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  1. A High-Quality, High-Power Headphone Amplifier
  2. Stereo intercom for my experimental airplane
  3. [ask] Is there a way to mod a CMOY amp to have more power?
  4. Opa551 getting very hot in inverting configuration
  5. low impedence buffer
  6. A simple 2-Ch mixer, suggestions, ideas?
  7. O2 Amp Build - Resistor Question
  8. How to bypass volume potentiometer Sennheiser PC360
  9. DC protection for headphones
  10. Should replacement headphone cable telescope the shield?
  11. Headphone Attenuator, Or do I need an amp
  12. starting diy with a cmoy
  13. Neodymium Magnets - Strength/Weight
  14. Which Class-A Build?
  15. Headphone Mic Wiring
  16. Portabel Headphone Amplifier
  17. Precission EQ of Headphones
  18. Ribbon Microphones for Noise Canceling
  19. adding 18 watt valve amp on pc
  20. 5x5 Headphone amplifier/Preamplifer
  21. Headphone amp?
  22. Isodynamic Planar Magnetic Headphones
  23. ATH-DN1000USB Audio Technica DNote Digital USB Headphone
  24. Simple SE buffer, any better idea ?
  25. Ribbon Drivers in Headphones
  26. 600 Ohm headphones that are not Beyerdynamic
  27. First time building CMOY - Need some help
  28. specification of headphone
  29. Differences in headphones and speaker amps
  30. Head 'n' HiFi - Walter: O2 Headphone Amp Kit
  31. head amp for AKG K-2xx serie(600 Ohm)
  32. High Performance Class A Current Feeback Headphone Amplifier
  33. Inverting CMOY with inverting DC servo for 5V USB
  34. Output Resistor on Bravo V2
  35. First build, needing a little direction
  36. cmoy tube amp... mic amp?
  37. Headphone insert
  38. Two stage opamp amplifier PCB 5x5cm
  39. Classic-50mW
  40. OPA2134 headphone amplifier or recommend something better
  41. Replacing power MOSFETs in SDS Labs headphone amplifier
  42. Headphone amplifier (Lavardin Follower)
  43. One Ohm Resistor Separating Grounds?
  44. Power handling value of headphone drivers?
  45. Turning stereo signal to two mono signals
  46. Hybrid Headphone Amplifier
  47. problem with my first lme49723 amp
  48. Theoretical Full Range Ribbon Headphones
  49. TPA6120 Resistor Question
  50. Cmoy voltage fluctuation problem
  51. High-voltage hybrid headphone amp
  52. Why such a large input series resistor?
  53. inductor+resistor network for headphone amp output?
  54. My Own Headphone Amp
  55. Diy headphone options for AKG k701's
  56. OPA2134 Input Stage...
  57. OPA2134+LM6172 composite amp ?
  58. dual purpose amp question.
  59. importance of output impedance for headphones?
  60. AKG 601 cable really BI-WIRE?
  61. OP-amp getting hot
  62. Headphone Amplifier project
  63. Modifying the SMSL SAP VI for low impedance headphones
  64. artwork on cans?
  65. My first Desktop HPA
  66. Volume control
  67. Best way to implement a voltage gain stage with opamp?
  69. Audeze LCD poor comfort – any mods?
  70. Headphone capsules: OEM stuff
  71. OPA2134/IRF510 Schematic...
  72. Need Headphone Amp Schematic for NJM4556
  73. Headphones for me, speakers for wife
  74. Headphone amp level = line level? (Maybe obvious question)
  75. My first HPA design...comments please!
  76. Transparent & Objective: My Objective 2 build
  77. My O2 Portable Amp
  78. O2 Front Panel
  79. My LM5532 Headphone Amplifier project
  80. CMOY with Common Collector Buffer
  81. CMoy Desktop with Buffers
  82. Objective o2 diy no sound
  83. Cmoy help please!
  84. µCmoy - My take on the portable CMoy amp
  85. My Headphone amp. Very diy...
  86. Opa2134 Max. Power dissipation
  87. 49600 single ended amp; I blew up the output caps!
