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  1. A simple 2-Ch mixer, suggestions, ideas?
  2. O2 Amp Build - Resistor Question
  3. How to bypass volume potentiometer Sennheiser PC360
  4. DC protection for headphones
  5. Should replacement headphone cable telescope the shield?
  6. Headphone Attenuator, Or do I need an amp
  7. starting diy with a cmoy
  8. Neodymium Magnets - Strength/Weight
  9. Which Class-A Build?
  10. Headphone Mic Wiring
  11. Portabel Headphone Amplifier
  12. Precission EQ of Headphones
  13. Ribbon Microphones for Noise Canceling
  14. adding 18 watt valve amp on pc
  15. 5x5 Headphone amplifier/Preamplifer
  16. Headphone amp?
  17. Isodynamic Planar Magnetic Headphones
  18. ATH-DN1000USB Audio Technica DNote Digital USB Headphone
  19. Simple SE buffer, any better idea ?
  20. Ribbon Drivers in Headphones
  21. 600 Ohm headphones that are not Beyerdynamic
  22. First time building CMOY - Need some help
  23. specification of headphone
  24. Differences in headphones and speaker amps
  25. Head 'n' HiFi - Walter: O2 Headphone Amp Kit
  26. head amp for AKG K-2xx serie(600 Ohm)
  27. High Performance Class A Current Feeback Headphone Amplifier
  28. Inverting CMOY with inverting DC servo for 5V USB
  29. Output Resistor on Bravo V2
  30. First build, needing a little direction
  31. cmoy tube amp... mic amp?
  32. Headphone insert
  33. Two stage opamp amplifier PCB 5x5cm
  34. Classic-50mW
  35. OPA2134 headphone amplifier or recommend something better
  36. Replacing power MOSFETs in SDS Labs headphone amplifier
  37. Headphone amplifier (Lavardin Follower)
  38. One Ohm Resistor Separating Grounds?
  39. Power handling value of headphone drivers?
  40. Turning stereo signal to two mono signals
  41. Hybrid Headphone Amplifier
  42. problem with my first lme49723 amp
  43. Theoretical Full Range Ribbon Headphones
  44. TPA6120 Resistor Question
  45. Cmoy voltage fluctuation problem
  46. High-voltage hybrid headphone amp
  47. Why such a large input series resistor?
  48. inductor+resistor network for headphone amp output?
  49. My Own Headphone Amp
  50. Diy headphone options for AKG k701's
  51. OPA2134 Input Stage...
  52. OPA2134+LM6172 composite amp ?
  53. dual purpose amp question.
  54. importance of output impedance for headphones?
  55. AKG 601 cable really BI-WIRE?
  56. OP-amp getting hot
  57. Headphone Amplifier project
  58. Modifying the SMSL SAP VI for low impedance headphones
  59. artwork on cans?
  60. My first Desktop HPA
  61. Volume control
  62. Best way to implement a voltage gain stage with opamp?
  63. DIY HEADPHONES
  64. Audeze LCD poor comfort – any mods?
  65. Headphone capsules: OEM stuff
  66. OPA2134/IRF510 Schematic...
  67. Need Headphone Amp Schematic for NJM4556
  68. Headphones for me, speakers for wife
  69. Headphone amp level = line level? (Maybe obvious question)
  70. My first HPA design...comments please!
  71. Transparent & Objective: My Objective 2 build
  72. My O2 Portable Amp
  73. O2 Front Panel
  74. My LM5532 Headphone Amplifier project
  75. CMOY with Common Collector Buffer
  76. CMoy Desktop with Buffers
  77. Objective o2 diy no sound
  78. Cmoy help please!
  79. µCmoy - My take on the portable CMoy amp
  80. My Headphone amp. Very diy...
  81. Opa2134 Max. Power dissipation
  82. 49600 single ended amp; I blew up the output caps!
