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  1. Help choosing replacement headphones
  2. Bluetooth Headphones - Bluedio's "R+"
  3. Need help understanding current loops...
  4. Little-Bear B1 modding..
  5. Headphone amplifier using SJ2520
  6. Wich Over-Ear Headphones and a Soundcard or DAC/AMP Combo?
  7. How to DIY headphones?
  8. 19J6 Millett amp
  9. Valuable dual opa for headphones amp
  10. Need travel headphones < 300 dollars
  11. Objective + ODAC modifications
  12. Help my cmoy is popping caps
  13. SOHA II amp tripping
  14. cisco power supply, grounding and the Millett starving student
  15. cisco power supply, grounding and the Millett starving student
  16. Help Summing Two Headphone Outputs
  17. question re crossfeed for low imped phones
  18. 6DJ8 headphone amp
  19. THD vs bias voltage for ESL headphones
  20. Just for fun
  21. Creek OBH-21 SE problem
  22. Current source in diamond buffer
  23. Where do I start? (re: need a DIY amp project)
  24. 6N OCC 24awg single strand for headphones ?
  25. From amp w/ "bare wire" output to headphones...
  26. My new headphone amp
  27. Why are external amplifiers superior?
  28. Headphones and Hearing aids
  29. Reacheargeable CMoy Amp??
  30. Testing headphones
  31. Discrete op amp headphone amplifier module, based on Marantz
  32. Koss ESP9 Headphones Low Volume Fixed!
  33. Please help with DIY headphone amp.
  34. Huginn, High performance, Class A, Lateral FET headphone amplifier
  35. MAT12 / MAT14 based headphone amp
  36. DC servo for Sijosae Buffer
  37. connect two inverting op amps together
  38. Yet Another Cmoy - PCB layout with Eagle and making PCB
  39. How to prevent unwanted volume adjustments on volume knob of a portable amp
  40. Project Ember ?
  41. O2 and power questions...
  42. Beyerdynamic A1 clone gold, opamp rolling
  43. Is there a better way to implement buf634 other than place in a a loop?
  44. An early look at my new HPA design
  45. O2 XLR, St/Mono swtich, etc Mod. ?'s
  46. A question regarding bass boost and output buffers
  47. O2 headamp output booster PCB
  48. cMoybb op amp rolling with AD797BRZ
  49. Millett Hybrid Starving Student (12AU7)
  50. Good capacitors for cmoy
  51. mysterious headphones
  52. New 4 layer LME49610 Headphone Amplifier D1
  53. Simple Headphone's Amp for beginner
  54. upgrading x-can V1? anyone?
  55. Headphone Amps DIY for beginners
  56. some question about headphone amp (possibly the o2)
  57. Unknown Stax Headphones for SRD-7
  58. Moskido Hybrid headphone amplifier! Help needed
  59. Lowest capacitance hum-rejecting 4-wire headphone cable configuration
  60. Best amp possible for the hd-650
  61. Looking for a Headphone Amplifier
  62. Shure Earphones SE846
  63. Headphone equalization hardware and software
  64. VSSA FOR HEADPHONE
  65. pcb layout for grado ra1 ?
  66. grado ra1 clone
  67. Szekeres vs. PRR-SOL amplifier
  68. Optimal grounding
  69. 4 channel stereo mixer
  70. New PC setup.
  71. Class A Heaphone Amp
  72. DIY Headphone Tap + Passive Mixer
  73. Beats by Dr Dre headphones or alternative models/brands?
  74. In line sound limiter for headphones
  75. Adjustable Ear phone volume limiter
  76. MOSFET follower to my phone
  77. Crazy CMOY board
  78. starving student vs jonokuchi or hybrid vs tubes for hd600 and sr80i ?
