Not sure the science of your question was not answered already...?
If *balanced* is 'pseudo balanced' i.e. achieved by opamp implementation as compared to 'fully balanced' implemented by two seperate strands of amplification within one source unit, the notion is that fully balanced is superior technically to a 'quick fix' opamp implementation.
So, if the equipment is not a fully balanced design (looking at the design diagram was already mentiond) THAN it will by deduction appear to keep the opamp out of the source line AND USE THE SE (single ended) connection.
Drilling further into the science of whether the addition of on opamp is beneficial to sound quality can be answered by listening, what has been mentioned.
BTW, that opamp chops a full audio sign-wave into a negative and a positive, so it's up to the beholder to decide whether this is of no import to the signal further passed down the line.
Again, if the final stage the poweramp has a pseudo balanced input option, the use of this also involves an opamp to first combine the two halve waves, ahead of the actual poweramplification stage(s).
Common sense, at least, suggests that this again will not lead to any signal improvement but rather to a degree of its deterioration.
Not sure this fully will answer the question regards any scientific proof etc..
To do THAT, a signal analyser would need to be called for plus engineering experience in explaining the results generated.
M.
If *balanced* is 'pseudo balanced' i.e. achieved by opamp implementation as compared to 'fully balanced' implemented by two seperate strands of amplification within one source unit, the notion is that fully balanced is superior technically to a 'quick fix' opamp implementation.
So, if the equipment is not a fully balanced design (looking at the design diagram was already mentiond) THAN it will by deduction appear to keep the opamp out of the source line AND USE THE SE (single ended) connection.
Drilling further into the science of whether the addition of on opamp is beneficial to sound quality can be answered by listening, what has been mentioned.
BTW, that opamp chops a full audio sign-wave into a negative and a positive, so it's up to the beholder to decide whether this is of no import to the signal further passed down the line.
Again, if the final stage the poweramp has a pseudo balanced input option, the use of this also involves an opamp to first combine the two halve waves, ahead of the actual poweramplification stage(s).
Common sense, at least, suggests that this again will not lead to any signal improvement but rather to a degree of its deterioration.
Not sure this fully will answer the question regards any scientific proof etc..
To do THAT, a signal analyser would need to be called for plus engineering experience in explaining the results generated.
M.