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Old August 17th, 2013, 01:53 AM   #1 (permalink)
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VVR - whole amp vs power tube scaling?

I'm readying all my parts to build a 2061X 20W Marshall Lead and Bass. It's the loudest 20W amp i've ever heard so i'm going to install the VVR kit I have in my parts bin.

To anyone with a decent working knowledge of VVR - what do you think sounds best - scaling the whole amp or just the power section?

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Old August 17th, 2013, 06:25 AM   #2 (permalink)
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I don't really like VVR, changes too much the feel of the amp imo, anyway best is to scale only the power amp, lowering the preamp voltage leads to a softer darker more bluesy sound.
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Old August 17th, 2013, 09:26 AM   #3 (permalink)
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I have read the VVR works better if you just scale the PI and back and put a volume control before the PI.
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Old August 17th, 2013, 10:50 AM   #4 (permalink)
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I did VVR in a little single-ended amp. Tried both scaling the entire amp and just the power tube. I didn't like the preamp scaled. Just as kleck said, too soft and dark for me. Having it on the power amp section worked really nicely, though. It opened up a lot of different textures depending on preamp, master and voltage setting.
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