Jitter in vcos- Arp Odyssey related

[Synthfool at aol.com]

Relating to the recent "jitter in vcos" thread, I recently made a small
discovery on an Arp Odyssey-

In the later Arp Odyssey models, the noise source uses a zener diode for a
smoother quality of noise. The original designs used a "noise" transistor .
What is interesting is that the transistor style noise source caused
miniscule bumps and spikes on the power supply lines. The zeners don't and
thus the vcos behave in a more stable manner. After modifying an older style
unit, the pitch stability was noticeably improved.

-Kevin