  88. MultiLoop Amp Output impedance
  89. Need a small amplifier
  90. OPA2134 in parallel
  91. Desktop Cmoy with NJM4556 Buffers
  92. Portable headphone amp
  93. NJM4556 Output Impedance
  94. TPA6120A2 Input Bias Voltage Protection
  95. geek Wave DAP
  96. HPA-1 Class A Headphone Amplifier
  97. Very good Headphone Amplifier
  98. CMOY problem - any ideas welcome
  99. CMOY problem - any ideas welcome
  100. CMOY issues - all ideas welcome
  101. HELP: tuning for AKG601 + MJ mini tube amp
  102. Crosstalk issue with homebrew headphone amps
  103. A composite with LT1210 - another way of doing it
  104. CMoy Opa2134 minimum Gain
  105. Cmoy vs Chipamps
  106. DIY portable USB headphone AMP/DAC- recommended ICs?
  107. My first amp!
  108. Pot before a high pass filter
  109. CMoy Mod for drive speakers
  110. Old School tda2003 Headphone amp
  111. Noobie looking for a cheap heaphones amp
  112. Headphone amp from AN-272 Op Amp Booster Designs
  113. Elektor improved headphone preamp. Is it good quality?
  114. Cmoy with RA input?
  115. GAMECOM Headphone Cable
  116. Stereo crosstalk gets worse with frequency?
  117. Decware ZKIT3 Clipping
  118. WARNING hillyhifi
  119. 49600 Electrostatic Discharge Concerns
  120. So, your Grados are too bright?
  121. o2 flush gain switch?
  122. clip on heat sinks for TO-263
  123. Looking for a closed HP driver
  124. Headphone amp with RCA bypass grounding
  125. About Crossfeed concept
  126. Optimizing a TPA6120a2 layout
  127. Quality 6.35mm Stereo Headphone Socket?
  128. cmoy amp suggestions
  129. simple, high performance amp using DRV134?
  130. General Headphone Amplifier Survey
  131. O2 headamp PM latch PC board to stop O2 low battery buzzing
  132. Headphone system - volume pot placement.
  133. 2 wires for Return Terminal and 1 wire for (+) Terminal in EXPENSIVE Headphone cable
  134. Too simple MOSFET ESL amplifier
  135. summing to mono
  136. Inexpensive O2 faceplates on Ebay
  137. Headphone amp on perfboard: layout critics welcome
  138. *For Sale* objective 2 Failed to launch *For Sale*
  139. Producing Headphones
  140. Need help building a headphone relay
  141. Low cost Stax headphone amplifier
  142. Douglas self_Ground cancelling & 0-impedance ??
  143. 3,5 to RCA cable
  144. RJM Sapphire build thread:
  145. Mistakenly ordered a 100k pot for O2 amp.
  146. Broskie Headphone Amp - frequency response
  147. Brig, any thoughts?
  148. Help with volume independent humming...
  149. Benchmark headphone amp-white paper by John S.
  150. Simplest headphone amp circuit (something like you'd get in a walkman or MP3 player)?
  151. ATTN: Beyerdynamic owners
  152. new opamps break in
  153. 32 Ohm- actual impedance at diff. frequencies?
  154. Gilberd headphone amplifier
  155. Acoustics in closed vs. open design confusing - help needed!
  156. O2 amp troubleshooting - help a newbie!
  157. Headphones for music production
  158. Headphone Data Sheet Table with power, voltage & current
  159. Headphone amp also used as preamp for long cable
  160. ground question
  161. Adventures in Headamp Country
  163. Grado SR60 and a near field sub
  164. SCHURTER - 4802.2330 - SOCKET, 3.5MM JACK, PCB, 3POLE
  165. Receiver Headphone output - modifications?
  166. Headphone amplifier that runs on 5V?
  167. Headphones that pick up FM transmitted stations?
  168. Components for KA2209 headphone amplifier?
  169. stereo jacks look dangerous!
