I bought this amplifier by the end of last year and I can say this Parasound HCA-1206 is the best sounding solid-state amplifier I've ever heard. Previously, I've owned and heard many amplifiers in my own audio system. Not on others system to be clear. So, I know the difference in the sound quality. This amplifier is a keep. Although it is very heavy, about 40 kilos, but the weight is equal with its built-quality. The designer of this amplifier is one of the most famous amplifier designs: John Curl. Probably you may know that this guy also designs the amplifier for Mark Levinson. In this post, I will do some improvement with this amplifier. Let's check it out.