I just got this from LTA today:
With all beta testing and feature enhancements now completed, Linear Tube Audio is excited to launch the new MicroZOTL Preamplifier this week. We are extending our pre-sale through Wednesday, July 18. There are only six days left to get your MZ Pre at the temporary pre-sale price of $3850! The price after the pre-sale will be $4450.
Our fully realized MicroZOTL Preamplifier has been upgraded from 64 volume steps to 100 steps – with the smallest step ¼ the size to ensure precise control at low levels. Additionally, we have upgraded the volume control to ceramic printed circuit boards are now using OHNO wire on the output to further improve the sonics.
We look forward to sharing the newest addition to the ZOTL family with you. As each amp is built to order, please allow for 10 days to 2 weeks lead time.