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1. Review of darkvoice 336se otl headphone amp install#
2. Review of darkvoice 336se otl headphone amp mod#

* low noise voltage regulation (likely to need a different power transformer due to the voltage drop) * move power switching to the back so the power is not routed up next to the preamp section (this could be a power relay operated by a simple transistor with the transistor controlled by a low power DC switch on the front instead). * Constant Current Source (CCS) to flatten the operating line. You can also do that for the entire supply - but again, it would need design work to ensure you understand if the power transformer could handle it. * more capacitance on the LPF if it reduces the cutoff point (very careful of inrush current which will damage the transformer). * change caps to a choke+caps (essentially changing from the bi-directional CR low pass filter)

* frequency response with your chosen headphones?īig filter caps in there as a low pass filter protecting the front end 6SN7 for noise - options here are

Review of darkvoice 336se otl headphone amp install#

Other than tube rolling - unless you know of any real juicy tubes to install - suggest whatever comes to mind for further improvement of stock unit.ĭarkvoice and Crack Mods | Super Best Audio Friendsĭarkvoice 336i & 336SE Tuberolling PartII | | Headphone Reviews and Discussion - įirst I'm going to ask the obvious existential question - what is better? colors have different doping materials and diff. Have there been comments on the brand or type of LED to use? I've heard that color can make a diff. This may have worsened the sound? Not sure!

Review of darkvoice 336se otl headphone amp mod#

Next, I did the LED mod (replacing the 1k R). I think that made a positive improvement. I did the Preamp Output ground (remove) mod. I have not made such comparisons, however.Ī few mods have been suggested for the 336se. It can roughly be compared to Bottlehead Crack, the latter being better built and pricier. FYI, the Darkvoice 336se is a popular tube headphone amp from China.