  79. Tube/SS OTL single tube recommendations
  80. Pseudo Bravo headphone amplifier
  81. PUSH-PULL HEADPHONE AMP
  82. Single valve amp
  83. My desktop Objective2 amp
  84. O2 loud turn on transient fix help...
  85. Help wanted to find an old schematic
  86. Dual TPA6120A2 headphone design to eliminate crosstalk
  87. Need an AMP recommendation, and have a couple questions.
  88. Pot value in cmoy
  89. YAHA HELP
  90. OPA827 + Diamond Buffer
  91. newbie qustion
  92. Advice on USB Soundcard / USB DAC + Amplifier
  93. 6n2 + fu32 vacuum tube tube headphone amplifier
  94. Headphone amp recommendation required?
  95. Tube Headphone amplifier suggestions 2x(1:40) transformers
  96. Different grounding, different sound quality or what can be the problem?
  97. Radio Shack Digital to Analog Converter
  98. 2SC1815 alternative for Mini Zen
  99. Two-Way Headset Wiring
  100. whats worng with this circut
  101. Phono amp top slot board for O2 amplfier in B3 case
  102. Szekeres VE protection diodes?
  103. Headphone Amp Feels 'Electrified'
  104. Design Issue: Cascaded passive filer stages
  105. Headphone amp between source & amplifier - how to passthrough?
  106. Open Source Headphone Amplifier
  107. OPA2132/4 for headphones
  108. O2 LiPo Daughterboard
  109. Class AB with op-amp input, audible noise
  110. PCB check for a simple amp
  111. Home meade design AMP prob's
  112. Noise - how much is too much?
  113. Massively parallel LME49990 headamp
  114. Building the O2 - A novices build experience
  115. A Through-hole "Wire" Amp
  116. Adding a headphone output to CD PLAYER?
  117. Rod Elliot 113 - Headphone amp TOO MUCH GAIN
  118. Dual O2-Inspired, SMD Headphone Amp
  119. Low impedance phones, Please suggest amp design?
  120. Huge change in audio quality simply by changing the pads on headphones?
  121. what next, help please
  122. DIY isodynamic headphones?
  123. DIY replace jack plug: strange colors
  124. Canjam 2013 ?
  125. Can you disable DAC on O2 ODAC?
  126. Can i connect my sony pulse wireless heaset to a TV ?
  127. Audio controlled voltage mod.
  128. AKG K518
  129. Composite amplifier in class A
  130. A great Fostex T50RP amp?
  131. helmet speakers
  132. Ambisonics, and listening to binaural via speakers
  133. Cheap but linear headamp
  134. Thin Durable Flexible Wire to Fix Headphones
  135. If headphones are out-of-phase, can you hear it?
  136. Oatley K272 DC power options.
  137. A curious Inquiry involving internal headphone amp/powering multiple earbuds?
  138. recommend me a valve headphone amp - Beyer T1 & AKG Q701 etc
  139. HP amp out impedance vs. HP impedance
  140. O2 help with bass boost and 1/4 jack mods
  141. Anyone ever used LM4780 for headphones?
  142. Stax Type 1 headphone, anyone know what these are?
  143. DIY balanced headphone amp?
  144. Simple headphone amp from spare parts
  145. SENNHEISER HD800 Source Impedance
  146. TDA1308 - changing gain resistors
  147. Headphone Amp Selection?
  148. Classic v1 headphone amplifier
  149. RFI problems on diy headphone amp.
  150. power flickering on tube cmoy amp
  151. question about a circuit
  152. hello all is a dac worth buying
  153. Passive bell shaped EQ for headphones
  154. GLASS-SAND CLASS A TUBE MOSFET HYBRID HEADPHONE AMP
  155. HD650 can I fix this?
  156. Headphones Amplifier HIFI
  157. An "O3" - 35% smaller SMD RS O2 headphone amp version
  158. need help with headphones
  159. Moe'stevens O2
  160. Need help - using J A Burgess 45 SE amp for headphones
  161. Akai EIE Pro or Lexicon I-O|22 for AKGQ 701 [Specs inside]
  162. Power switch driver board(Momentary switch) + output relay board(delayed ON/fast OFF)
  163. OpAmps to drive HD650 from AK4399 Vout DAC
  164. Where to place current limit output resistor?
  165. Headphone amp noise. Help!
  166. USB DAC & headphone Amp with 3D Printed Enclosure
  167. DIY amp/DAC with better measurements than O2/ODAC?
  168. Battery powered 4W amp
  169. stuffing cotton balls in headphones?
