
Having found my way fairly quickly around the Roland AT350C organ it is quite clear this isn't an organ that can be easily used for concise voicing on the fly...either creative gigging or playing off the cuff music where particular styles/voices are essentially required without keeping any audience waiting while you fumble with the buttons. Apart from the Hammond type drawbars which of course can be quickly changed as one plays it as a typical organ, the rest of the voicing from solo voices (sax, flute, etc) through to orchestral (strings etc) and everything in between is a very long-winded multi button pressing situation. This due to there not being any individual direct access buttons for anything apart from a very small selection of direct access solo voices which might be used in a more lazy way.
Luckily this is fine for me as I tend to spend time creating sets of registrations to my liking for various uses anyway, which can then be stored as usual on a USB stick, with the loading of any set then being virtually instant. For jamming purposes with the other players in my circle of friends I can simply call up any registration set and either not use a rhythm style which I might have connected it with or, if playing solo, activate the rhythm style as usual.
My method of registration storage on USB memory stick uses fast to find folders for each type of music (jazz, Latin, pop, theater organ etc) within which different registration styles are then placed. It seems to work well.
I can't however see the instrument being popular with, for instance, the thousands of average Tyros players...there are no comic style colourful pictures on a display, and no fairy lights everywhere. The AT350C is what I would call a studio musician's styling which isn't based on homely looking graphics to look pretty. This is OK as it sets the AT350C apart from the keyboard consumer brigade's idea of home entertainment based imagery and technology. I like plain.
One irritation though is that it is very easy to unintentionally touch and trigger the row of buttons between the two manuals when playing, which is annoying, and is probably something I shall have to seriously look out for. When playing the black keys my fingers do tend to move dangerously towards the back of the key if I'm not paying attention. When getting jazzy I am apt to become a lot looser in my finger positioning. Some of the chords are so convoluted I tend to add expressive fingering to match which can get me triggering a rear button by accident.
After quite a few hours of exploring the voices, styles and choice of the parameters available the organ should be an excellent addition to my gear as a main instrument. It can also be used with the Roland backing module BK-7M which I already have, adding if desired hundreds more voices and styles, though it then becomes necessary to pre-programme this unit as well because finding voices quickly on it is also impossible. Linked with a keyboard I used in the past two footswitches mounted one above the other (so the keyboard and backing module both work together when pressed) and then a set of registrations matched between the organ and backing module can be stepped through in sync. The AT350C doesn't really need any extra backing, but some of the voices on it (sax particularly) are not as convincing as on the BK-7M unit. In fact for the price of the organ I would have expected a far better quality and selection of voicing. The unconvincing vibrato on one of the sax's has a very dated 1980's sound and it's puzzling that the techs at Roland have allowed this to be included in a 2011 model. In my opinion, Roland's description of some of the voices being 'Supernatural' is optimistic. Compared with some of Yamaha's Tyros super realistic voicing the Roland stable of voicing is, to my ears, left behind by several years. This mainly includes a good few of their wind instrument emulations. I may be wrong, but I don't think that Roland use many 'sampled' voices from the real thing, like Yamaha do, or if they do then they are very short and doctored to repeat a vibrato in a mechanical way. There are no built-in typical of instrument inflections that I've come across yet.
The technology appears to be noticeably dated.
My conclusions are that with careful selection of voicing, which by the way is already pre-set in stereo (something I found to be extra work on the Tyros where everything is placed 'centre stage' and has to be panned to left, centre or right for the best effect), the organ can however sound very full and up there with some of those costing a few more thousand. It just requires more patience to tweak the sounds.
So after initial impressions I award the instrument overall something like 7 out of 10 for my own personal playing requirements. Any negative issues I shall have to live with.
At the risk of all that being very boring

Pete