TrollDragon
Headphoneus Supremus
I don't think the pins nubs are causing your hum, if you had the tubes partially seated and they still hummed. It is probably just the tubes themselves.
Looks like an interesting radio in the background. Blaupunkt?
Just as a precaution, some tubes are more sensitive to RF noise than others. Do you have a portable phone (or similar device) near your amp? If so, try to move it.
You can also try to (if feasible) to lift up the amp and move it slightly in different directions to see if the hum decreases.
I get hum when I play at very loud receiver levels. To avoid it I found that turning up the amp til around 3 o'clock (below clipping) and keeping my receiver on a low volume setting helps, but then I am usually listening through speakers.
You could just turn up the volume without music and listen at what level hum appears.
Perhaps playing with the gain switches/settings underneath the amp will help to get a good volume on headphones with a lower main volume control setting.
What is not enjoyable is that the wires on my spider web adapter break all the time when I move the adapter. They break at the soldering points at the Vector adapter.
What kind of wire is the thickest and most flexible that can be used with the Vector adapter (fitting through the little holes on the tabs) without soldering and just using the pressure of the tabs? Presently I use solid 22 gauge wire. Would stranded wire be better?
On my 6DJA adapter I use a breadboard with 30 gauge wirewrap solid wire without soldering. This seems to work better, but it seems to me that the wire is too thin to resist breakage (which already happened).
You could drive both channels with one 6DJ8 double triode with connections like this.
You just need to be handy and creative...
So if I decide to buy this 9 pin adapter for the Little Dot 1+, does it requier any soldering? And more so, how do I hook it up? Any tools that are needed?
So if I decide to buy this 9 pin adapter for the Little Dot 1+, does it requier any soldering? And more so, how do I hook it up? Any tools that are needed?
www.head-fi.org/t/686893/how-to-make-an-adapter-to-use-double-triode-tubes-with-little-dot-mk-ii
If you use only 6DJ8 you can forget switch. MK I+ is little trickier to do the box since it has decorations.