The Etude product line has excellent specifications such as a full power bandwidth extending from as low as 20Hz up to 80 kHz and a low insertion loss of less than 0.5 dB. The Etude transformers have a 4/8 dual secondary with equal performance. This excellent performance is available at a competitive price.
At the moment, the Etude product line consists of 2 single ended transformers. Tube designs using 300B, 2A3 or pseudo triode KT88/6650/EL34 , either in single or parallel tube operation are supported. The heart of the Etude range is a double-C grain oriented SiFe core.