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  1. 5x5 Headphone amplifier/Preamplifer
  2. Headphone amp?
  3. Isodynamic Planar Magnetic Headphones
  4. ATH-DN1000USB Audio Technica DNote Digital USB Headphone
  5. Simple SE buffer, any better idea ?
  6. Ribbon Drivers in Headphones
  7. 600 Ohm headphones that are not Beyerdynamic
  8. First time building CMOY - Need some help
  9. specification of headphone
  10. Differences in headphones and speaker amps
  11. Head 'n' HiFi - Walter: O2 Headphone Amp Kit
  12. head amp for AKG K-2xx serie(600 Ohm)
  13. High Performance Class A Current Feeback Headphone Amplifier
  14. Inverting CMOY with inverting DC servo for 5V USB
  15. Output Resistor on Bravo V2
  16. First build, needing a little direction
  17. cmoy tube amp... mic amp?
  18. Headphone insert
  19. Two stage opamp amplifier PCB 5x5cm
  20. Classic-50mW
  21. OPA2134 headphone amplifier or recommend something better
  22. Replacing power MOSFETs in SDS Labs headphone amplifier
  23. Headphone amplifier (Lavardin Follower)
  24. One Ohm Resistor Separating Grounds?
  25. Power handling value of headphone drivers?
  26. Turning stereo signal to two mono signals
  27. Hybrid Headphone Amplifier
  28. problem with my first lme49723 amp
  29. Theoretical Full Range Ribbon Headphones
  30. TPA6120 Resistor Question
  31. Cmoy voltage fluctuation problem
  32. High-voltage hybrid headphone amp
  33. Why such a large input series resistor?
  34. inductor+resistor network for headphone amp output?
  35. My Own Headphone Amp
  36. Diy headphone options for AKG k701's
  37. OPA2134 Input Stage...
  38. OPA2134+LM6172 composite amp ?
  39. dual purpose amp question.
  40. importance of output impedance for headphones?
  41. AKG 601 cable really BI-WIRE?
  42. OP-amp getting hot
  43. Headphone Amplifier project
  44. Modifying the SMSL SAP VI for low impedance headphones
  45. artwork on cans?
  46. My first Desktop HPA
  47. Volume control
  48. Best way to implement a voltage gain stage with opamp?
  49. DIY HEADPHONES
  50. Audeze LCD poor comfort – any mods?
  51. Headphone capsules: OEM stuff
  52. OPA2134/IRF510 Schematic...
  53. Need Headphone Amp Schematic for NJM4556
  54. Headphones for me, speakers for wife
  55. Headphone amp level = line level? (Maybe obvious question)
  56. My first HPA design...comments please!
  57. Transparent & Objective: My Objective 2 build
  58. My O2 Portable Amp
  59. O2 Front Panel
  60. My LM5532 Headphone Amplifier project
  61. CMOY with Common Collector Buffer
  62. CMoy Desktop with Buffers
  63. Objective o2 diy no sound
  64. Cmoy help please!
  65. µCmoy - My take on the portable CMoy amp
  66. My Headphone amp. Very diy...
  67. Opa2134 Max. Power dissipation
  68. 49600 single ended amp; I blew up the output caps!