  170. Measuring headphone FR?
  171. LM1875 based amp by Sijose
  172. A version of an O2 Desktop Amp (ODA)
  173. ESP P113 voltage gain of 1, will it work?
  174. The No Headphone Amp!
  175. Help Needed - Push Pull Transformer replacement
  176. Improving Bass Response On A Popular Hybrid Design
  177. Koss Esp-9 to ESP-9b Conversion... Help needed with grounding scheme
  178. High power headphone amp
  179. New Modular Headphone Amplifier
  180. full range planar headphones using neodynium magnets
  181. JLH Chiarra or Hifisonix Class A buffer?
  182. Sennhesier HD424
  183. 2-channel regular ground, dual mono or "balanced"/bridged?
  184. Jack Plug Wiring Help
  185. New Portable Amplifier Project started
  186. Pimeta V2 or O2?
  187. JLH Class A headphone amp from ETI not WW
  188. Left/Right Channel balancer
  189. Choosing a DC storage/rail cap for cmoy like amp
  190. Feedback resistor size - opamps
  191. Can I add a Potentiometer to these Headphones?
  192. Headphone distribution schematics
  193. Stax upgrade recomendations please.
  194. tube amp designs for low impedance headphones?
  195. headphone buffer/output for usb/dac
  196. Personal EQ & AMP for Hearing loss
  197. Grado RS1 headphones
  198. MOSFET Headphone Amplifier
  199. Lehmann clones
  200. which amplifier kit on ebay?
  201. Koss HV/1LC - specifications
  202. Headphone maximum power
  203. Output device for SE Hybrid Headphone Amp
  204. Output impedance as compensation?
  205. New Headphone Amp kit supplier in OZ
  206. suggestion for a 200$ headamp
  207. Replace Blackbox m10 3-prong jack
  208. Sony MDR-V6 changed?
  209. New portable amplifier
  210. New portable amplifier
  211. Stax SRM-212 repair?
  212. Audiophile Gear vs. ODAC/O2 (DAC’s and Amp’s)
  213. Sennheiser HD650 vs AKG Q701 QJ
  214. Split-supply portable headphone amp / DAC
  215. A47 / Crystal CMoy
  216. Electrostatic Headphones
  217. akg k140 earpads
  218. Which design is better for portable linear amplification?
  219. Midgård, compact, low distortion, high quality, Class A Lateral FET headamp
  220. Copper for Headphone Amp Chassis
  221. The DAO SE all-FET Class-A ZGF Headphone Amplifier
  222. What is this?!
  223. Background noise - tube amp
  224. Am the only one who's not deaf....?
  225. Grado GS1000 died
  226. lme49600 buffering the output of a generic soundcard
  227. LMH6643 amplifier
  228. Balanced input headphone amp
  229. Rigs test
  230. Kevin Gilmore KGSSHV boards
  231. Universal Headphone Amp - fits different headphones
  232. Headphone distribution block (passive)
  233. Calculating audio transformer losses?
  234. O2 headphone amp with 4x 8.4V cells
  235. how to mix sound from notebook and external sound card and get headphones output
  236. Koss HV/1LC foam Ear Pads
  237. Any DIY/Upgrade Components Ideas for Bravo Audio V2 12AU7 HeadAmp?
  238. Class A mosfet headphone amplifier. How does it look?
  239. Headphone Connections
  240. Headphones
  241. my new MING DA MC300-EAR headphone. Would like your suggestions.
  242. Best Sounding AMP for IMOD ( Modded ipod ) LOD
  243. Any point in adding a audio transformer for more power?
  244. Convert Low V Aikido line stage to headphone use?
  245. Balder, OPA2134+BUF634 Headphone Amplifier
  246. A good Headphone Amp for AKG K240DF anybody? It's 88dB and 600ohm, Thank you.
  247. Converting an Amp to Balanced XLR
  248. Calculating output impedance of Morgan-Jones headphone amp?
  249. norrisr
  250. modulation-like distortion of music at low volumes

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