For those with a BRZ doing the upgrade, I was tweaking the EQ as the upgrade to the DSP still had a little too much in the mid range that brought back some fatigue to listening certain music.
I went through an old thread and amazingly the EQ setup for the stock BRZ setup back then does amazing things to the sound balance after my OEM Audio Reference upgrade.
http://www.ft86club.com/forums/showt...response+curve
I tweaked a little less punchy bass but the mid range imbalance has been smoothed out alot at high volume and low across multiple genres of music I tested from House to Disco to jazz and pop/rock.