Please let us know if you run into more problems.
It is not big trouble but if I try to use more than 4 channels likely: BeeThree a => dac; BeeThree b => dac; BeeThree c => dac; BeeThree d => dac; BeeThree e => dac;
then I get very bad sound :-( Maybe there are way to solve this?
As Adam pointed out, the ugen's maybe be using too much resource. This is possible but unlikely in this case, since BeeThree's aren't that CPU intensive (BeeThree use FM). Another possibility is that you are clipping at the dac because you are summing too many inputs. In fact, a quick experiment clips at 5 BeeThree. If that is indeed the problem, then it's easy to a) simply change the gain at the dac (not recommended, since dac is global) or... b) sum the BeeThree channels into a gain, and control the gain at that point (recommended): // sum into gain BeeThree a => gain g => dac; BeeThree b => g; BeeThree c => g; BeeThree d => g; BeeThree e => g; // change the gain at g .2 => g.gain; // ... Hope this helps. Best, Ge!