Krell FPB600 can it be bridge to mono

All the amps that I know that have been bridged, you gain big time in rms wattage, but loose out also big time on damping factor (bass control)

Cheers George

Do you really need that much power? How hard are youe speakers to drive.

Since the FPB-600 has balanced outputs, it cannot be bridged. From the manual:

The differential circuitry employed within the Full Power Balanced amplifiers requires special attention when connecting speakers. Be careful not to connect the negative speaker terminals together. Do not connect the negative speaker terminals to ground, or attempt to bridge the left and right channels together....

Regards,
-- Al

Al what's your explanation to how the Krell amps maintain class a all the time? How would it know a transient is coming to switch it to a higher mode? The guy from Gryphon says dagostino is full of it. Maybe he's jealous I don't know.

Jeff, Martin Colloms' review of the FPB-600 in Stereophile states as follows;

... Krell's "Sustained Plateau Biasing," a patented Krell technique that provides an effective equivalent to class-A biasing—without a long-term power dissipation penalty—by anticipating the size of any and every musical event.... It uses high-speed current-feedback circuitry to do this, then holds these required levels in a static condition for tens of seconds after the event is over. This minimizes any possible dynamic interaction of bias level with sound quality. The FPB 600's seven stages of bias represents the highest evolution yet of this technique.

The manual states that:

Sustained Plateau Bias is a KRELL patented process that enables your amplifier to play all music (up to full rated power) in Class A, yet greatly reduce the heat dissipation and energy consumption associated with conventional Class A designs. Sustained Plateau Bias is a true Class A circuit, as opposed to sliding or adaptive biasing schemes.

I suppose the last sentence quoted from the manual is debatable, and comes down to a matter of definitions and semantics, but in any event Mr. Colloms' comment seems to explain the relevant aspects of the design.

Best regards,
-- Al