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  1. A question regarding bass boost and output buffers
  2. O2 headamp output booster PCB
  3. cMoybb op amp rolling with AD797BRZ
  4. Millett Hybrid Starving Student (12AU7)
  5. Good capacitors for cmoy
  6. mysterious headphones
  7. New 4 layer LME49610 Headphone Amplifier D1
  8. Simple Headphone's Amp for beginner
  9. upgrading x-can V1? anyone?
  10. Headphone Amps DIY for beginners
  11. some question about headphone amp (possibly the o2)
  12. Unknown Stax Headphones for SRD-7
  13. Moskido Hybrid headphone amplifier! Help needed
  14. Lowest capacitance hum-rejecting 4-wire headphone cable configuration
  15. Best amp possible for the hd-650
  16. Looking for a Headphone Amplifier
  17. Shure Earphones SE846
  18. Headphone equalization hardware and software
  19. VSSA FOR HEADPHONE
  20. pcb layout for grado ra1 ?
  21. grado ra1 clone
  22. Szekeres vs. PRR-SOL amplifier
  23. Optimal grounding
  24. 4 channel stereo mixer
  25. New PC setup.
  26. Class A Heaphone Amp
  27. DIY Headphone Tap + Passive Mixer
  28. Beats by Dr Dre headphones or alternative models/brands?
  29. In line sound limiter for headphones
  30. Adjustable Ear phone volume limiter
  31. MOSFET follower to my phone
  32. Crazy CMOY board
  33. starving student vs jonokuchi or hybrid vs tubes for hd600 and sr80i ?
