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100V EL34 Single End Class A amplifier

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This new EL34 single end class A integrated amplifier is 100V version and specially made for a Japanese customer. The circuit is classic 6SL7 twin triode drive EL34 in SRPP mode. It is a typical EL34 class A amplifier in pentode connection. The output power of this amp is 7W.

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The power supply for EL34 SE amplifer, a 250VA EI power transformer, Cornell Dubiler 320uF/450VDC electrolytic capacitors and 10H/250mA choke were used. The CLC filtering circuit and the parts we seriously selected and applied keep high S/N ratio and very low noise of this amp. I can not hear any hum from my speakers.
 

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This is the power transformer which is custom-made for this amplifer.
Power: 250VA.
Steel core: EI H14 in 0.35 mm thickness
Core size: 96x67mm.
 

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All the new transformers are hand-made with high quality. The EI 114 power transformer provides enough and stable power supply for the amplifier and tubes. The EI 96 output transformers achieves wide frequency range, musical and extended sound stage. Impressive!
 

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