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Post 11 of Which parts would improve quality?
Well, there’s always the LC Audio Zapfilter http: May 29, at 6: Hope will raise sound quality. I would definitely recommend getting a schematic if possible before just shotgunning parts out. The PCB set is 18 Euro, and he can supply parts as well. Are there some transistors replacement databases on the web?
Need help for transistors upgrade | Headphone Reviews and Discussion –
Supposed to be really good and cheap Also, the Pass D1 stage is another one to look at. I agree with cetoole. I will post some pictures of the board.
I would like to try better transistors. What I did was to change out the opamp and replaced it with an OPA Post 9 of Thanks for the tips. I class-a biased it with two jfets.
Colin cetoole looked the design over and saw some things he didn’t like. May 30, at 6: Post 15 of May 11, at 9: I would guess at least some of them are for output muting. What DAC is in here?
Datasheet Page , pdf datasheet & application note
Share This Page Tweet. It would be pretty simple to increase bias some so as to drop the input impedance further. There are improved variations on this, as it was really just posted to get people thinking, but this is probably the simplest it will get while still offering good performance. Post 14 of Sometimes I can hear noise when the player is searching for a track, but the increase in sound quality is worth it. The original parts are: Post 3 of May 28, at 6: May 29, at 7: The ones closest to the opamps look like they are the muting transistors.
No, create an account now. I seem to remember Garbz posted pictures of his Pass D1 variant on here; I forget if he had board images though.