This amp is completely stock using NOS pre-amp tubes. Class A Combo Designed and built by Bernard Raunig. This is a true single ended class A amplifier, using a 5Y3 rectifier and a single 5691 pre-amp tube. With a volume and single tone control this amp really lets you hear the tonal differences between the tubes. It seems as if the frequency response has been shifted toward the midrange band.
Harmonics are rich and fairly balanced but the high end can get a bit bright.
Great in a darker sounding amplifier. Back to top Svetlana EL34 - If you want one tube that will do anything the Svetlana is money well spent. The mids are smooth and the top end shimmers. Nice swirling harmonic content. The construction of the tube is outstanding and I feel it contributes to the overall performance.