I think in the End of the Carver Days , he came out with the Lightstar , it was a pricy amp , but kick *** and Clear . I heard from the Carver Forums that some of that Tech went into the Sunfire amps , since he left Carver and created Sunfire . I like in the new Sunfire Amps , you can option the Tube like sound Chip or go with out it , or By-amp the Tweets with the Tube like sound and the low end with regular power ( more Bass ) .