^^^ Yes! step downs work wonders in preamps to lower the voltage, impedance and noise all in one shot. Who needs 25V p-p to drive their power amps? Most amps clip well before 2V p-p input.
Here's the power transformer to one of my amps. It's custom wound by an industrial transformer winder here in Seattle. It's chunky! Rated for 50 / 60hz service, with a temp rise rating of 115 degrees, 410VA. Noise level (acoustic buzz) is rated at 40dB max! These guys know what they're doing.
![](http://www.audiocircle.com/image.php?id=107993)
![](http://www.audiocircle.com/image.php?id=107994)