The IC type from the headline have two disadvantages for me:
1) The quality standart of the internal OP-Amp is unknown - not very high however
2) the variable resistor for the volume control is located in the NFB. This means, that the THD character is dependend of the level position resp. of the individual adjusted gain factor (particularly by freqencies above 10 KHz).
Therefore for me the question rises up, whether there are other versions, both at whole passive for the analoge signal pad so as with additional pins for use of various external operational amplifiers like AD797, LME49710 etc.
Thanks for advices.
1) The quality standart of the internal OP-Amp is unknown - not very high however
2) the variable resistor for the volume control is located in the NFB. This means, that the THD character is dependend of the level position resp. of the individual adjusted gain factor (particularly by freqencies above 10 KHz).
Therefore for me the question rises up, whether there are other versions, both at whole passive for the analoge signal pad so as with additional pins for use of various external operational amplifiers like AD797, LME49710 etc.
Thanks for advices.
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