I just traded for a Gretsch 6162 dual twin w/6973 power tubes and original jensen speakers. It is not making much power...low volume and stays clean even when dimed with humbuckers in front of it. The clean tone does sound quite nice as it is but I can't imagine this is all she will do...never heard any 17 watt amp make this little volume. Can anyone describe the volume, overdrive and tonal characteristics of these amps when healthy and up to specs? Also, read some of the cap values are very difficult to find. Any recommended sources for these (20/10/10? I think I recall reading)? Thanks!