The use of this machine is relatively simple despite the abundance of available parameters (fifty anyway) and it must be admitted not all very useful on this type of device, such as settings height, width and depth of a piece that is supposed to simulate DYNACORD. A bit like Yamaha had done in his sublime REV 1, but this level of performance was not the same ..
Although the quality of an effect and the occurrence of a reverb is somewhat subjective, the quality of simulations has never excited, reverbs sound relatively cold and impersonal just over an SPX 900 YAMAHA.
A little disappointed with this model DYNACORD. They did much better later .. If you want a "vintage" is another model for you ..