My ADA is one of my most beloved pieces of gear. It’s analog flanging is pretty much unmatched by any device since. I’ve never heard a plug-in or digital emulation that came close. If you ever have a chance to buy one and the price isn’t insane…DO IT! There was also a re-issue products briefly in the 90’s but I don’t have any first hand experience playing one. Classic bucket brigade circuitry.
Especially cool to integrate with an analog synth since it also has voltage control!
Strymon, a new music electronics start-up has just released the SVpre, a tube preamp modification for the Line6 Spider Valve series of amps. According to Strymon, the SVpre improves dynamics and tone and makes your Spider Valve sound more like a “real” tube amp.
The product seems to be getting quite a bit of attention over on the Line6 forums.