audio aero pre is only OK. my audio aero has the pre option too.
id suggest that before you upgrade your merlins, you get good and familiar with what you have/get and then make the move, or not.
i'd also suggest you consider a nice tubed preamp and tube amp to really help with the smiles! for example, perhaps you have ever noticed that ALLmost all electric guitar players uses tubed amps? ever wonder why...there is a reason. ok, i'll give you a hint..the sound! woops, that's the answer.
i've had loads of like with atam mp-3, and even more with mp-1. having the option to tube roll in your pre will also allow you to further fine tune your system to your satisfaction.
good luck
id suggest that before you upgrade your merlins, you get good and familiar with what you have/get and then make the move, or not.
i'd also suggest you consider a nice tubed preamp and tube amp to really help with the smiles! for example, perhaps you have ever noticed that ALLmost all electric guitar players uses tubed amps? ever wonder why...there is a reason. ok, i'll give you a hint..the sound! woops, that's the answer.
i've had loads of like with atam mp-3, and even more with mp-1. having the option to tube roll in your pre will also allow you to further fine tune your system to your satisfaction.
good luck