In Reply to: Re: Dear Mr. Welborne... posted by dave on January 23, 2001 at 09:47:22:
You are kind of comparing apples and oranges. The voltage and current drivers in a SET amp have a great impact on the sound. The Mu stage driver in the Laural's and Apollo's will drive the output tubes differently (better) than your usual driver stages. I totally agree that different amps can sound much different and that different amps with the similar wpc ratings can have different perceived loudness.What I am talking about is changing only the OPT in an otherwise unchanged design. Also, don't think you are going to create an Apollo by simply upping the B+ and bias of a Laural. If this was possible, Ron could have brought the Apollo to market for the same price as the Laural. (simply plug in a bridge rectifier in place of the 5AR4, change the cathode bias resistor and change the driver stage B+ dropping resistor. This would actually be cheaper than the Laural.)
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