Jump to content


Returning Member
  • Content Count

  • Joined

  • Last visited

Community Reputation

11 Good

About samsie

  • Rank
    Limited Edition Bronze Participant


  • Occupation
  • Hobbies
    fountain pen collection, fishkeeping
  • Headphones
    Stax SR009 Grado RS1 Magnum Grado SR-325i Hifiman HE-6 Stax SR404 V-moda 100 Sennheiser HD800
  • Headphone Amps
    Darkvoice THA336 (mod) Elekit TU882 (mod) Objective 2 Sense G3 (mod) Sense G3-T7 (mod) Sense G5 Budgie SE OPPO HA-1 KGST Home made clone amp: "Mapletree Super II" "Grado RA1" "RSA XP7"

Recent Profile Visitors

1,716 profile views
  1. Please update my order. 4x GRHVxxx (assembled) 6x GRLV78xx 6x GRLV79xx 2x main board 1x mini t2 board Thanks Sam
  2. Dear Kevin, I find the heater power supply portion to be rather handy. Would you please cut the HV supply portion away so that I can use the heater power supply portion for mini T2 project? Thanks Sam
  3. The amp was getting really hot at 70°C. It was running at 22.5 mA. I have to reduce the bias current. Should I change the 2k ohm resistor or the 500k one? I am a bit confused.
  4. CFA2 (CFP) - current feedback amp I still cannot figure out how to connect them into balanced version of CFA2 (CFP) - current feedback amp as they are single end type of pcb. I know I need four boards, but how do I connect the negative input rail ? Your help is much appreciated.
  5. And how do you do the printing? Sam
  6. This was completed an hour ago. It worked though I did not do any measurement. I tried it with my only planar Hifiman HE6. The volume was a dummy. I used a preamp. I could not afford a decent volume control for individual headamps.
  7. thanks all, I ordered. I know I'll have to handle SMD sooner or later. In the mean time, I am searching on the web regarding how to mount the TPS7A3301 and TPS7A4001 directly on the board. Maybe I could finish it before the modules arrive? Sam
  8. Please help me with the TPS7A3301 modules, I could only find this https://www.ebay.com/itm/TPS7A3301-Ultralow-noise-LDO-regulator-3V-18V-1V-step-1A-LM337-79x-replace/253593923500 It appears that it could only provide -18v, not the -20. Am I missing something? After spending half a day staring at the pcb without any progress. I gave up on soldering the chips to the board by myself.
  9. agree, yes, four sets power supplies, many projects to be completed. I changed the quantity to 2 sets
  10. sorry, a bit too much for me. Maybe I would join in when there is a group buy for a set of transformers sam
  • Create New...