I've been looking into an AC-10 for a while, haven't been able to sit down and play one till recently. Went to pick one up today and found this guy instead. Actually a much better setup for me having less wattage and larger speaker than the AC-10. So it's the AC-4 HW1, hand wired with a 12" Greenback. Sounds as good as it looks. Can't stop playing it. Love this one.