J.D. Copernic writes: "The 300b a new introduction in the Copernic Audio portfolio, this power amp unit is a custom-made model for the most demanding customers, with a range of first-rate components making this stage one of the best." 

"I always say that you cannot generalize, there are astronomical differences between models with the same valves, speaking in a generic way about the 300b is like putting all red wines or all whiskeys in the same bag. 

As a driver tube, this stage uses as a 300b the mythical D3a coupled by 1: 1 interstage with Nanocrystalline core, custom-made for this power amp, with more than 40 layers of copper between both coils. 

The output transformers are made of paper-in-oil with 24 layers and four secondary sections, with a power of 14w before clipping. The entire PSU power system has MKP capacitors, it is a ZERO electrolytic proposal like the  Copernic  2a3 preamp, to which two powerful chokes of 20H and 45H of inductance are added.  

About the chassis... A very extensive CNC machining work was executed, the number of hours used in the design and calculation makes the whole set significantly more expensive, but the result has been spectacular, with an ultra matt natural aluminum finish."