OK, let me qualify this review a bit before I start.
First, I have only had the cabinet for a few weeks, and so far have only had one rehearsal. So a lot of the playing I have done through it have been in my bedroom.
Second, I just got the iAMP too, so I am learning about the capabilities of both the head and cab at the same time.
First impression: This setup is LOUD!
This is the first head and cab setup I have ever owned. I was always a 'big loud combo' guy. I had an Eden Metro for a little over a year, and while the tone left a little to be desired, the combo was loud enough for any of the gigs with my oldies band. After the Metro was stolen, I replaced it with a Peavey BAM210 combo. Louder than the Metro, much better B string handling, and IMHO better tone too.
I was happy with that rig in the oldies band. When my originals band started playing out more, I was having to push the amp a little harder. Then one night at a club I pushed it so hard it went into protect mode, right in the middle of our newest song, which centers around a tapped bass ostinato. Not cool.
I feel that this will not be a problem with the new setup. At rehearsal, I had the pre gain at 12 o'clock and the volume at about 10 o'clock. With the BAM, the drummer had a hard time hearing me, unless I turned up so loud that he had difficulty hearing the guitar.
Something about the way that the head and cab are both voiced allowed me to play at a lower volume, and still be heard.
The lows are insane with this setup! I usually boost the bass on my Nordstrand's onboard about 3 to 5 dB. I had to set it flat, because the lows were so authoritative. I did have to boost the highs a bit more, but I attribute that to the fact that the tweeter on the Schroeder is closer to the floor, and not angled up a bit like on the BAM.
The sound was very full through the entire audio spectrum. The low B was thunderous, but still retained clarity. Something that I had a big problem with on the Eden, and to a lesser extent, on the BAM. To get clarity on the lowest notes with those amps, I had to sacrifice the lows.
The EQ on the iAMP is very easy to use, and very intuitive. And presets one, three and four are voiced precisely how I would do them if I designed my own amp. One works great for bringing out the lows, three is great for fingerstyle, and 4 adds some crispness for slapping, without getting harsh. I am sure that the tweeter that Jorg uses has something to do with the lack of harshness in the highs, too.
As I said, I am still learning the capabilities of this setup, but so far, I am very impressed with the cabinet and the head. And very happy too!
I hope to post a better review after a couple of more rehearsals and a gig.