  83. MultiLoop Amp Output impedance
  84. Need a small amplifier
  85. OPA2134 in parallel
  86. Desktop Cmoy with NJM4556 Buffers
  87. Portable headphone amp
  88. NJM4556 Output Impedance
  89. TPA6120A2 Input Bias Voltage Protection
  90. geek Wave DAP
  91. HPA-1 Class A Headphone Amplifier
  92. Very good Headphone Amplifier
  93. CMOY problem - any ideas welcome
  94. CMOY problem - any ideas welcome
  95. CMOY issues - all ideas welcome
  96. HELP: tuning for AKG601 + MJ mini tube amp
  97. Crosstalk issue with homebrew headphone amps
  98. A composite with LT1210 - another way of doing it
  99. CMoy Opa2134 minimum Gain
  100. Cmoy vs Chipamps
  101. DIY portable USB headphone AMP/DAC- recommended ICs?
  102. My first amp!
  103. Pot before a high pass filter
  104. CMoy Mod for drive speakers
  105. Old School tda2003 Headphone amp
  106. Noobie looking for a cheap heaphones amp
  107. Headphone amp from AN-272 Op Amp Booster Designs
  108. Elektor improved headphone preamp. Is it good quality?
  109. Cmoy with RA input?
  110. GAMECOM Headphone Cable
  111. Stereo crosstalk gets worse with frequency?
  112. Decware ZKIT3 Clipping
  113. WARNING hillyhifi
  114. 49600 Electrostatic Discharge Concerns
  115. So, your Grados are too bright?
  116. o2 flush gain switch?
  117. clip on heat sinks for TO-263
  118. Looking for a closed HP driver
  119. Headphone amp with RCA bypass grounding
  120. About Crossfeed concept
  121. Optimizing a TPA6120a2 layout
  122. Quality 6.35mm Stereo Headphone Socket?
  123. cmoy amp suggestions
  124. simple, high performance amp using DRV134?
  125. General Headphone Amplifier Survey
  126. O2 headamp PM latch PC board to stop O2 low battery buzzing
  127. Headphone system - volume pot placement.
  128. 2 wires for Return Terminal and 1 wire for (+) Terminal in EXPENSIVE Headphone cable
  129. Too simple MOSFET ESL amplifier
  130. summing to mono
  131. Inexpensive O2 faceplates on Ebay
  132. Headphone amp on perfboard: layout critics welcome
  133. *For Sale* objective 2 Failed to launch *For Sale*
  134. Producing Headphones
  135. Need help building a headphone relay
  136. Low cost Stax headphone amplifier
  137. Douglas self_Ground cancelling & 0-impedance ??
  138. 3,5 to RCA cable
  139. RJM Sapphire build thread:
  140. Mistakenly ordered a 100k pot for O2 amp.
  141. Broskie Headphone Amp - frequency response
  142. Brig, any thoughts?
  143. Help with volume independent humming...
  144. Benchmark headphone amp-white paper by John S.
  145. Simplest headphone amp circuit (something like you'd get in a walkman or MP3 player)?
  146. ATTN: Beyerdynamic owners
  147. new opamps break in
  148. 32 Ohm- actual impedance at diff. frequencies?
  149. Gilberd headphone amplifier
  150. Acoustics in closed vs. open design confusing - help needed!
  151. O2 amp troubleshooting - help a newbie!
  152. Headphones for music production
  153. Headphone Data Sheet Table with power, voltage & current
  154. Headphone amp also used as preamp for long cable
  155. ground question
  156. Adventures in Headamp Country
  157. GIBRID TELEFONE AMP.
  158. Grado SR60 and a near field sub
  159. SCHURTER - 4802.2330 - SOCKET, 3.5MM JACK, PCB, 3POLE
  160. Receiver Headphone output - modifications?
  161. Headphone amplifier that runs on 5V?
  162. Headphones that pick up FM transmitted stations?
  163. Components for KA2209 headphone amplifier?
  164. stereo jacks look dangerous!
