I have a pair of Dynaco ST-70 Technitrol Z-326 output transformers (454226, 454326) for sale.
These came out of a '68 (CTS bias pot date 6740) ST-70 with a bad output transformer and trashed driver board. They were tested based on page 2 of this document:
http://www.curcioaudio.com/Stereo%2070% ... msl-R0.pdf
$100 + $20 shipping to 50 U.S. only. References available.
Email: my forum handle (at) yahoo (dot) com
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