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Its not so much about the voltage, when u bias amp, you need to bias it so it draws around 100mA per transistor. Generally i bias slightly higher to about 125ma +/-. Could be closer to around .65-.68V. Also bias circuit shouldbe regulated so that amp can maintain same voltage while at idle or during talk time. Many of the cheaper circuits like the simple diode are class B and voltage drops down while talking so that amp is very close to if not class C.

[QUOTE="Crusher, post: 361883, member: 3746"] Its not so much about the voltage, when u bias amp, you need to bias it so it draws around 100mA per transistor. Generally i bias slightly higher to about 125ma +/-. Could be closer to around .65-.68V. Also bias circuit shouldbe regulated so that amp can maintain same voltage while at idle or during talk time. Many of the cheaper circuits like the simple diode are class B and voltage drops down while talking so that amp is very close to if not class C. [/QUOTE]

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