"... to hear SQ difference between two high end pre-amps. The differences are likely to be subtle."
Only if you don't know what you're doing. If you put together a system where the differences between well made, high end preamps are subtle, you really, really messed up. Its time to rethink your approach to audio.
Only if you don't know what you're doing. If you put together a system where the differences between well made, high end preamps are subtle, you really, really messed up. Its time to rethink your approach to audio.