I'm probably not going to implement a bootstrap. Does that mean there's anything worth doing with R10?
I'm sorry for my ignorance, but I don't exactly understand how a long-tailed pair input stage works exactly. If I have balanced DAC/pre output, can I feed that into the LTP after breaking the negative feedback circuit (removing C4, C5 and R5)?
I will measure the output transistors if I decide to change them, for the time being I do not know how well they are matched. Does that mean I have anything to do with the ratio of R3 to R11? I thought that the biasing network already takes care of that.
I don't understand what is folded cascode, nor what it means that it's resistive loaded, but I'm pretty sure I will figure out at least the folded cascode part. Is it just when npn drives pnp perhaps (and vice reversa)?
I ordered some 5W metal film resistors to replace the keramic load resistors.
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Q3 replaced.
Again less dull, better high frequency performance. Relatively big improvement. ABing around 10s between transistors. Do what I did in pic and listen for yourself.
Also it may not sound like important step, but do move the speaker ground and the PSU ground to the amp section of the board instead of the protection circuit area. There is significant enough difference fo warrant it in my opinion.
Again less dull, better high frequency performance. Relatively big improvement. ABing around 10s between transistors. Do what I did in pic and listen for yourself.
Also it may not sound like important step, but do move the speaker ground and the PSU ground to the amp section of the board instead of the protection circuit area. There is significant enough difference fo warrant it in my opinion.
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Pardon the ignorant question, but would this work to connect my bal DAC?
The volume pot is already deleted. (Red)
The volume pot is already deleted. (Red)
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