ADSR Envelope Generator based on the Roland's SH series
The ADSR SH Envelope Generator design was based on the Roland's SH synthesizer series. It combine two important features: precise controls with wide-range parameters. This module uses 6 HP of space and consumes a small amount of current from the power supply. Its simplified design and reliability makes it a good additional ADSR choice that fits perfectly in any Eurorack system.
http://www.electronicmusicworks.com/eurorack/adsr-sh.html
No info about availability.
$89