Circuitry for increasing the maximum output current magnitude of a diamond buffer (Q57,58,74,75) having increased maximum output current provides a bias current of a first magnitude (I) into an emitter of a PNP first input transistor (Q57) and sinks a bias current of the first magnitude out of an emitter of an NPN second input transistor (Q55). The decrease is sensed in a collector current of the first input transistor caused by a demand for increased base current by a NPN first output transistor (Q74) of the diamond buffer. A collector current (Ic(65)) in an NPN another transistor (Q65) is increased in response to the decrease in the collector current of the first input transistor. The increased collector current in the first transistor is mirrored into a base of the first output transistor to boost its base current and maintain operation of the first input transistor when the amount of base current demanded by the first output transistor exceeds the first magnitude.
