13-06-2021, 07:49 AM
Hi.
The issue of leakage on the UL41 is only relevant on early ones. By the late 50s the problem had been addressed. The UL41 has an easy life in the DAC90A and also you can fit either a 10P13 or UL44 with no component changes, the 10P13 gives slightly lower output but its hard to actually hear the difference.
It's also easy to rebase the valve to B9A and fit a UL84.
The issue of leakage on the UL41 is only relevant on early ones. By the late 50s the problem had been addressed. The UL41 has an easy life in the DAC90A and also you can fit either a 10P13 or UL44 with no component changes, the 10P13 gives slightly lower output but its hard to actually hear the difference.
It's also easy to rebase the valve to B9A and fit a UL84.