  170. Minimal headphone circuit.
  171. +/- 8/10V from 5V USB power converter
  172. Help choosing replacement headphones
  173. Bluetooth Headphones - Bluedio's "R+"
  174. Need help understanding current loops...
  175. Little-Bear B1 modding..
  176. Headphone amplifier using SJ2520
  177. Wich Over-Ear Headphones and a Soundcard or DAC/AMP Combo?
  178. How to DIY headphones?
  179. 19J6 Millett amp
  180. Valuable dual opa for headphones amp
  181. Need travel headphones < 300 dollars
  182. Objective + ODAC modifications
  183. Help my cmoy is popping caps
  184. SOHA II amp tripping
  185. cisco power supply, grounding and the Millett starving student
  186. cisco power supply, grounding and the Millett starving student
  187. Help Summing Two Headphone Outputs
  188. question re crossfeed for low imped phones
  189. 6DJ8 headphone amp
  190. THD vs bias voltage for ESL headphones
  191. Just for fun
  192. Creek OBH-21 SE problem
  193. Current source in diamond buffer
  194. Where do I start? (re: need a DIY amp project)
  195. 6N OCC 24awg single strand for headphones ?
  196. From amp w/ "bare wire" output to headphones...
  197. My new headphone amp
  198. Why are external amplifiers superior?
  199. Headphones and Hearing aids
  200. Reacheargeable CMoy Amp??
  201. Testing headphones
  202. Discrete op amp headphone amplifier module, based on Marantz
  203. Koss ESP9 Headphones Low Volume Fixed!
  204. Please help with DIY headphone amp.
  205. Huginn, High performance, Class A, Lateral FET headphone amplifier
  206. MAT12 / MAT14 based headphone amp
  207. DC servo for Sijosae Buffer
  208. connect two inverting op amps together
  209. Yet Another Cmoy - PCB layout with Eagle and making PCB
  210. How to prevent unwanted volume adjustments on volume knob of a portable amp
  211. Project Ember ?
  212. O2 and power questions...
  213. Beyerdynamic A1 clone gold, opamp rolling
  214. Is there a better way to implement buf634 other than place in a a loop?
  215. An early look at my new HPA design
  216. O2 XLR, St/Mono swtich, etc Mod. ?'s
  217. A question regarding bass boost and output buffers
  218. O2 headamp output booster PCB
  219. cMoybb op amp rolling with AD797BRZ
  220. Millett Hybrid Starving Student (12AU7)
  221. Good capacitors for cmoy
  222. mysterious headphones
  223. New 4 layer LME49610 Headphone Amplifier D1
  224. Simple Headphone's Amp for beginner
  225. upgrading x-can V1? anyone?
  226. Headphone Amps DIY for beginners
  227. some question about headphone amp (possibly the o2)
  228. Unknown Stax Headphones for SRD-7
  229. Moskido Hybrid headphone amplifier! Help needed
  230. Lowest capacitance hum-rejecting 4-wire headphone cable configuration
  231. Best amp possible for the hd-650
  232. Looking for a Headphone Amplifier
  233. Shure Earphones SE846
  234. Headphone equalization hardware and software
  236. pcb layout for grado ra1 ?
  237. grado ra1 clone
  238. Szekeres vs. PRR-SOL amplifier
  239. Optimal grounding
  240. 4 channel stereo mixer
  241. New PC setup.
  242. Class A Heaphone Amp
  243. DIY Headphone Tap + Passive Mixer
  244. Beats by Dr Dre headphones or alternative models/brands?
  245. In line sound limiter for headphones
  246. Adjustable Ear phone volume limiter
  247. MOSFET follower to my phone
  248. Crazy CMOY board
  249. starving student vs jonokuchi or hybrid vs tubes for hd600 and sr80i ?
  250. Tube/SS OTL single tube recommendations

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