Sorry been busy but yes I'm still powering my rig with the PLX 3602. After hearing the Itech on my SRX, I like to switch over to some better amp.
Thanks all for the reply.
If the amp was an original I-Tech the processing is based on the dbx 4800. If it was an I-Tech HD the processing is BSS London (and is required for V5 tunings of JBL products).
If you used an official JBL preset for your SRX boxes, know that *everything* about that preset was done to make your speakers perform.
Really, it's very simple. If you're happy with V4 you can buy original I-Techs. If you're using the newest SRX models you will find no V4 tunings and original I-Techs won't help you much (other than being a good sounding amp) therefore.
The other thing about original I-Techs is the cost of repairs at the Crown factory. Plan on $400-$600 per unit if you need factory service.
You can't get official JBL presets for Lab Gruppen amps and considering who owns LG now, I wouldn't expect Harman to be in a cooperative mood.
I see you as having 2 options: buy I-Tech HD and stay under the Harman/JBL/Crown umbrella or sell you SRX speakers and purchase a speaker system for which Lab Gruppen can use the speaker manufacturer's preset files and buy the Labs.
I get the impression you can buy Labs cheaper than you can purchase I-Tech HD and that's why you keep coming back with the same questions, both posted and via PM.