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Showing 1 of 1068 conversations about:
DarkVoice 336SE OTL Headphone Amp
Audiophile
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tim_herremans
45
Jul 13, 2020
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Highly recommend de-soldering the ground from the RCA outputs. Huge difference. It's no longer so dark and overall sounds much better. also here’s the LED mod.
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I replaced the bottom eight screws- (M3-0.5 x 8mm), be sure to check for clearance. There are two wires you may have to wiggle out of place of the screw. A 3mm screw length is closer to stock ones.
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Update: Swapped out the bright orange LEDs on the 6sn7 socket to something more ideal. A dim red led (630-HLMP-6000). Huge difference, I should not have used the first set.
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Here is the pre-amp output removal by desoldering the black ground wire located in the top right of the pcb. Next to the R.
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Update: Stock feet are easily removable. 3mm screw. Replaced with adhesive silicone hemispheres.
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update: new solid aluminum volume knob. Stock is plastic with a metal sleeve. New potentiometer soon..
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Edit: Current state of the amp. No other internal mods have been done. The red LEDs have stayed and it’s still sounding excellent. Tubes: Tung-sol 5998 (NOS yr. 1957) National Union 7193 x2 (NOS yr. 1943)
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(Edited)
Jul 13, 2020
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bwuhoo
1
Jul 22, 2020
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tim_herremanshey tim, would you happen to have any pics of how you de-soldered/disconnected the ground from the line out?
Jul 22, 2020
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tim_herremans
45
Aug 2, 2020
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bwuhooHey, please read my edited post for the photo.
Aug 2, 2020
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bwuhoo
1
Aug 4, 2020
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tim_herremansYou're the best! Thanks of the pic. I am trying to find the courage to do it. I'll let you know my results if I do.
Aug 4, 2020
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MeganK
1
Aug 4, 2020
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tim_herremansMy amp had no wire there to desolder?
Aug 4, 2020
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tim_herremans
45
Aug 5, 2020
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MeganKYou can desolder the two preamp our wires. Or even snip them if you want.
Aug 5, 2020
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achyls
0
Oct 16, 2020
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tim_herremansHey mate, it looks cool! can you share which potentiometer knob you ordered? thanks!
Oct 16, 2020
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tim_herremans
45
Oct 16, 2020
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achyls
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Knurled for stock knob, solid for after market aluminum knob.
Oct 16, 2020
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