Hi Srajan, thanks to you I've paired my SIT-1 with Nenuphar and they are truly glorious. But I'm thirsting for a DHT preamp. Where would you go for one of those? Gary
Allnic and Vinnie Rossi both make direct-coupled DHT preamps, meaning there's no output transformer or coupling capacitor between the direct-heated triode and your amplifier inputs. That takes out a common limiting factor on bandwidth and speed. The Allnic is nearly twice as costly and uses a multi-stage circuit with additional input/driver tubes. The Vinnie Rossi L2 uses just a single pair of output triodes with a 2.5/4.0/5.0V bias selector to make tube rolling possible between PX4/25 to 45 to 2A3 to 300B to more specimens. I've already heard and reviewed the Allnic. I'm already scheduled to review the Vinnie Rossi but won't have it until March sometime. I have a feeling that the L2 will be the one you ought to be looking at but won't know for certain until it gets here. I'll test it on the SIT-1/Nenuphar combo so my review will certainly be very specific relative to your own situation. The Vinnie Rossi preview is live already and the Allnic review is in the archives. Srajan
