This is a class A 10w amp (the top transistor is doing the work while the bottom is an active current sink), the low end frequency response was improved by increasing the output decoupling cap from 1000uF to 4700uF (thanks TheBugger)
Specs: 20 - 200000Hz (-1dB)
12W peak output with CD level Input
Achieves about 5x gain over input
Single 25v Rail, low component count
Update: Replaced output cap from 4700 to 2200uF because output was not stabilising quickly enough, the new value seemed to be a good compromise.
