I have recently purchased a Cayin CS55a tube amp, whilst a very cheap amp ( and I paid 1/2 price) its performance I find astounding. I have tube rolled replacing the KT 88's with EL34's and this in may system improves markedly on my Naim Uniti and my Vincent pre / power amp hybrid. It is in my small music room but proves more than enough bass even with 20 watts in ultra linear mode. Speakers are Audio Physic Sitara 25's at 89dB and 4 ohms not exactly easy to drive.