  34. Tube/SS OTL single tube recommendations
  35. Pseudo Bravo headphone amplifier
  36. PUSH-PULL HEADPHONE AMP
  37. Single valve amp
  38. My desktop Objective2 amp
  39. O2 loud turn on transient fix help...
  40. Help wanted to find an old schematic
  41. Dual TPA6120A2 headphone design to eliminate crosstalk
  42. Need an AMP recommendation, and have a couple questions.
  43. Pot value in cmoy
  44. YAHA HELP
  45. OPA827 + Diamond Buffer
  46. newbie qustion
  47. Advice on USB Soundcard / USB DAC + Amplifier
  48. 6n2 + fu32 vacuum tube tube headphone amplifier
  49. Headphone amp recommendation required?
  50. Tube Headphone amplifier suggestions 2x(1:40) transformers
  51. Different grounding, different sound quality or what can be the problem?
  52. Radio Shack Digital to Analog Converter
  53. 2SC1815 alternative for Mini Zen
  54. Two-Way Headset Wiring
  55. whats worng with this circut
  56. Phono amp top slot board for O2 amplfier in B3 case
  57. Szekeres VE protection diodes?
  58. Headphone Amp Feels 'Electrified'
  59. Design Issue: Cascaded passive filer stages
  60. Headphone amp between source & amplifier - how to passthrough?
  61. Open Source Headphone Amplifier
  62. OPA2132/4 for headphones
  63. O2 LiPo Daughterboard
  64. Class AB with op-amp input, audible noise
  65. PCB check for a simple amp
  66. Home meade design AMP prob's
  67. Noise - how much is too much?
  68. Massively parallel LME49990 headamp
  69. Building the O2 - A novices build experience
  70. A Through-hole "Wire" Amp
  71. Adding a headphone output to CD PLAYER?
  72. Rod Elliot 113 - Headphone amp TOO MUCH GAIN
  73. Dual O2-Inspired, SMD Headphone Amp
  74. Low impedance phones, Please suggest amp design?
  75. Huge change in audio quality simply by changing the pads on headphones?
  76. what next, help please
  77. DIY isodynamic headphones?
  78. DIY replace jack plug: strange colors
  79. Canjam 2013 ?
  80. Can you disable DAC on O2 ODAC?
  81. Can i connect my sony pulse wireless heaset to a TV ?
  82. Audio controlled voltage mod.
  83. AKG K518
  84. Composite amplifier in class A
  85. A great Fostex T50RP amp?
  86. helmet speakers
  87. Ambisonics, and listening to binaural via speakers
  88. Cheap but linear headamp
  89. Thin Durable Flexible Wire to Fix Headphones
  90. If headphones are out-of-phase, can you hear it?
  91. Oatley K272 DC power options.
  92. A curious Inquiry involving internal headphone amp/powering multiple earbuds?
  93. recommend me a valve headphone amp - Beyer T1 & AKG Q701 etc
  94. HP amp out impedance vs. HP impedance
  95. O2 help with bass boost and 1/4 jack mods
  96. Anyone ever used LM4780 for headphones?
  97. Stax Type 1 headphone, anyone know what these are?
  98. DIY balanced headphone amp?
  99. Simple headphone amp from spare parts
  100. SENNHEISER HD800 Source Impedance
  101. TDA1308 - changing gain resistors
  102. Headphone Amp Selection?
  103. Classic v1 headphone amplifier
  104. RFI problems on diy headphone amp.
  105. power flickering on tube cmoy amp
  106. question about a circuit
  107. hello all is a dac worth buying
  108. Passive bell shaped EQ for headphones
  109. GLASS-SAND CLASS A TUBE MOSFET HYBRID HEADPHONE AMP
  110. HD650 can I fix this?
  111. Headphones Amplifier HIFI
  112. An "O3" - 35% smaller SMD RS O2 headphone amp version
  113. need help with headphones
  114. Moe'stevens O2
  115. Need help - using J A Burgess 45 SE amp for headphones
  116. Akai EIE Pro or Lexicon I-O|22 for AKGQ 701 [Specs inside]
  117. Power switch driver board(Momentary switch) + output relay board(delayed ON/fast OFF)
  118. OpAmps to drive HD650 from AK4399 Vout DAC
  119. Where to place current limit output resistor?
  120. Headphone amp noise. Help!
  121. USB DAC & headphone Amp with 3D Printed Enclosure
  122. DIY amp/DAC with better measurements than O2/ODAC?
  123. Battery powered 4W amp
  124. stuffing cotton balls in headphones?
  125. Measuring headphone FR?
  126. LM1875 based amp by Sijose
  127. A version of an O2 Desktop Amp (ODA)
  128. ESP P113 voltage gain of 1, will it work?
  129. The No Headphone Amp!
  130. Help Needed - Push Pull Transformer replacement
  131. Improving Bass Response On A Popular Hybrid Design
  132. Koss Esp-9 to ESP-9b Conversion... Help needed with grounding scheme
  133. High power headphone amp
  134. New Modular Headphone Amplifier
  135. full range planar headphones using neodynium magnets
  136. JLH Chiarra or Hifisonix Class A buffer?
  137. Sennhesier HD424
  138. 2-channel regular ground, dual mono or "balanced"/bridged?
  139. Jack Plug Wiring Help
  140. New Portable Amplifier Project started
  141. Pimeta V2 or O2?
  142. JLH Class A headphone amp from ETI not WW
  143. Left/Right Channel balancer
  144. Choosing a DC storage/rail cap for cmoy like amp
  145. Feedback resistor size - opamps
  146. Can I add a Potentiometer to these Headphones?
  147. Headphone distribution schematics
  148. Stax upgrade recomendations please.
  149. tube amp designs for low impedance headphones?
  150. headphone buffer/output for usb/dac
  151. Personal EQ & AMP for Hearing loss
  152. Grado RS1 headphones
  153. MOSFET Headphone Amplifier
  154. Lehmann clones
  155. which amplifier kit on ebay?
