I too want to bump this thread and thank 213cobra for this suggestion; and to encourage anyone who is looking to roll tubes in their MHDT to consider using the 5670 to 6922 adapter.
I installed the adapter in my Istanbul and rolled in a 1970 Siemens E88CC. Stunning results. Absolutely an improvement over every 5670 I tried. If you’re considering trying this, don’t hesitate! It’s worth it.
I installed the adapter in my Istanbul and rolled in a 1970 Siemens E88CC. Stunning results. Absolutely an improvement over every 5670 I tried. If you’re considering trying this, don’t hesitate! It’s worth it.