Tube DIY Asylum

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RE: still not buying it

Posted by Ralph on August 2, 2007 at 14:31:26:
Maybe you should try building up the two and see for yourself. The RCA driver has a certain amount of gain and you can set up a differential driver to have exactly the same amount of gain- not half. The RCA driver has a propagation delay between the non-inverted and inverted phases; the differential amplifier has none.

FWIW I've been doing differential amplifiers for years- follow the links associated with my moniker and you will see.

Differential drivers have the added benefit of having greater power supply noise immunity FWIW. I really can't think of a reason to use the RCA driver.