Running Benchmark AHB2 in bridged mode and 4 Ohm Speaker

I had mentioned in my review that the AHB2 is not able to drive the Kingsound King III electrostatic to an unlimited level of listening. However, there is no degradation of sound as the amp is pushed to its limit, and there is no degradation associated with mono use.

I had mentioned in my review that the AHB2 is not able to drive the Kingsound King III electrostatic to an unlimited level of listening. However, there is no degradation of sound as the amp is pushed to its limit, and there is no degradation associated with mono use.

How did one stereo amp sound to a level it was comfortable at, and then the bridged at the same level? To gauge which sounded better. Not which could go louder!

Cheers George

@kijanki 

Ramtubes, AHB2 has load/line regulated SMPS, but as you mentioned, there are losses everywhere. Exact doubling of power for half of the load means perfect regulation - an ideal voltage source, that is only possible with very deep negative feedback

Lets just take this first part. Feedback is not involved in doubling of power, deep or not. The losses I am speaking of are mostly in emitter resistors and turn on resistances of the output devices. Once an amp clips feedback cannot make up for these losses. 

I had mentioned in my review that the AHB2 is not able to drive the Kingsound King III electrostatic to an unlimited level of listening. However, there is no degradation of sound as the amp is pushed to its limit, and there is no degradation associated with mono use.

How did one stereo amp sound to a level it was comfortable at, and then the bridged at the same level? To gauge which sounded better. Not which could go louder!

George is correct and one amp might sound better. Im curious what the owner of these speakers considers unlimited level?  Lets watch the words.

BTW, ESLs exhibit clipping very similar to amplifier clipping. This occurrs when the air gap saturates, and I assure you it does. One can often smell the ozone close up to the speaker.... im not kidding.

Once an amp clips feedback cannot make up for these losses.

I agree, but amp that doubles power exactly has to have adequate power supply AND deep negative feedback.  Exact doubling implies perfect regulation (ideal voltage source), that is not possible without deep feedback.