Tube Power amplifier using EL34 in Triode connection and CFB technique,paraphase inverter 12AX7

EL34 PP CFB

EL34 PP CFB

EL34 Triode connection Push Pull CFB Paraphrase Inverter Amplifer Schematic from Bartolomeo Aloia Project and Hammond Transformer

This is my first Tube Hi Fi amplifier, I choose to start from a  Bartolomeo Aloia project :
VTAF Volks Tube Amplifier The First by Bartolomeo Aloia
 you can find details on audiodesignguide page.

The project is based around a EL34 triode conection push pull.
The output transformer is a Hammond 1615 witch I would use in Chatode Feddbak connection.

Paraphrase imput stage and phase splitter is a  modified GY50 driver stage board .

Phase Splitter Prototipe Paraphrase inverter

EL34 triode push pull CFB amplifier schematic

Complete Preamplifier DIY Line Amp, RIAA EQ. Moving Magnet MM. Moving Coil MC

Complete Preamplifier DIY  Line Amp, 

RIAA EQ.

 Moving Magnet MM

 Moving Coil MC

Sony Esprit TA-E901 Preamplifier Audio Module Replacement, Substitute, Spare revision 1

My own project about Sony Audio Module 
Amplifier board for Sony ESPRIT repair.
TA-E901 Flat Amp Preamplifier 

My PCB GY50 Evolution Power Hybrid Amplifier

Here my new circuit boards about Aloia's amplifier GY50.