  165. Minimal headphone circuit.
  166. +/- 8/10V from 5V USB power converter
  167. Help choosing replacement headphones
  168. Bluetooth Headphones - Bluedio's "R+"
  169. Need help understanding current loops...
  170. Little-Bear B1 modding..
  171. Headphone amplifier using SJ2520
  172. Wich Over-Ear Headphones and a Soundcard or DAC/AMP Combo?
  173. How to DIY headphones?
  174. 19J6 Millett amp
  175. Valuable dual opa for headphones amp
  176. Need travel headphones < 300 dollars
  177. Objective + ODAC modifications
  178. Help my cmoy is popping caps
  179. SOHA II amp tripping
  180. cisco power supply, grounding and the Millett starving student
  181. cisco power supply, grounding and the Millett starving student
  182. Help Summing Two Headphone Outputs
  183. question re crossfeed for low imped phones
  184. 6DJ8 headphone amp
  185. THD vs bias voltage for ESL headphones
  186. Just for fun
  187. Creek OBH-21 SE problem
  188. Current source in diamond buffer
  189. Where do I start? (re: need a DIY amp project)
  190. 6N OCC 24awg single strand for headphones ?
  191. From amp w/ "bare wire" output to headphones...
  192. My new headphone amp
  193. Why are external amplifiers superior?
  194. Headphones and Hearing aids
  195. Reacheargeable CMoy Amp??
  196. Testing headphones
  197. Discrete op amp headphone amplifier module, based on Marantz
  198. Koss ESP9 Headphones Low Volume Fixed!
  199. Please help with DIY headphone amp.
  200. Huginn, High performance, Class A, Lateral FET headphone amplifier
  201. MAT12 / MAT14 based headphone amp
  202. DC servo for Sijosae Buffer
  203. connect two inverting op amps together
  204. Yet Another Cmoy - PCB layout with Eagle and making PCB
  205. How to prevent unwanted volume adjustments on volume knob of a portable amp
  206. Project Ember ?
  207. O2 and power questions...
  208. Beyerdynamic A1 clone gold, opamp rolling
  209. Is there a better way to implement buf634 other than place in a a loop?
  210. An early look at my new HPA design
  211. O2 XLR, St/Mono swtich, etc Mod. ?'s
  212. A question regarding bass boost and output buffers
  213. O2 headamp output booster PCB
  214. cMoybb op amp rolling with AD797BRZ
  215. Millett Hybrid Starving Student (12AU7)
  216. Good capacitors for cmoy
  217. mysterious headphones
  218. New 4 layer LME49610 Headphone Amplifier D1
  219. Simple Headphone's Amp for beginner
  220. upgrading x-can V1? anyone?
  221. Headphone Amps DIY for beginners
  222. some question about headphone amp (possibly the o2)
  223. Unknown Stax Headphones for SRD-7
  224. Moskido Hybrid headphone amplifier! Help needed
  225. Lowest capacitance hum-rejecting 4-wire headphone cable configuration
  226. Best amp possible for the hd-650
  227. Looking for a Headphone Amplifier
  228. Shure Earphones SE846
  229. Headphone equalization hardware and software
  230. VSSA FOR HEADPHONE
  231. pcb layout for grado ra1 ?
  232. grado ra1 clone
  233. Szekeres vs. PRR-SOL amplifier
  234. Optimal grounding
  235. 4 channel stereo mixer
  236. New PC setup.
  237. Class A Heaphone Amp
  238. DIY Headphone Tap + Passive Mixer
  239. Beats by Dr Dre headphones or alternative models/brands?
  240. In line sound limiter for headphones
  241. Adjustable Ear phone volume limiter
  242. MOSFET follower to my phone
  243. Crazy CMOY board
  244. starving student vs jonokuchi or hybrid vs tubes for hd600 and sr80i ?
  245. Tube/SS OTL single tube recommendations
  246. Pseudo Bravo headphone amplifier
  247. PUSH-PULL HEADPHONE AMP
  248. Single valve amp
  249. My desktop Objective2 amp
  250. O2 loud turn on transient fix help...

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