We have finally found some free time and finished soldering the new module for our 4-channel frame system that is a close copy of the famous 312 mic preamp. Our module is highly flexible: it's posible to incorporate 3124+ mod, servo mod and everything is relay-switchable. And yes, this preamp includes the DI jack as well.
We plan to release the first batch of the boards and front panels in the beginning of the summer. Stay tuned!