Magnetic phono preamp.
The Valve Wizard
MC Phono Preamp and SRPP & GKA
Marantz 7 RIAA Phonograph Preamp – Preservation Sound
fono-pré-amplificador-1 | Audio amplifier, Amplifier, Valve amplifier
Pentode Phono Preamp
RJM Audio - Tube passive phono preamplifier
MC Phono Preamp and SRPP & GKA
Tube Phono Preamp with passive EQ
6 Tube Stereo Pre
12ax7 Phono Preamplifier | diyAudio
Groovewatt a DIY Vacuum Tube (Valve) RIAA Phono Preamplifier Project
Spice and the art of preamplifier design, Part 2
need a good low parts phono tube preamp schematic.... | diyAudio
Borbely RIAA Preamp With Tubes - A Project Remembered and Revisited | audioXpress
The “Universal” Preamp | Cascade Tubes
Magnetic phono preamp.
Audio Research SP6 Tube Preamp
RCA 7025 / ECC803S / 12AX7A Tube Phono Preamplifier Schematic | Vacuum tube, Tube, Circuit
Groovewatt a DIY Vacuum Tube (Valve) RIAA Phono Preamplifier Project
6DJ8 Tube RIAA Phono and Line Preamplifier Schematic
Groovewatt a DIY Vacuum Tube (Valve) RIAA Phono Preamplifier Project
JE Labs Arkiv (up to 2008): JE Labs phono and line preamp
RIAA-2010
VinylSavor: The Octal Phono Preamplifier, Part 1 : Circuit
