Synth Apps on a phone vs The Real Thing and a new Universal Active Filter

It's been a while since my last blog mainly because my 'day job' of flying an airliner has kept me very busy recently. I, like so many people Worldwide, have joined the 'Apple' family and ended up with an iPhone and an iPad. One of the interesting things I noticed was a number of Apps (Applications) that you can get for musicians including some quite good analogue synthesizer ones. There is a very good app from Korg, that recreates the famous MS20 synthesizer, and another from Akai. Both allow you to recreate some very realistic analogue synth sounds on your iPhone/iPad. The downside however is the lack of tactility that you get from the 'real thing' and you are left trying to get used to finger movements on the screen and that takes time to master. It's so much easier to just tweak a knob or switch on the real [...]