So I've had an idea to build an electronic source selector for my amp. It took me a good while to even find some ICs, but now I know they at least exists (example: MAX397). Are there any modern (read: available for purchase in stores) ICs that are transparent (non-detrimentary to sound) enough to be used in a high fidelity amp? Or is there still no substitute to a mechanical switch as far as sound quality goes?
The MAX part doesn't even list THD in the datasheet...
The MAX part doesn't even list THD in the datasheet...
Hi Alex,
To give you some options, TI has ts3usba225 and ts5usba224 to offer. They state <0.05% THD. There are also ADG409 and MAX4911 (<0.05% THD).
There had been also discussions on this forum about using solid state relays and FETs as audio switches. The outcome of such discussions is never conclusive.
Regards,
Oleg
To give you some options, TI has ts3usba225 and ts5usba224 to offer. They state <0.05% THD. There are also ADG409 and MAX4911 (<0.05% THD).
There had been also discussions on this forum about using solid state relays and FETs as audio switches. The outcome of such discussions is never conclusive.
Regards,
Oleg
If you are not restricted by the available space then using relays or FETs as Mooly suggests would be my choice. Multiplexers that I've seen so far are not fully specified for audio applications. THD in the range of 0.05% is not so spectacular by nowadays standards, at least for solid state amps. You can try to get some promising multiplexers and measure their limits to make an informed decision.
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