  69. MultiLoop Amp Output impedance
  70. Need a small amplifier
  71. OPA2134 in parallel
  72. Desktop Cmoy with NJM4556 Buffers
  73. Portable headphone amp
  74. NJM4556 Output Impedance
  75. TPA6120A2 Input Bias Voltage Protection
  76. geek Wave DAP
  77. HPA-1 Class A Headphone Amplifier
  78. Very good Headphone Amplifier
  79. CMOY problem - any ideas welcome
  80. CMOY problem - any ideas welcome
  81. CMOY issues - all ideas welcome
  82. HELP: tuning for AKG601 + MJ mini tube amp
  83. Crosstalk issue with homebrew headphone amps
  84. A composite with LT1210 - another way of doing it
  85. CMoy Opa2134 minimum Gain
  86. Cmoy vs Chipamps
  87. DIY portable USB headphone AMP/DAC- recommended ICs?
  88. My first amp!
  89. Pot before a high pass filter
  90. CMoy Mod for drive speakers
  91. Old School tda2003 Headphone amp
  92. Noobie looking for a cheap heaphones amp
  93. Headphone amp from AN-272 Op Amp Booster Designs
  94. Elektor improved headphone preamp. Is it good quality?
  95. Cmoy with RA input?
  96. GAMECOM Headphone Cable
  97. Stereo crosstalk gets worse with frequency?
  98. Decware ZKIT3 Clipping
  99. WARNING hillyhifi
  100. 49600 Electrostatic Discharge Concerns
  101. So, your Grados are too bright?
  102. o2 flush gain switch?
  103. clip on heat sinks for TO-263
  104. Looking for a closed HP driver
  105. Headphone amp with RCA bypass grounding
  106. About Crossfeed concept
  107. Optimizing a TPA6120a2 layout
  108. Quality 6.35mm Stereo Headphone Socket?
  109. cmoy amp suggestions
  110. simple, high performance amp using DRV134?
  111. General Headphone Amplifier Survey
  112. O2 headamp PM latch PC board to stop O2 low battery buzzing
  113. Headphone system - volume pot placement.
  114. 2 wires for Return Terminal and 1 wire for (+) Terminal in EXPENSIVE Headphone cable
  115. Too simple MOSFET ESL amplifier
  116. summing to mono
  117. Inexpensive O2 faceplates on Ebay
  118. Headphone amp on perfboard: layout critics welcome
  119. *For Sale* objective 2 Failed to launch *For Sale*
  120. Producing Headphones
  121. Need help building a headphone relay
  122. Low cost Stax headphone amplifier
  123. Douglas self_Ground cancelling & 0-impedance ??
  124. 3,5 to RCA cable
  125. RJM Sapphire build thread:
  126. Mistakenly ordered a 100k pot for O2 amp.
  127. Broskie Headphone Amp - frequency response
  128. Brig, any thoughts?
  129. Help with volume independent humming...
  130. Benchmark headphone amp-white paper by John S.
  131. Simplest headphone amp circuit (something like you'd get in a walkman or MP3 player)?
  132. ATTN: Beyerdynamic owners
  133. new opamps break in
  134. 32 Ohm- actual impedance at diff. frequencies?
  135. Gilberd headphone amplifier
  136. Acoustics in closed vs. open design confusing - help needed!
  137. O2 amp troubleshooting - help a newbie!
  138. Headphones for music production
  139. Headphone Data Sheet Table with power, voltage & current
  140. Headphone amp also used as preamp for long cable
  141. ground question
  142. Adventures in Headamp Country
  143. GIBRID TELEFONE AMP.
  144. Grado SR60 and a near field sub
  145. SCHURTER - 4802.2330 - SOCKET, 3.5MM JACK, PCB, 3POLE
  146. Receiver Headphone output - modifications?
  147. Headphone amplifier that runs on 5V?
  148. Headphones that pick up FM transmitted stations?
  149. Components for KA2209 headphone amplifier?
  150. stereo jacks look dangerous!
  151. Minimal headphone circuit.
  152. +/- 8/10V from 5V USB power converter
  153. Help choosing replacement headphones
  154. Bluetooth Headphones - Bluedio's "R+"
  155. Need help understanding current loops...
  156. Little-Bear B1 modding..
  157. Headphone amplifier using SJ2520
  158. Wich Over-Ear Headphones and a Soundcard or DAC/AMP Combo?
  159. How to DIY headphones?
  160. 19J6 Millett amp
  161. Valuable dual opa for headphones amp
  162. Need travel headphones < 300 dollars
  163. Objective + ODAC modifications
  164. Help my cmoy is popping caps
  165. SOHA II amp tripping
  166. cisco power supply, grounding and the Millett starving student
  167. cisco power supply, grounding and the Millett starving student
  168. Help Summing Two Headphone Outputs
  169. question re crossfeed for low imped phones
  170. 6DJ8 headphone amp
  171. THD vs bias voltage for ESL headphones
  172. Just for fun
  173. Creek OBH-21 SE problem
  174. Current source in diamond buffer
  175. Where do I start? (re: need a DIY amp project)
  176. 6N OCC 24awg single strand for headphones ?
