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  1. Balance control tip for newbee's
  2. Ebay win - is this any good?
  3. 6sn7 pse amp for altec lansing 604E
  4. "Cockeyed Bridge" with damper diode?
  5. Mac 2100 Hybrid
  6. Single-Stage Hybrid Cascode Power Amp
  7. New to Tube amps, heathkit question
  8. 6AS7 OTL PL build
  9. On Bootstrapping diodes for UL G2 MOSFET
  10. Chasing Aikido "hum"
  11. valve monobloc designs
  12. 7A5 is a good driver for the 300B ?
  13. Parallel Push Pull 6V6 design
  14. Black cat caps?
  15. Soundstage
  16. Brains & Brawn CF : where's the catch ?
  17. ISO-TANGO to quit
  18. Shifting reflective loads using secondary taps?
  19. VTL -- 20 6550's a side and their xfmrs
  20. "Diamond" tube preamp with 12au7
  21. Wich factory made this tube ?
  22. Bootstrapped Cathode Coupled Amplifier
  23. OTL 6AS7
  24. Diode performance testing
  25. Monacor SA-10
  26. Volume Control Hum
  27. Stromberg-Carlson AP-50
  28. 5 wire and 3 wire output transformer change ?
  29. Yaqin mc 10L
  30. Can OTL Ciclotron amp use solid state regulated PS?
  31. Cross-channel overtalk with strange effects
  32. Why 6.3V?
  33. KT88 Williamson Design Questions
  34. Winding a center-tap secondary
  35. HV delay switch
  36. McIntosh MC-30...Balanced Input Feasible?
  37. Designing line driver / pre-amp
  38. Bucking and boosting a tube power transformer
  39. 33A-158M
  40. All DHT integrated amp
  41. 6N1P
  42. basic query - Pete Millett 807 board.
  43. Tube Tester with undocumented tubes
  44. "Fritz" the Boston/RI tube guy - ANYONE know what became of him??
  45. EI yugoslavia gone forever.
  46. Quicksilver 8417 Design - Stay with it or modify?
  47. Looking for some advice on odd preamp noise issue
  48. Tubes in an opamp feedback loop ?
  49. Jensen P-P Cathode Follower
  50. Cathode follower rigorous definition.
  51. Little Bear P3 ?!?! opinions ?
  52. NOS GU-81
  53. OPT endbell color!
  54. Music Angel kt88 with unbalanced output.. help me!
  55. Heater Supply Center Tap
  56. SCA-35 Pot noise
  57. Conrad Johnson MV 55
  58. Comments on 6C33C-B ARG OTL
  59. Construction tips for high voltage amps.
  60. 6L6 bias
  61. came across Mingda Tube king mono blocks
  62. a lot of noise
  63. El84 pp Amp problem
  64. Power on filament current surge question
  65. Its likely a repost but W/e
  66. Scored some 8236's....
  67. What causes valve to glow red inside ?
  68. Tubes and radioisotope decay
  69. PSUDII Question
  70. DIY Bias Buddy
  71. Recommend me a high power OPT
  72. Design Shorting Tubes?
  73. Microsoft Tube Amp and Speakers
  74. S5 K-16LS Tone Control - Help Please
  75. SEUL Circuit for PL519, has anyone here built this?
  76. Motorola three channel
  77. Your own builders book
  78. WE91A - high frequency roll off
  79. Dynaco MarkIII dimensions
  80. Leak TL12+ smoothing capacitors.
  81. Crate Palomino V8 potentiometer replacement
  82. Question about failing 6550 output
  83. Need help converting Ampex 960 R2R to a preamp...
  84. 5751 SPICE Model -- for Poddwatt II
  85. Configuring an Audio Transformer for 8 Ohmsuring
  86. OTL Blocking cap / RC filter
  87. What do you think..OP Tx
  88. Does anyone have GA399MA.pdf?
  89. New Amp Build, First Post
  90. Twisting HV leads
  91. Phono MC/MM Stage like Audio Space Reference Two RIAA Section
  92. Help with AVO MK IV Meter
  93. Why use a pentode?
  94. Filter choke temperature concerns
  95. Is my output transformer damaged?
  96. Parafeed without a cap
  97. Edcor Transformer Problems
  98. From The Daft Idea Department
  99. Do I need a resistor between plates? pic included.
  100. Tube preamp overheating characteristics?
  101. Valve amplifier sounds great
  102. volume pot hum at low and high volume
  103. Thank You
  104. Help Needed ;)
  105. Mullard EL-34: new vs vintage
  106. A new IC for monitoring tubes
  107. 6L6 transformer on EL84
  108. Output transformer design
  109. Tubes4HiFi preamp questions
  110. Newbie advice - Phono Preamp/1st electronics build
  111. Got a HeathKit, now what to do?
  112. 4P1L push pull amp with Lundahl zero global feedback
  113. 12AQ5 SE Amp Issue
  114. ISO a motorboat
  115. Tube characteristic - Originates from pre or power amp tubes?
  116. swapping console amps...
  117. swapping console amps...
  118. Hum issue in PAS Aikido
  119. Hammond Transformer Warranty
  120. 6CB5 in triode PP?
