Are you thinking the 906 is driving 696 sq in MMG's fine so I'll use another 2 channels of amplification to drive the extra 539 sq in's of the 1.6's?
Personally I'd keep the MMG's, they're working fine correct, and save up some money to upgrade the amp first then the preamp. My reasoning is the MMG's are very good in their own right and can handle upgrades of the amp/preamp in your system before you "upgrade" to the 1.6's.
I would upgrade to a better quality amp first and use the preamp section of the 906. When you save enough again you can upgrade to a higher quality preamp at which time you will experience how good the MMG's actually are then decided if the 1.6's are necessary!!
I say this because I had a Onkyo 905 in a HT system with 1.6's driven by an external 250 watt @ 8ohm amp it worked for HT but the quality of sound for 2 channel wasn't very good. Bottom line the preamp section of the Onkyo's are the weak link for 2 channel.
Personally I'd keep the MMG's, they're working fine correct, and save up some money to upgrade the amp first then the preamp. My reasoning is the MMG's are very good in their own right and can handle upgrades of the amp/preamp in your system before you "upgrade" to the 1.6's.
I would upgrade to a better quality amp first and use the preamp section of the 906. When you save enough again you can upgrade to a higher quality preamp at which time you will experience how good the MMG's actually are then decided if the 1.6's are necessary!!
I say this because I had a Onkyo 905 in a HT system with 1.6's driven by an external 250 watt @ 8ohm amp it worked for HT but the quality of sound for 2 channel wasn't very good. Bottom line the preamp section of the Onkyo's are the weak link for 2 channel.