DIY tube push pull monoblocks I recently finished (EL34 + 6N6P/ECC99) : r/audiophile
Second modification of the line stage with ECC99 of the Vanderveen MCML05 pre-amplifier”
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el escorpion" Line Stage
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ECC99 SRPP Headphone Amp
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JJ ECC99 Preamp Tube | ECC99 | Electro-Harmonix
ECC99 push-pull build with JCM800 preamp - the JCM Eight Hundredths - Music Electronics Forum
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DIY 12AX7, ECC99 MiniAmp | DIY Guitar Freak
Single Ended ECC99 - 6C33C Amplifier with regulated tube PS
