Running monoblocks in parallel to increase watts??

The inversion technique works with transistor amps (and is the way that car stereos get 15 w/channel while running only 12 volts).

That technique is: the load goes between the two '+' outputs. This assumes that the '-' outputs are tied to ground. One amp then uses an inverted signal while the other uses a non-inverted signal.

For tube amps *in general* the + outputs are tied together and the - outputs tie together and the load is between the resulting + and -. The inputs are 'Y'd together.

Power does not always double- with transistor amps and most tube amps it does but there are exceptions- for example with our S-30 the output power goes from 30 watts/ch to 90.

In all cases a loss of delicacy will be observed. This is due to minor variance between the channels. In tube amps this can be reduced by matching tubes in the left and right channels so as to reduce the variance. There is nothing to be done in the case of transistor amps.

You *do* have to be careful! One wrong step and you can quickly toast something!

Bridging is definately balanced. That is why you see bridge-able transistor amps with balanced inputs that only run in balanced mode. But there is no association with greater gain, although it is possible to achieve greater gain with less noise when running balanced.