Originally Posted by s1rrah
I second that.
To be honest ... I have no clue as to what the intention of that posted bit was in regards to sonics ... but I know he wouldn't run his DAC half taken apart if it didn't result in *some* sonic improvements.
I too am tossing around the idea of a significant CAP upgrade on my havana ... but I'm just not sure which, if any, of the MHDT produced CAPS should be replaced.
Was thinking Mundorff, Blackgate or Sonicap ...
Just not enough info for mod n00bs like myself to make me take the plunge, yet.
Well, it is a complicated enough situation, as I was also working on my digital source, so I may not be able to pin-point the gain in sonics is 100% due to the mods in the dac.
Anyway, this is a short summary of the dac mod:
Stage 1. Output coupling caps changed to Duelund copper foil
The Havana output coupling caps are upgraded with the Duelund vst copper foil. As the Havana already has quality film and foil caps, the replacement with Duelund caps is not night and day differences. The Duelund does sound more controlled and there is an increase of the darkness that brings out more 3D spatial quality.
I guess the VH teflon caps could even be better, but I am not sure if I want to spend 3 times more than the Duelund. Furthermore, mine is a lower voltage DC-designed caps and is cheaper than those reviewed in the web.
After about two weeks, I am still not too satisfied, so I start the dual batteries mod.
Stage 2: Two batteries with small caps into the +&- AC9V of Havana, only slight improvement
Stage 3: Two batteries with bigger caps & also power supply changes to the digital input source that feeds the havana, improvement in both dynamics and resolutions that I never thought possible in my system is here, finally.
Before the batteries mod, my Bendix does sounds too smooth and seems lack a bit of the frequency extremes and dynamics, while the tungsol is preferred as it has a bit more high frequency energy. After the mod, the Bendix is very well balanced.