Could some recommend a bright sounding tube. Thanks
siemens cca (early - mid 60's) tube is vibrant, dynamic, punchy, very high levels of detail, great extension on both bottom and top end.
uniquely fantastic in that way
a "tour de force"
that could be classified as bright - i initially found it a little too aggressive with my hd800 with silver norne cable when i first got it
great with my lcd 2 and elear
can be a bit pricey however
brent jesse suggests not to get too caught up in silver v grey ( more expensive) shields (on the side)
mine are silver and i love 'em
edit: extra thoughts.....
another idea:
amperex military USA (usn cep) PQ shields 7308.
very neutral , perhaps a tad on the brighter side of neutral
good air and extension up high
nice mid-weight sound
nice spacious sound - good instrument separation
good clarity
nice defined bottom end
can pick them up for about $125 per pair if you look around
and =russian reflektor tubes i find are a little brighter but hit and miss around the place, but i like the balance better on the above amperex
@kolkoo might be able to help with more info there as i bought my air from him a while ago