This topic has been waited for long time.
But, the topic should be "Helios Type Pre vs. Apollo Pre"
because it is not test of Symphony AD and Apollo AD.
Anyway, AD1 is not good.
It sounds like $100 usb audio interface.
Originally Posted by Johnkenn
OK - I'm not saying this is a scientific test by any stretch of the imagination, but I recorded these two files using these chains...
Chain 1 - TLM67--Helios Type 69 500 pre--Symphony i/o AD
Chain 2 - TLM67--Apollo pre w/Helios plug at same EQ settings--Apollo AD
Can you tell which is the Symphony and which is the Apollo?