PREAMPLIFIER:

The three models are, in contrast, essentially differenciated in the size of their power supplies.
The YBA Signature standard is equipped with two 160 VA transformers and thirty-two 4,700 ВµF capacitors
The YBA Signature 4 Chassis (special power supply) is equipped, among other things, with four 160 VA transformers and sixty-four 4,700 ВµF capacitors
Finally, the YBA Signature 6 Chassis preamplifier (photo above) has totally separate LINE and RIAA power supplies. This is implemented with :
four 160 VA transformers and sixty-four 4,700 ВµF capacitors for the LINE stage, and two 160 VA transformers and sixteen 4,700 ВµF capacitors for the RIAA stage

POWER AMPLIFIER:

The three models are, in contrast, essentially differenciated in the size of their power supplies and the number of transistors.
The YBA Signature stereo is the most compact form possible for the characteristics of the YBA Signature line. Nevertheless, the left and right channels are completely separated;they share only the power cable. It is equipped with two 330 VA transformers and twelve YBA transistors.
The YBA Signature double mono is built on two separate chassis. This allows it, among other things, to be equipped with four 330 VA transformers and twenty-four YBA transistors.
As for the YBA Signature 4 chassis (photo above), it has the famous YBA line filter (one per channel) and, in addition, is equipped with eight 330 VA transformers. It also benefits from a power-on sequencer in order to prevent any overload of the power line.