The Valve Wizard
An Audiophile-Grade Tube Preamp (aX Sept. 2006)
MC Phono Preamp and SRPP & GKA
Three ECC83-Based Tube Phono Preamplifier Circuits - EEWeb
7025 Phono Circuit From Tube Manual | diyAudio
RJM Audio - Tube passive phono preamplifier
Audio Research SP6 Tube Preamp
Groovewatt a DIY Vacuum Tube (Valve) RIAA Phono Preamplifier Project
MC Phono Preamp and SRPP & GKA
6DJ8 Tube RIAA Phono and Line Preamplifier Schematic
Groovewatt a DIY Vacuum Tube (Valve) RIAA Phono Preamplifier Project
VinylSavor: The Octal Phono Preamplifier, Part 1 : Circuit
Tube Phono Pre-amp
Hi-end phono preamplifier
Groovewatt a DIY Vacuum Tube (Valve) RIAA Phono Preamplifier Project
LR Phono Preamps
Pre phono 2
JE Labs Arkiv (up to 2008): JE Labs phono and line preamp
Schematic hunt: RIAA Phono Preamp | diyAudio
Groovewatt a DIY Vacuum Tube (Valve) RIAA Phono Preamplifier Project
miscellaneous-schematics1
miscellaneous-schematics1
The Valve Wizard
Schematic - Groovewatt Tube (Valve) RIAA Phono Preamp | Elettronica
