I emailed SMSL and this is what they said in response to what chip is being used. “The details that are not provided are the secrets of the factory, which we cannot know.”
I’m not sure what the big secret is!?
That's SMSL's usual meaningless secret policy.
Why keep the amp chip secret in SMSL when the Sabaj A20a 2022 exposes the amp chip? This is the reason why I don't trust SMSL more than other brands.
As you may know, SMSL, Sabaj and Loxjie are companies of the same SMSL group and have the same parent company. We share product design and parts used. The design of the amplifier part of A300 and A20a 2022 is the same. AO200, DA-9, A20a have the same relationship.
Although it is the same group company, Sabaj is very kind and answers questions politely. The correspondence between these two brands is exactly the opposite.
HiFi Express always gives you information on new products as soon as possible, but there are quite a lot of mistakes in the description by speculation.
question
Is your A300's BTL dual mono connection a master-slave method using the BTL-R output described by SMSL?