  177. From amp w/ "bare wire" output to headphones...
  178. My new headphone amp
  179. Why are external amplifiers superior?
  180. Headphones and Hearing aids
  181. Reacheargeable CMoy Amp??
  182. Testing headphones
  183. Discrete op amp headphone amplifier module, based on Marantz
  184. Koss ESP9 Headphones Low Volume Fixed!
  185. Please help with DIY headphone amp.
  186. Huginn, High performance, Class A, Lateral FET headphone amplifier
  187. MAT12 / MAT14 based headphone amp
  188. DC servo for Sijosae Buffer
  189. connect two inverting op amps together
  190. Yet Another Cmoy - PCB layout with Eagle and making PCB
  191. How to prevent unwanted volume adjustments on volume knob of a portable amp
  192. Project Ember ?
  193. O2 and power questions...
  194. Beyerdynamic A1 clone gold, opamp rolling
  195. Is there a better way to implement buf634 other than place in a a loop?
  196. An early look at my new HPA design
  197. O2 XLR, St/Mono swtich, etc Mod. ?'s
  198. A question regarding bass boost and output buffers
  199. O2 headamp output booster PCB
  200. cMoybb op amp rolling with AD797BRZ
  201. Millett Hybrid Starving Student (12AU7)
  202. Good capacitors for cmoy
  203. mysterious headphones
  204. New 4 layer LME49610 Headphone Amplifier D1
  205. Simple Headphone's Amp for beginner
  206. upgrading x-can V1? anyone?
  207. Headphone Amps DIY for beginners
  208. some question about headphone amp (possibly the o2)
  209. Unknown Stax Headphones for SRD-7
  210. Moskido Hybrid headphone amplifier! Help needed
  211. Lowest capacitance hum-rejecting 4-wire headphone cable configuration
  212. Best amp possible for the hd-650
  213. Looking for a Headphone Amplifier
  214. Shure Earphones SE846
  215. Headphone equalization hardware and software
  216. VSSA FOR HEADPHONE
  217. pcb layout for grado ra1 ?
  218. grado ra1 clone
  219. Szekeres vs. PRR-SOL amplifier
  220. Optimal grounding
  221. 4 channel stereo mixer
  222. New PC setup.
  223. Class A Heaphone Amp
  224. DIY Headphone Tap + Passive Mixer
  225. Beats by Dr Dre headphones or alternative models/brands?
  226. In line sound limiter for headphones
  227. Adjustable Ear phone volume limiter
  228. MOSFET follower to my phone
  229. Crazy CMOY board
  230. starving student vs jonokuchi or hybrid vs tubes for hd600 and sr80i ?
  231. Tube/SS OTL single tube recommendations
  232. Pseudo Bravo headphone amplifier
  233. PUSH-PULL HEADPHONE AMP
  234. Single valve amp
  235. My desktop Objective2 amp
  236. O2 loud turn on transient fix help...
  237. Help wanted to find an old schematic
  238. Dual TPA6120A2 headphone design to eliminate crosstalk
  239. Need an AMP recommendation, and have a couple questions.
  240. Pot value in cmoy
  241. YAHA HELP
  242. OPA827 + Diamond Buffer
  243. newbie qustion
  244. Advice on USB Soundcard / USB DAC + Amplifier
  245. 6n2 + fu32 vacuum tube tube headphone amplifier
  246. Headphone amp recommendation required?
  247. Tube Headphone amplifier suggestions 2x(1:40) transformers
  248. Different grounding, different sound quality or what can be the problem?
  249. Radio Shack Digital to Analog Converter
  250. 2SC1815 alternative for Mini Zen

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