So I am new to this forum so go gently!

Has anyone used this system with the Quantum Blender? If so, how was your response to it, pros and cons.

Never heard of that system, how old is the guitar?

Probably sounds awesome but with a MSRP of $605, you have to ask if your your signal chain from your L-03 p/u system to your amp/sound system will justify the cost.

https://www.kksound.com/quantum-blender

https://static1.squarespace.com/static/61b906bf15d92f0668e48354/t/65aeb812c4f9d70348ed6dbf/1705949209335/quantumblender.pdf

Currently, I run my dual/source guitars Into a Fishman Pocket Blender (I got used for $125)  into a Crazy Tube Circuit Sidekick into my Boss Live Singer or Everse8 amp.

https://cf3.zzounds.com/media/PocketBlenderOwnersManual-ddb4fd9a3d214590768df4ab0f484d6e.pdf

https://crazytubecircuits.com/sidekick

For vocals, I use a  condenser mic into either my TC Helicon Mic Mechanic 2 or a Headrush VX-5

I also have a K&K Trinity. A nice portable dual preamp I got for under $100. Currently there is a used one for sale on the AGF forum for $60 shipped.

What is the application? Don't buy it just because it's their top of the line, buy it if you specifically need that preamp. Acoustic pickups have serious limitations so the application often matters more than the relative quality.

Regarding the question, I don't have the Quantum but I have trinity systems in two of my instruments. I feel they're fine if you need to plug in. I would never use them for recording but I have them in cause I need to play live.