With the Spec 1 you DO need a power amp to run the headphones.
Any decent power amp should have no problem doing this. You don't need to buy a matching Spec power amp. It would be mighty impressive looking though:)
The rig to pre-amp is correct. Be certain to hook the power amp output into the spec1 carefully, unless the power amp has its own headphone jack. There are connections on the back of the spec 1 to select speakers, so the power amp has to be run back into the pre-amp to do so, and also to power the headphones so be careful to make the proper connections!!! The Crown DC-60 amp for one, does have it's own headphone output so that could be a decent start...
Any decent power amp should have no problem doing this. You don't need to buy a matching Spec power amp. It would be mighty impressive looking though:)
The rig to pre-amp is correct. Be certain to hook the power amp output into the spec1 carefully, unless the power amp has its own headphone jack. There are connections on the back of the spec 1 to select speakers, so the power amp has to be run back into the pre-amp to do so, and also to power the headphones so be careful to make the proper connections!!! The Crown DC-60 amp for one, does have it's own headphone output so that could be a decent start...