. I've had an LDR for years. Wouldn't swap it for anything. I'd change amps first. Also, you may want to check with Uriah Dailey on the DIY Audio forum to see if he can offer a solution.
Using Lightspeed, I can get the sound level at average 90 dB with high sensitive speaker 98 dB. The dial is near to max, position between 2 PM - 3 PM. Low volume tracks are the problem.

In anycase, I would like to optimize our system using the amps that I have in hand. It seems that these amps are not best choice. The main reason I am going with 845 output tube is the power 27 Watt that 300B SET can not provide. It seem low sensitivity defeats the purposes.

The Truth is an interesting concept. It does not seem to be popular in audiophile community.
Nguyen787 if you feel like you need to move off of the Lightspeed I`d be very interested in it.
Regards
Steve