We upgraded our beloved Fairman valve Pentode Preamp and mastering Comp/Limiter with awesome and rare Telefunken vintage military valves from the 1950-60s.
This upgrade brings to our preamp a very important part of the sound of the modified Telefunken/Siemens V72's and Neumann/Geiling preamps which use Telefunken EF806S tubes like the original Redd 47. Beatles console. Read this article on preamps to learn more about this important part of the sound chain bringing out the best from your microphones.
After fixing the VU-meters backlights (LED upgrade) and replacing the 4 tubes (RFT and Sovteks) with two Telefunken ecc801s for the preamp section and Telefunken ef806s for the Gain makeup section, we could not be more happy with the open, clear and penetrating sound of any source that has been tested from voice to guitar, bass and drums, the results of this upgrade have been nothing short of incredible!
Worth the two weeks research on forums and talking to the maker in Denmark for advice, then hunting on the web for these legendary gems!! Precious!