  121. Input capacitance when tube is not conducting
  122. What would you build with these output transformers?
  123. Need help with new tube for my amp
  124. Does the method for loading the plate affect gain of the stage?
  125. Slightly Sick Amplifier
  126. OP Tx for signal tubes in Headphone amps
  127. Listing of Radio Amateur/HAM Flea Markets In Europe
  128. need mac kit 30 transformer
  129. Is this transformer saturation? (pictures inside)
  130. Did I use the LR8 in this EF86 preamp correctly?
  131. Who recognizes the chassis of this amp
  132. Sweep tubes in Push-Pull-Parallel
  133. EZ125 Quad KT88 Project
  134. Need a help! OPT design assistant software
  135. Ready To Build the Other
  136. Harman Kardon Citation II
  137. Relays for tube voltages
  138. Okay, Can someone suggest if this PSU can work
  139. ELROG 211 and 845 tubes
  140. Has anyone tried this tube preamp
  141. filament choke testing
  142. Grounded-Grid MC Head Amp for 2x PC900 and Lyra Delos
  143. output transformer sizing - is there such a thing as to big?
  144. Advice for dummies...from a new to the forum dummy
  145. Counterpoint Tech
  146. Line Magnetic 211-IA: Schematic?
  147. Help with harmon kardon a50k
  148. anyone ID these Magnecord amplifiers?
  149. vintage vacuum audio site
  150. Hiraga preamp line+phono 4xECC81 SRPP
  151. Why no simple 2-stage EL34 PP amps?
  152. Dynaco MKIII mod
  153. Blown Up Sir...
  154. Leak stereo20
  155. FFT Hanning Data
  156. Elevated Filament Question
  157. what do you think about this lv linestage?
  158. PCM1798 ECC83/EL84 PP UL balanced combo
  159. I am Trying to Design this Darling Amplifier
  160. Real power pentode recommendation
  161. bridge with CT: can I do that?
  162. Who makes nice pc board for tubes ?
  163. pse300B
  164. 1948 Wireless World - 50 Watt Amp
  165. Akido preamp suggestions.
  166. 6CM5 MKII
  167. DC coupled 6P15P
  168. Switchable 45/VT-52 Amp
  169. Optransformer for 6B4G?
  170. OLSON TUBE AMP AM-158
  171. 6922 preamp idea
  172. Tube SPDIF output
  173. One power tube going hot at idle
  174. schematic to learn by
  175. Audioromy schematic
  176. 8236's
  177. Need a 4060 model on LTSpice
  178. vt86pp 6v6
  179. SALAS hv with 150V
  180. Fender Tweed Champ Kits/Parts
  181. Aikido 12Vac
  182. Looking for expertise in adjusting Williamson amp
  183. Help with elevating a heater supply
  184. Preamp EQ
  185. Need help identifying this amp
  186. Phillips FX737A Rectifier
  187. wiring a transformer on a Scott 299
  188. DC/DC stepup for valve projects
  189. 807 SE Amp
  190. HELP With VOX AC100CPH
  191. Stromberg Carlson ASR 220C blowing fuse
  192. EF806 pentode + CCS
  193. Transformer Identification
  194. Hickok 800A line adjust problem
  195. Heathkit AA 121 parts
  196. Conrad Johnson PV-8: how to convert 110v to 220v
  197. Help me understand Edcor wiring?
  198. Another paralleled to single push-pull EL84 mod.
  199. Sca35 tone controls
  200. Tube preamp noise
  201. Fountek Tube Amp
  202. Choke & Transformer Positioning Problem
  203. The adventure time tube amp- Did any catch it?
  204. Input wiring question
  205. Let's talk triode-pentode
  206. Tried failed, looking for suggestions
  207. Need HELP converting Bogen MX30a pa into a preamp for recording
  208. Edcor Wrong Transformer...
  209. 812A Build
  210. Still not sure where to start
  211. Will cooling fan extend life of old caps & transformers? Or just make worse w dust?
  212. RCA tube amp woes/hum/ground
  213. EF86 microphony
  214. John Broskie Kits
  215. Refurbish Conrad Johnson Premier Eight
  216. 4tube Philco amp project...
  217. Thoughts on bias for PPP
  218. 2012's Acquired Parts- ..Custom Build Anyone?
  219. Can I use a variable voltage cieling fan switch as a variac?
  220. Audio research LS2 hiss and hum... need help
  221. saba electro sound
  222. Ra on C3g and 6C45pi?
  223. Partial Feedback System
  224. An Electronic Loss Compressor
  225. K-12g one channel louder than the other
  226. Sun SV2a3 or 45?
  227. Red imP(asse)
  228. An application of C-Vac: the SolidGlass amplifier
  229. Fixing crooked laminate stacks?
  230. EF184 driver
  231. Woo Audio WA7 temperature
  232. Resistor w/cap or LED or battery bias?
  233. Transformers Back to back vs. Voltage Doubler
  234. 211: 75W or 100W?
  235. Does really need a balanced preamp ?
  236. Power Transformer Hum
  237. Options for how to use this old tube PA amp? > 200W
  238. Flash getter question
  239. Heath W4 Output Xfmr - anyone measure one??
  240. Tube buffer with 6n3-EV
  241. First time with hi-fi, need some advise with amp desing
  242. Newbie wants to build SET 6C33C
  243. Another PP GU50
  244. SE Waveform
  245. Problem with CCS for filaments
  246. UL / Distributed Load - Screen vs. CFB Winding Ratios
  247. 50W PP - KT88 Build
  248. OP Tx and PPP to PP change over
  249. I need a little more advice on a Glassware Janus shunt regularor
  250. Pentode noise

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