Hello all, here are my first thoughts and experiences with the REDDI;
I've used it now for around 5 hours at home, 2 hours on a live gig and 4 hours rehearsal.
I really like the textured finish which helps getting a good grip on the REDDI. The first thing I did before experimenting with the sound and setup was putting a small piece of tape over the blue led
I tried different setups and gain settings using:
-(passive) ZON sonus studio 5 and G&L JB2 tribute
-Vovox sonorus instrument cable
-Diamond bass compressor (EQ disabled, comp between 9 and 11 o clock, master at noon = fairly light to medium compression with my passive basses)
-Avalon U5 (connected with the REDDI using a vovox JACK-JACK cable and a Neutrik XLR-JACK adapter)
-Crown XTI 2000 (running only 1 channel into a DIY 2x15 kind of Greenboy style cab using the kappalite 3015LF's)
-Sennheiser earbuds via the headphone out of the Avalon
Ok, First the REDDI alone direct into the Crown:
As expected giving not really enough signal to drive the poweramp. The sound was OK but not wat you would like to hear.
Then REDDI, COMP, AVALON:
Since the diamond comp is a instrument level comp, the output of the REDDI had to be around 8-9 o clock not to compress the whole signal. The Avalon had to be turned up quiet high to get the desired level to feed the power amp.
This was OK, but the sound was very similar to running the comp/Avalon alone without the REDDI
Then the COMP, REDDI, AVALON:
This is it! Ofcourse I thought so allready but wanted to make sure that I didn't forget other possibilities.
Like mentioned, I only use light compression and disabled the EQ of the COMP. After much listening/comparing I concluded that the COMP does not degrade the signal using these settings IME.
Then comes the REDDI; I used the gain knob between 9 o clock and fully open. The harder I drive the REDDI, the lower boost I need on the Avalon to get to the desired line level. I listened with my headphones carefully to determine when the total gain of the REDDI and Avalon was becomming to much, slightly distorting the signal. When only the slightest distortion was noticed (on headphones, not noticeble on the 15 inch speakers) I turned the avalon one click down (3dB). So I was able to blend the amount of character gain of the REDDI with the "clean" gain of the Avalon.
To keep the story short: My favorite settings are: REDDI at 12-1 o clock, Avalon boost: 5, (15 dB).
This gives me a very full, warm sound which I could never get using the Avalon alone. I was satisfied after this first day but not really really happy.
Then the Gig using the whole same setup and settings: We were in an acoustically terrible bar and soundchecking was not easy. But when I cranked the volume of my amp a litte bit: There was a very NICE, full bass sound; Clean yet full. Then the real REDDI smile came on my face

The line out of the avalon was for my crown, the mic out for the FOH. The soundguy was used to my avalon sound and allways liked it. He said that he was liking this new signal more.
Then maybe the best part for me: I use (wired) in ears (the mentioned sennheiser earbuds) from the avalon headphone out having only bass on them. The sound now is perfect! Very full and clean, like I have an amp sound through the earbuds.
So Although the REDDI is a DI and I don't want to rename it as a colourbox or preamp or whatever, I found a way to use it for my own stage amp, my earbuds and the FOH at the same time without sacrificing signal quality IMO.
And I think the best compliment for the REDDI is that I cannot do without it any more, tried without 5 minutes at the rehearsal and put it in the signal chain as soon as the song was over
Thanks Peter!