Just wanted to articulate just how great the new Hayseed mod is. I got my new amp from Rob a couple of weeks ago and through a pair of Celestion Blues the thing sounds utterly fantastic. This is my third Hayseed; while I really liked the older versions of the amp (with and without the Alwood mod), they never quite nailed the sound of AC30s that I've owned/played. The 2011 mod, however, gets it right--that sponginess and mid-range that had maybe slightly eluded earlier Hayseed models is perfectly present here. There's still a wider frequency range available, but it's quite easy to dial in that prototypical Vox sound. And, as with all versions of the Hayseed, the master volume is wonderful.