• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Building a Stereo EL84 auto bias PP tube amp

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Studio Nord

Member
Joined 2012
Just started to build this stereo tube amplifier based on 4xEL84 and 2x6N2P tubes from Die Röhre, Wulfert audio.
www.dieroehre1.com

Stereo PP Endverstärker (Leerplatine) EL84 autobias sym | on eBay (search)

If anyone has experience to build this kit, all tips will be much appreciated... Wondering particularly how to combine volume potentiometer with balanced and unbalanced input (any suggestions...). And if power transformer is not shield, it should not affect the quality of sound?
 

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alanwardbest

Member
Joined 2018
EL 84 from DieRohre!

Stereo PP Endverstärker (Fertigmodul) EL84 autobias sym.
Just seen your post and I went to Dortmund to pick up bits from Thomas Strüning(DieRohre) , Poland for transformers, valves, USA for some bits and China. Made/migged the case and had it chromed here in Southampton UK. SOUNDS really good through my old Richard Allan Monitor 80 loudspeakers. Now about to add phono stage, kit build tube possibly, did you add one?
Sorry I but realise you might have moved on from that time!
Pic of amp.
 

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