View Full Version : Headphone Systems

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  1. DC servo for Sijosae Buffer
  2. connect two inverting op amps together
  3. Yet Another Cmoy - PCB layout with Eagle and making PCB
  4. How to prevent unwanted volume adjustments on volume knob of a portable amp
  5. Project Ember ?
  6. O2 and power questions...
  7. Beyerdynamic A1 clone gold, opamp rolling
  8. Is there a better way to implement buf634 other than place in a a loop?
  9. An early look at my new HPA design
  10. O2 XLR, St/Mono swtich, etc Mod. ?'s
  11. A question regarding bass boost and output buffers
  12. O2 headamp output booster PCB
  13. cMoybb op amp rolling with AD797BRZ
  14. Millett Hybrid Starving Student (12AU7)
  15. Good capacitors for cmoy
  16. mysterious headphones
  17. New 4 layer LME49610 Headphone Amplifier D1
  18. Simple Headphone's Amp for beginner
  19. upgrading x-can V1? anyone?
  20. Headphone Amps DIY for beginners
  21. some question about headphone amp (possibly the o2)
  22. Unknown Stax Headphones for SRD-7
  23. Moskido Hybrid headphone amplifier! Help needed
  24. Lowest capacitance hum-rejecting 4-wire headphone cable configuration
  25. Best amp possible for the hd-650
  26. Looking for a Headphone Amplifier
  27. Shure Earphones SE846
  28. Headphone equalization hardware and software
  30. pcb layout for grado ra1 ?
  31. grado ra1 clone
  32. Szekeres vs. PRR-SOL amplifier
  33. Optimal grounding
  34. 4 channel stereo mixer
  35. New PC setup.
  36. Class A Heaphone Amp
  37. DIY Headphone Tap + Passive Mixer
  38. Beats by Dr Dre headphones or alternative models/brands?
  39. In line sound limiter for headphones
  40. Adjustable Ear phone volume limiter
  41. MOSFET follower to my phone
  42. Crazy CMOY board
  43. starving student vs jonokuchi or hybrid vs tubes for hd600 and sr80i ?
