You start with the slow phaser. You kick it on and a super lush, super cheesy but very lovable slow phaser kicks in. Great for rhythm stuff in many styles. I found myself playing Waylon Jennings and Willie Nelson tunes with a big grin.
Then you kick on the medium speed and the unit slowly ramps up to its higher speed much akin to how a Leslie ramps up. You end up with a nice intermediate sound that is great for funk or sharper rhythm stuff ala The Talking Heads or The Hollies (Long Cool Woman In A Black Dress!). Again super cheesy but very fun and usable.
The high speed is a whole nother world. It nails that Leslie/Univibe sound almost too well and I found myself picking away at whatever Clapton/Winwood tunes I could remember (and of course SRV's Cold Shot).
All in all I am in love with the phaser in this amp. I would own one of these heavy as shit units just for *that* sound, at least long enough for me to reverse engineer the good bit!
Did I mention that these amps are lookers? If you are into ovens that is..
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