Well, i have just spent a few hours listening to another of the above 6A3amps just completed. Admittedly it is still running in, but yes the amount of bass for just 5wrms is pretty amazing, although it does not have the damping factor of the SEOTL, which has totally spoiled me over the couple of years or so that it has been in use. Compared with the SEOTL, the 65khz top end sounds dull against the SEOTL's 100khz. You wouldn't think you'd notice. However, the SEOTL has died rather over the period, so now i have the opportunity of checking it out on the bench and making necessary adjustments. Because of the weird circuit and partly direct coupling, the biasing is somewhat bizarre and i could be thrashing one half of a 6080 but not the other, sort of thing. Soon i will find out, and will update shortly. Jack.