Does anyone have experience with using Nuvistor tubes in preamps? They were used in AKG C-12a and Neumann U-47 microphones, as well as in Ampex MR-70 tape recorder electronics. I am curious as to how they stack up, sound-wise, to full sized tubes , or, for that matter, to transistors or IC opamps.
Conrad Johnson and Musical Fidelity used them in preamps years ago.
TNT PreAmble N - DIY nuvistor stereo preamplifier [English]
TNT PreAmble N - DIY nuvistor stereo preamplifier [English]
Noiser than one would expect from looking at them...I had a lot of work with them as preamps and down-converters in ham radio land back before LN transistors.