Addictive Pro adds more complex oscillator configurations, a better effects implementation and a hot-rodded arpeggiator, but has surprisingly dropped the very useful four-track looper of the original Addictive Synth.
There are two AJH modules on review: the Sonic XV, based around an early 24dB diode filter from the Musonics Sonic V; secondly, the discrete transistor-based Ring SM, which can double as a five-input mixer and incorporates a pair of sub oscillator generators.
Qu-Bit’s Wave is presumably named after the Wave (wav) format samples it plays — up to four of them at once. A 4GB MicroSD card is included, ready-populated with drum hits, vocals, synths and sound effects, easily enough to get you going...
The Studio Electronics Tonestar 2600 is a complete analogue synthesizer voice in just 32hp. It consists of a single VCO, a sub oscillator and noise generator processed by a four-pole low-pass filter based on that of the legendary ARP 2600.