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  1. how to switch my X1 preamp voltage 220V to 240V
  2. Bought a new wonderful X250 need some advice
  3. Help with irfp240
  4. An IV amp using the BS170R mosfet
  5. Nakamichi PA-5 and PA-7 Design Help Requested
  6. A40 parts
  7. DIY Speaker Suggestions to use with F5
  8. Which Pass DIY amp for lowest heat + power useage?
  9. My fist Pass Amp
  10. Semisouth Aleph J?
  11. Trouble with point to point F5
  12. Mezmerize DCB1 Building Thread
  13. New Line Stage
  14. what aleph disign is best to drive thiel cs3.7?
  15. F1 Help
  16. Bi-Polar Capacitor Help Needed
  17. Pre-Amplifier Aleph P 1.7 - why Attenuator Network after the Gain Stage?
  18. super symmetry seeking ideas
  19. Bass-ackward amp selection...
  20. What is "Pass Labs"
  21. Lame Amp Question - X'ing, Balanced Input, same as Bridging?
  22. Install a VU meter in Aleph 1.2
  23. Threshold 400A Looking for advice on restoration
  24. Looking for Threshold FET 10/e in silver
  25. UGS-DC offset
  26. New A40 built but -30V in R. channel
  27. Pass Labs amp combination for Thiel speakers, need Mr Pass' advice ! And everyone...
  28. Regulating first stage of a First Watt amplifier
  29. Pass Labs Loudspeakers
  30. aleph 5 or x
  31. Bride of Zen assembly question
  32. From whats what and which to Nirvana
  33. Found a pair of Aleph 1.0 and 1.2 shall I buy?
  34. F5 clone by Suds
  35. Which transistors?
  36. welding on the aleph 2 pcbs
  37. FET10e Channel Noise
  38. My Aleph 5 MK II Power Amplifier
  39. Mosfet testing
  40. Threshold Amplifier - Overview and Schematic Collection of all Models
  41. Threshold Fet One
  42. CheffDeGaar UGS preamp vs other or Borbely
  43. More FET noise measurements (for EUVL)
  44. Penultimate Zen transformer
  45. Best symmetrical PSU for B1 buffer
  46. I would like to see what we can do to help Zen Mod attend Burning Amp 2011
  47. help with Mini-Aleph/Aleph 30
  48. My Dream Aleph 2 Coming True
  49. Indcutor in CRC filter of PSU
  50. Switch & Volume control needed...
  51. Voltage output issue with B1
  52. PAPA'S KOAN ....... was Papa's Surprise
  53. Can this circuit using B1 buffers be simplified
  54. AM I Planning for disaster??
  55. Complete Novice Needs Help
  56. 2SJ109
  57. Is the F1 dead?
  58. seperate regulated front end for f4
  59. Display problem with Pass X1
  60. "CA-10", new Single Ended Power amp Device based on Aleph or ZEN ?
  61. capacitor
  62. Need service manual Sony
  63. A Zen I/V variant for the Saber DAC
  64. Capacitors Aging Pass X0
  65. ALEPH2
  66. Just wondering if Vic is....
  67. Pass amps for my tannoy monitor golds?
  68. 314159265358979323846264.... good rasons why?
  69. what to do whit this ??
  70. Threshold S/300
  71. Power output into 4 ohms
  72. Suggest me a preamp for my F4!
  73. Whats what and which
  74. BABY MONITOR OVER VOLTAGE APPLIED
  75. I fried someting on my F5...ugh
  76. citation 12 irf 130
  77. Pass mosfet citation 12 clone
  78. Voltage regulation on F5 power supply?
  79. speaker cone expand and contract when power on SA-3
  80. Transformer output for zen I/V
  81. FS: F5 Heatsinks
  82. MF Citation12 - MF gate resistor value
  83. Bosoz or another line stage in front of crossover with B1 buffers
  84. Threshold SA/1 diagram or Service Manual
  85. Recommend a project to fit in a Counterpoint SA100 chassis
  86. Heatsink at 2SJ109 in Aleph J
  87. Zen I/V Converter
  88. convert aleph 2 to pre for f4
  89. F5 with IRFP9140
  90. Matching IRFP244 MOS-FETs
  91. How does the current source work in a single-ended amp ?
  92. ZVP3310 - Good choice as input fet for Aleph 30
  93. Impasse with the F-5?
  94. Aleph amp questions
  95. Zen4 problem
  96. Forte Model 3 advice needed
  97. Fired up my Aleph 30 for the first time tonight...
  98. Aleph testing
  99. Balanced F5 question
  100. All JFET PLH Amplifier
  101. PS Caps
  102. Quick heatsink question
  103. Anyone Interested in Aleph PCBs?
  104. Transformer Screen & Signal Grounding Issues
  105. Pass F2
  106. Threshold S/500 power supply electrolytic replacement
  107. Thermistor Selection
  108. Return of Zen Input Scaling
  109. Aleph 4 Strickly DIY Project Build
  110. F5 where is the 4th harmonic
  111. New Nelson Build dubbed the Arch Nemesis
  112. jboz J310, 12volts, question about Drain R
  113. New guy here... My trusty 400a died...
  114. B5 caught in the wild :)
  115. F5 on batteries
  116. A question for Nelson Pass
  117. Aleph2 project
  118. Adcom gfa555 upgrade
  119. Want to build a Pass lab design....help desired
  120. AVX polypropylene film caps
  121. Aleph 3 input fets - How hot?
  122. F5 Preamp Simulation Shoot Out
  123. Would you guys mind giving me some input on my Aleph 5 PCB design?
  124. F5 Cascode and parallel output device questions
  125. Watt Meter
  126. Aleph J input capacitor (C1)
  127. passive noble 10k preamp loud buzz
  128. Building an Aleph 5...two quick questions
  129. Blown outputs (maybe?) in my Forte' 3 amp.
  130. Power supply connections
  131. Pearl Phono strange working
  132. amp selection?