  44. Tube/SS OTL single tube recommendations
  45. Pseudo Bravo headphone amplifier
  47. Single valve amp
  48. My desktop Objective2 amp
  49. O2 loud turn on transient fix help...
  50. Help wanted to find an old schematic
  51. Dual TPA6120A2 headphone design to eliminate crosstalk
  52. Need an AMP recommendation, and have a couple questions.
  53. Pot value in cmoy
  55. OPA827 + Diamond Buffer
  56. newbie qustion
  57. Advice on USB Soundcard / USB DAC + Amplifier
  58. 6n2 + fu32 vacuum tube tube headphone amplifier
  59. Headphone amp recommendation required?
  60. Tube Headphone amplifier suggestions 2x(1:40) transformers
  61. Different grounding, different sound quality or what can be the problem?
  62. Radio Shack Digital to Analog Converter
  63. 2SC1815 alternative for Mini Zen
  64. Two-Way Headset Wiring
  65. whats worng with this circut
  66. Phono amp top slot board for O2 amplfier in B3 case
  67. Szekeres VE protection diodes?
  68. Headphone Amp Feels 'Electrified'
  69. Design Issue: Cascaded passive filer stages
  70. Headphone amp between source & amplifier - how to passthrough?
  71. Open Source Headphone Amplifier
  72. OPA2132/4 for headphones
  73. O2 LiPo Daughterboard
  74. Class AB with op-amp input, audible noise
  75. PCB check for a simple amp
  76. Home meade design AMP prob's
  77. Noise - how much is too much?
  78. Massively parallel LME49990 headamp
  79. Building the O2 - A novices build experience
  80. A Through-hole "Wire" Amp
  81. Adding a headphone output to CD PLAYER?
  82. Rod Elliot 113 - Headphone amp TOO MUCH GAIN
  83. Dual O2-Inspired, SMD Headphone Amp
  84. Low impedance phones, Please suggest amp design?
  85. Huge change in audio quality simply by changing the pads on headphones?
  86. what next, help please
  87. DIY isodynamic headphones?
  88. DIY replace jack plug: strange colors
  89. Canjam 2013 ?
  90. Can you disable DAC on O2 ODAC?
  91. Can i connect my sony pulse wireless heaset to a TV ?
  92. Audio controlled voltage mod.
  93. AKG K518
  94. Composite amplifier in class A
  95. A great Fostex T50RP amp?
  96. helmet speakers
  97. Ambisonics, and listening to binaural via speakers
  98. Cheap but linear headamp
  99. Thin Durable Flexible Wire to Fix Headphones
  100. If headphones are out-of-phase, can you hear it?
  101. Oatley K272 DC power options.
  102. A curious Inquiry involving internal headphone amp/powering multiple earbuds?
  103. recommend me a valve headphone amp - Beyer T1 & AKG Q701 etc
  104. HP amp out impedance vs. HP impedance
  105. O2 help with bass boost and 1/4 jack mods
  106. Anyone ever used LM4780 for headphones?
  107. Stax Type 1 headphone, anyone know what these are?
  108. DIY balanced headphone amp?
  109. Simple headphone amp from spare parts
  110. SENNHEISER HD800 Source Impedance
  111. TDA1308 - changing gain resistors
  112. Headphone Amp Selection?
  113. Classic v1 headphone amplifier
  114. RFI problems on diy headphone amp.
  115. power flickering on tube cmoy amp
  116. question about a circuit
  117. hello all is a dac worth buying
  118. Passive bell shaped EQ for headphones
  120. HD650 can I fix this?
  121. Headphones Amplifier HIFI
  122. An "O3" - 35% smaller SMD RS O2 headphone amp version
  123. need help with headphones
  124. Moe'stevens O2
  125. Need help - using J A Burgess 45 SE amp for headphones
  126. Akai EIE Pro or Lexicon I-O|22 for AKGQ 701 [Specs inside]
  127. Power switch driver board(Momentary switch) + output relay board(delayed ON/fast OFF)
  128. OpAmps to drive HD650 from AK4399 Vout DAC
  129. Where to place current limit output resistor?
  130. Headphone amp noise. Help!
  131. USB DAC & headphone Amp with 3D Printed Enclosure
  132. DIY amp/DAC with better measurements than O2/ODAC?
  133. Battery powered 4W amp
  134. stuffing cotton balls in headphones?
  135. Measuring headphone FR?
  136. LM1875 based amp by Sijose
  137. A version of an O2 Desktop Amp (ODA)
  138. ESP P113 voltage gain of 1, will it work?
  139. The No Headphone Amp!
  140. Help Needed - Push Pull Transformer replacement
  141. Improving Bass Response On A Popular Hybrid Design
  142. Koss Esp-9 to ESP-9b Conversion... Help needed with grounding scheme
  143. High power headphone amp
  144. New Modular Headphone Amplifier
  145. full range planar headphones using neodynium magnets
  146. JLH Chiarra or Hifisonix Class A buffer?
  147. Sennhesier HD424
  148. 2-channel regular ground, dual mono or "balanced"/bridged?
  149. Jack Plug Wiring Help
  150. New Portable Amplifier Project started
  151. Pimeta V2 or O2?
  152. JLH Class A headphone amp from ETI not WW
  153. Left/Right Channel balancer
  154. Choosing a DC storage/rail cap for cmoy like amp
  155. Feedback resistor size - opamps
  156. Can I add a Potentiometer to these Headphones?
  157. Headphone distribution schematics
  158. Stax upgrade recomendations please.
  159. tube amp designs for low impedance headphones?
  160. headphone buffer/output for usb/dac
  161. Personal EQ & AMP for Hearing loss
  162. Grado RS1 headphones
  163. MOSFET Headphone Amplifier
  164. Lehmann clones
  165. which amplifier kit on ebay?
