Difference between SET and push-pull using 300B

Basicaly, in a SE configuration you have one output device (tube, MOSFET, transistor, ...) which is usually working in A-class. That means that it is always open and transmits the whole "sinusoide" - actually the whole signal. It usually get very hot, and the losses to the heat are considerable. This design is probably the oldest one (with WE 300B).

Push-Pull design has two output devices at the output. Each device transmitts the half of the sinusoide. PP devices can work though in different classes. They are usually more efficient and provide more power at the output than SE. That is why they are preffered solution with more critical loudspeakers.

Typically SE is considered as superior design in respect of sound reproduction. It has though some limitations - the most important one is the power that it can provide and accordingly, the matching with appropriate speakers. PP can be also extremly successful in sound reproduction. It depends actually on implementation; output devices that are used; quality of transformers; etc. So there are seriously sounding PP designs as well as poor sounding SEs ...

I wouldn't worry though to much about all this. Listen to this amp (if possible with your speakers) and see whether you are happy with the sound. If yes ... then ... no problem which internal design has been implemented.

@La45

Theoretically it could be an issue and probably speaker cables with less capacitance should work better. But I had once on test at home SET 300B (Audiogon Silver Night) connected to my speakers with Kimber 8TC - which are known for relatively high capacitance - and it worked very well. No problems ...

I believe that the careful matching with the speakers is much more of an issue, when we are speaking about SET 300B, although (and that has to be said as well) they are capable of driving speakers that would never say that it is possible by just looking on speaker figures/numbers ...

Interconnect and speaker cables are endless story. And there are many different opinions about it. And then silver vs. copper ... if we start that subject this post could last for years.

Therefore I will only tell you what I did and what I am doing ... All internal wiring within the pre-amp with Mundorf silver wire (0,5 mm). All inteconnects Crystal Cable silver wire (with 1% of gold). I am planning also to go for Crystal Cable speaker wire. All connectors WBT silver (on the pre-amp)etc.

So you can see that I am a fun of silver. But you should take care about several issues with silver. First, it is expencive. Second, if it is of low quality it can sound harsh, ... rough, ... unpleasently unrealistic. I was bought on Crystal Cable sound, though.

Therefore try by yourself, listen carefully and see for yourself whether it is something that you like. And whether you can hear the difference in your system, with your speakers, in your room. There are also some excellent sounding copper wires as well, so there is definitely no lack of choice in this area ... Take some time and compare them ... and you will see ... There is no clear and definitive answer, I think ...