  133. Troulbleshooting BOZ-J
  134. Other DIY Pass pre amps
  135. Amplifier Utilizing Two-Stage-Included Local Negative
  136. DC Couple X150.5?
  137. Thermistors and the F5
  138. Nakamichi TA-3A Tuner problem
  139. B 5 crossover
  140. Zenē MOSFET SRPP Power Amplifier
  141. Another GFA-555 With high dc offset
  142. Best Firstwatt amp for backloaded horns?
  143. F-5 Power Supply part Question
  144. A question about Push-pull class-a
  145. Modified Dual Differential F5
  146. Nelson Pass Aleph 5 - Heatsinks
  147. BoZ versus BosoZ
  148. f4 parts substitution
  149. Hoping somebody can help with De-Lite build?
  150. HELP: Trivial Balance Control for Balanced B1
  151. Fave Amp: Breadth
  152. pcb
  153. Alpeh 5 ???
  154. Aleph 4 - the right amp?
  155. X150.5 overheating (maybe)
  156. B-1 assembly, Pass boards and PEC pots
  157. Pass ONO or XONO PCB???
  158. F2 and F5 heat question
  159. Aleph 5 ,go..........
  160. Firstwatt F1J
  161. Anyone has experience on the Pass Labs X260.5 vs X350.5
  162. Value of Nakamichi PA-7 power amp?
  163. F5 - how to reduce bandwidth response
  164. SemiSouth Donuts
  165. My new members Show f 5 amp
  166. Which Pass Aleph diy board choose for no compromise headphone amplifier?
  167. input selector
  168. F2 Zen Type
  169. 400A VU meter
  170. B1 buffer w/out volume controls
  171. Biasing and cascoding questions
  172. Mosfet Citation 12 - Negative swing clip first
  173. First Watt kits? Projects?
  174. F4 sweet spot...
  175. pass-d : zen using a switched constant current source
  176. Pass X350 voltage & current
  177. F5
  178. Looking for a capacitor
  179. Mini-Aleph-J Question
  180. Hello, again, and and a request for help for a failing memory.
  181. s150 blown neg rail fuse
  182. F5 with 2SK2013/2SJ313
  183. Bi-amping question
  184. Something for us.
  185. New (to me) Threshold FET-10 HL (What to refurbish?)
  186. "Reference" amplifier
  187. Gold plated TO3 BjT's from the late 50's for Single Ended Pure Class-A Power Audio
  188. FET 10/HL to drive headphones?
  189. convert aleph 2 to aleph j
  190. convert a2 to aj
  191. Hum in Balanced Mode in Balanzed Bride Of Zen
  192. F3 vs J2 for a SET guy
  193. Aleph 3
  194. Playing with Nelson's puzzle.
  195. Bride of Zen setup and suggestions
  196. IRFP240 from eBay - real or fake?
  197. J-Low Horn Scaling
  198. woofer recommendations for F5 amplifier
  199. Pictures of your diy Pass amplifier
  200. Strange little circuit
  201. F4 power supply
  202. Balanced Zen Line Stage
  203. Aleph P with balanced shunt attenuator
  204. Zen Extension
  205. B1 buffer volume problem
  206. A little help needed with a Pass Aleph 30
  207. Aleph P1.7
  208. How different is the Nakamichi PA-7 from a Threshold Stasis?
  209. RIAA caps for Pearl and Pearl 2
  210. New First Watt Site
  211. Penultimate Zen V4 Input Fet's Question
  212. NP in Seattle May 20
  213. new SemiSouth SJDP120R085 "normally on" JFET
  214. Anyone Looking For A F5 Toroid?
  215. A blast from the past .. PAPA1
  216. Zen9-like Preamp for Power Followers
  217. New caps for my SL-10: which one?
  218. f5 power up issue
  219. grounding issue with F1
  220. IRFP9240 Fairchild where to buy it?
  221. Boiled Water Buffer
  222. sic NPN (SAND) upgrade for D1B1??
  223. Pass Labs B4 crossover questions
  224. 400A Overheat ??
  225. strange behaviuor of F5
  226. Case for a PASS amp
  227. Nakamichi PA-7 and PA-5 amps
  228. Forte Model 1 needs new toroid transformer I think...
  229. 10 uf Aeon cap availability for B-1?
  230. output impedance of Pearl ?
  231. Use Mercury-vapored Lamps for Zen-Enlightment?
  232. Building the "CodeNelson" Power Amp
  233. Mica Insulators for Toshiba 2SJ201 & 2SK1530?
  234. Trojan warnings?
  235. looking for the PCB 22kw amp
  236. Difference in B1's
  237. This is some FET !!!
  238. an absolutelly pass labs off topic
  239. Toshiba 2sk174BL at Mouser
  240. B1 and impedance matching?
  241. Class A mosfet idle issue
  242. X2_Preamp quetion
  243. UGS preamp for sale?!
  244. It works and doesn't Hum!
  245. Dynamic Bias - Active Bias - Automatic/Self biased - Overview wanted
  246. J-JLH or PLH-J ?
  247. Swapping Threshold S & SA frontboards.
  248. B1 question
  249. Fairchild Amplifier A00-6
  250. Spare faceplate for S/500 ?

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