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

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