pinwa,
First, congratulations on the Moabs. How long you had em? Should sound real nice with that Willsenton. KT88 or EL34? How's it sound? Aside from the subs I mean.
Sounds like your problem is the line level from the DAC is high enough you're not able to attenuate it down to where you want it. If the Willsenton had RCA pre-outs that would be ideal. Doesn't look like it does. So your solution would be to do like I did with mine and create a pre-out by using what is called a Line Out Converter or LOC.
An LOC is nothing more than two resistors that serve to drop your amps speaker voltage down to line level. Here is the circuit https://www.epanorama.net/circuits/speaker_to_line.html
If you remember my Melody amp didn't have pre-out either. What I did was modify one of my extra unused RCA inputs by adding the two resistors to turn them into a pre-out. You can see a photo of the mod on my System page https://systems.audiogon.com/systems/8367 Its not much, very simple. Total cost for the 4 resistors was just under $2.
If you don't want to mod your amp (its easily reversible btw) then you can make your own LOC for $2, connect it to ordinary speaker wire, put an RCA on the end and plug it in. Or buy the cheap one from Parts Express. Same result either way. This should totally solve your problem.
First, congratulations on the Moabs. How long you had em? Should sound real nice with that Willsenton. KT88 or EL34? How's it sound? Aside from the subs I mean.
Sounds like your problem is the line level from the DAC is high enough you're not able to attenuate it down to where you want it. If the Willsenton had RCA pre-outs that would be ideal. Doesn't look like it does. So your solution would be to do like I did with mine and create a pre-out by using what is called a Line Out Converter or LOC.
An LOC is nothing more than two resistors that serve to drop your amps speaker voltage down to line level. Here is the circuit https://www.epanorama.net/circuits/speaker_to_line.html
If you remember my Melody amp didn't have pre-out either. What I did was modify one of my extra unused RCA inputs by adding the two resistors to turn them into a pre-out. You can see a photo of the mod on my System page https://systems.audiogon.com/systems/8367 Its not much, very simple. Total cost for the 4 resistors was just under $2.
If you don't want to mod your amp (its easily reversible btw) then you can make your own LOC for $2, connect it to ordinary speaker wire, put an RCA on the end and plug it in. Or buy the cheap one from Parts Express. Same result either way. This should totally solve your problem.