Tiff Needle:
Congratulations on the Model 6's with batteries - they are superb amps. Jonathan Tinn, who is the U.S. distributor for darTZeel and a former Von Schweikert dealer, used to suggest Model 6's for Von Schweikerts if his customers couldn't afford darTZeel. The short answer is "any really good speaker" because the Model 6's are really good amps (like in "better sounding than most current production top-shelf solid-state amps").
As for general observations, I would have the batteries replaced in the BPS units so you don't have to worry about whether they are in good shape. I'll send you an e-mail with the battery information sent to me by Kelly Ballard of Rowland. Rowland buys them from Allied Electric in Ft. Worth and any decent tech can install them for you. The batteries are good for four to six years, depending upon usage. My experience with both Model 6's, which I owned for three years, and the Coherence II preamp, which I've owned for nine years, is that the Panasonic (Matsushita) batteries are the best quality.
In really good systems, the advantage of the batteries is that, despite reducing wattage somewhat, they actually give greater headroom because the noise floor remains much lower.
I strongly suggest that you leave the amp units powered up 24/7 instead of putting them into Standby. Standby cuts power to the output stage and exposes the output transistors to harmful thermal cycles. The amps also sound a lot better when left on 24/7.
Finally, my experience is that they sound really good when run without batteries, they are superb when run with batteries, and they sound best when run with batteries and fully differential balanced (you have a Synergy IIi, so balanced is possible for you).
I ran my Model 6's with Revel Salons (original version) - my Salon dealer thought highly enough of the Model 6's that he suggested them for the Salons, even though he wasn't a Rowland dealer. They are superb amps, especially with the battery power supplies - congratulations again.
Congratulations on the Model 6's with batteries - they are superb amps. Jonathan Tinn, who is the U.S. distributor for darTZeel and a former Von Schweikert dealer, used to suggest Model 6's for Von Schweikerts if his customers couldn't afford darTZeel. The short answer is "any really good speaker" because the Model 6's are really good amps (like in "better sounding than most current production top-shelf solid-state amps").
As for general observations, I would have the batteries replaced in the BPS units so you don't have to worry about whether they are in good shape. I'll send you an e-mail with the battery information sent to me by Kelly Ballard of Rowland. Rowland buys them from Allied Electric in Ft. Worth and any decent tech can install them for you. The batteries are good for four to six years, depending upon usage. My experience with both Model 6's, which I owned for three years, and the Coherence II preamp, which I've owned for nine years, is that the Panasonic (Matsushita) batteries are the best quality.
In really good systems, the advantage of the batteries is that, despite reducing wattage somewhat, they actually give greater headroom because the noise floor remains much lower.
I strongly suggest that you leave the amp units powered up 24/7 instead of putting them into Standby. Standby cuts power to the output stage and exposes the output transistors to harmful thermal cycles. The amps also sound a lot better when left on 24/7.
Finally, my experience is that they sound really good when run without batteries, they are superb when run with batteries, and they sound best when run with batteries and fully differential balanced (you have a Synergy IIi, so balanced is possible for you).
I ran my Model 6's with Revel Salons (original version) - my Salon dealer thought highly enough of the Model 6's that he suggested them for the Salons, even though he wasn't a Rowland dealer. They are superb amps, especially with the battery power supplies - congratulations again.