  156. Koss HV/1LC - specifications
  157. Headphone maximum power
  158. Output device for SE Hybrid Headphone Amp
  159. Output impedance as compensation?
  160. New Headphone Amp kit supplier in OZ
  161. suggestion for a 200$ headamp
  162. Replace Blackbox m10 3-prong jack
  163. Sony MDR-V6 changed?
  164. New portable amplifier
  165. New portable amplifier
  166. Stax SRM-212 repair?
  167. Audiophile Gear vs. ODAC/O2 (DAC’s and Amp’s)
  168. Sennheiser HD650 vs AKG Q701 QJ
  169. Split-supply portable headphone amp / DAC
  170. A47 / Crystal CMoy
  171. Electrostatic Headphones
  172. akg k140 earpads
  173. Which design is better for portable linear amplification?
  174. Midgård, compact, low distortion, high quality, Class A Lateral FET headamp
  175. Copper for Headphone Amp Chassis
  176. The DAO SE all-FET Class-A ZGF Headphone Amplifier
  177. What is this?!
  178. Background noise - tube amp
  179. Am the only one who's not deaf....?
  180. Grado GS1000 died
  181. lme49600 buffering the output of a generic soundcard
  182. LMH6643 amplifier
  183. Balanced input headphone amp
  184. Rigs test
  185. Kevin Gilmore KGSSHV boards
  186. Universal Headphone Amp - fits different headphones
  187. Headphone distribution block (passive)
  188. Calculating audio transformer losses?
  189. O2 headphone amp with 4x 8.4V cells
  190. how to mix sound from notebook and external sound card and get headphones output
  191. Koss HV/1LC foam Ear Pads
  192. Any DIY/Upgrade Components Ideas for Bravo Audio V2 12AU7 HeadAmp?
  193. Class A mosfet headphone amplifier. How does it look?
  194. Headphone Connections
  195. Headphones
  196. my new MING DA MC300-EAR headphone. Would like your suggestions.
  197. Best Sounding AMP for IMOD ( Modded ipod ) LOD
  198. Any point in adding a audio transformer for more power?
  199. Convert Low V Aikido line stage to headphone use?
  200. Balder, OPA2134+BUF634 Headphone Amplifier
  201. A good Headphone Amp for AKG K240DF anybody? It's 88dB and 600ohm, Thank you.
  202. Converting an Amp to Balanced XLR
  203. Calculating output impedance of Morgan-Jones headphone amp?
  204. norrisr
  205. modulation-like distortion of music at low volumes
  206. My E5 Class A hifi headphone amp
  207. Midgard, a low distortion Lateral FET output Headphone Amplifier
  208. can someone look this over?
  209. STAX Earspeaker part
  210. noise cancelation
  211. Best headamp for Hifiman planars?
  212. Headphone Passthrough Techniques
  213. I need Amplifier.
  214. Tone Stack with 2 knobs and switches
  215. Another 6922/6AS7 OTL Project
  216. Can anyone help me, repairing my DACPort
  217. Upgrading ICs in headphone amps
  218. Creating headphone jack from speaker out
  219. resistors in cmoy
  220. Electret Mic -> Headphones
  221. akg 240M ear pads
  222. "Balanced" vs single ended headphone drive
  223. Source for these Aluminum headphone cases/chassis?
  224. How do I Improve bass handling in a headphone amp?
  225. Little help please
  226. Objective2 as preamp (Help Needed)
  227. Best Earbud (not earplug) headphones to buy?
  228. help with caps and resisters
  229. A small, low-voltage, battery operated amplifier
  230. O2 Headphone amp gerber files problem
  231. Audez'e LCD-2 - help needed for a DIY cable build
  232. My Objective 2 having weird issues
  233. Beyerdynamic A1 kit
  234. M-stage Op amp replacement (for the better)
  235. First amp build; need help choosing and understanding amps
  236. Want to build Unusual high powered battery powered headphone amp (and equalizer)
  237. Single Stator Electrostatic Headphone - issues?
  238. Just made o2 amps, now what? :)
  239. Pioneer SE-50 worth saving?
  240. Measuring and Correction of Frequency Response for Head-Phones
  241. MiniDSP for headphone EQ & crosstalk?
  242. Impedance balancing of headphones + pot
  243. TPA6120A2 with balanced crossfeed?
  244. NOOB DIY need some help.
  245. Building the O2 Headphone Amp
  246. Diamond buffer headphone amp- can I parallel outputs?
  247. B-Board Boxer Prototype Build Thread
  248. headphone amps vs headphone inputs?
  249. Amp between Xonar D1 and Audio Technica ATH-M50
  250. Quick CMOY Question

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