I while a go it was mentioned that the AVR300 could not produce a proper subwoofer test tone in the setup menu. This was replied to by Andy Dutton I believe that they were working on a software update to correct this and that it was in beta testing. I can now confirm that the new version of the software is available, version 2.84, from your local dealer. Not only is there a new version of the software which I can confirm DOES produce a good quality and measurable subwoofer test tone but there is also included in this update a new DSP software upgrade. After applying these upgrades to our in store demonstration model I was pleased to see that the subwoofer test tone has been correctly implemented. I will also note that after listening to it once upgraded (not sure how influential the placebo effect is in this case) it sounded a lot more detailed and with much better steering of effects. I would be interested to hear, from Andy Dutton ideally, what changes have been made to the version 2.84 of the software other than the subwoofer test tone and also what improvements have been made with the DSP software if any. I'd like to finish this post with a "Well Done" to all at Arcam who continually strive to improve existing products as well as develop new ones which contrasts greatly with the Japanese policy of pushing out unfinished products and changing models every 6 months.