Khron

Re: Groove Tubes MD1b FET possible mods, upgrades, schematic?
« Reply #20 on: June 09, 2017, 07:53:48 PM »
That Sterling Audio one reminds me a lot of my several sE2200A's, with the single circuit-board, and mechanical structure.
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Gus

Re: Groove Tubes MD1b FET possible mods, upgrades, schematic?
« Reply #21 on: December 05, 2017, 08:55:36 PM »
Measured a ST51 transformer ratio at about 4.5:1

Re: Groove Tubes MD1b FET possible mods, upgrades, schematic?
« Reply #22 on: December 07, 2017, 05:14:21 AM »
Just made a comparison video yesterday. I dare to say i even prefer some aspects of this modded Md1b to u87. I used 220pF.


https://youtu.be/8jXq_JLj90k