+1 on all comments on EPSi!

Note you can bypass the EPSi by just turning of the fx loop. To be clearer, you can set a preset to use the EPSi (11 Rack cab off/FX loop on) and the next preset to use the 11 rack cab (11 Rack cab on/FX loop off).

I personally have found the Ownhammer classic/modern IR's to be amazing on both clean and dirty.

The real plus is there really is not much need to do heavy eq (or any!;)) i.e more like a real amp/effects chain, IMHO smile Trick is choosing the right amp/cab for the sound you are after.

For my money the 59 Tweed works awesomely for clean/slightly, dirty tones. trick is to control the volume (remember that control wink )at the guitar for the clean/dirty.
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I'm a practicing guitarist, one day I hope to get it right..