  166. Koss HV/1LC - specifications
  167. Headphone maximum power
  168. Output device for SE Hybrid Headphone Amp
  169. Output impedance as compensation?
  170. New Headphone Amp kit supplier in OZ
  171. suggestion for a 200$ headamp
  172. Replace Blackbox m10 3-prong jack
  173. Sony MDR-V6 changed?
  174. New portable amplifier
  175. New portable amplifier
  176. Stax SRM-212 repair?
  177. Audiophile Gear vs. ODAC/O2 (DAC’s and Amp’s)
  178. Sennheiser HD650 vs AKG Q701 QJ
  179. Split-supply portable headphone amp / DAC
  180. A47 / Crystal CMoy
  181. Electrostatic Headphones
  182. akg k140 earpads
  183. Which design is better for portable linear amplification?
  184. Midgård, compact, low distortion, high quality, Class A Lateral FET headamp
  185. Copper for Headphone Amp Chassis
  186. The DAO SE all-FET Class-A ZGF Headphone Amplifier
  187. What is this?!
  188. Background noise - tube amp
  189. Am the only one who's not deaf....?
  190. Grado GS1000 died
  191. lme49600 buffering the output of a generic soundcard
  192. LMH6643 amplifier
  193. Balanced input headphone amp
  194. Rigs test
  195. Kevin Gilmore KGSSHV boards
  196. Universal Headphone Amp - fits different headphones
  197. Headphone distribution block (passive)
  198. Calculating audio transformer losses?
  199. O2 headphone amp with 4x 8.4V cells
  200. how to mix sound from notebook and external sound card and get headphones output
  201. Koss HV/1LC foam Ear Pads
  202. Any DIY/Upgrade Components Ideas for Bravo Audio V2 12AU7 HeadAmp?
  203. Class A mosfet headphone amplifier. How does it look?
  204. Headphone Connections
  205. Headphones
  206. my new MING DA MC300-EAR headphone. Would like your suggestions.
  207. Best Sounding AMP for IMOD ( Modded ipod ) LOD
  208. Any point in adding a audio transformer for more power?
  209. Convert Low V Aikido line stage to headphone use?
  210. Balder, OPA2134+BUF634 Headphone Amplifier
  211. A good Headphone Amp for AKG K240DF anybody? It's 88dB and 600ohm, Thank you.
  212. Converting an Amp to Balanced XLR
  213. Calculating output impedance of Morgan-Jones headphone amp?
  214. norrisr
  215. modulation-like distortion of music at low volumes
  216. My E5 Class A hifi headphone amp
  217. Midgard, a low distortion Lateral FET output Headphone Amplifier
  218. can someone look this over?
  219. STAX Earspeaker part
  220. noise cancelation
  221. Best headamp for Hifiman planars?
  222. Headphone Passthrough Techniques
  223. I need Amplifier.
  224. Tone Stack with 2 knobs and switches
  225. Another 6922/6AS7 OTL Project
  226. Can anyone help me, repairing my DACPort
  227. Upgrading ICs in headphone amps
  228. Creating headphone jack from speaker out
  229. resistors in cmoy
  230. Electret Mic -> Headphones
  231. akg 240M ear pads
  232. "Balanced" vs single ended headphone drive
  233. Source for these Aluminum headphone cases/chassis?
  234. How do I Improve bass handling in a headphone amp?
  235. Little help please
  236. Objective2 as preamp (Help Needed)
  237. Best Earbud (not earplug) headphones to buy?
  238. help with caps and resisters
  239. A small, low-voltage, battery operated amplifier
  240. O2 Headphone amp gerber files problem
  241. Audez'e LCD-2 - help needed for a DIY cable build
  242. My Objective 2 having weird issues
  243. Beyerdynamic A1 kit
  244. M-stage Op amp replacement (for the better)
  245. First amp build; need help choosing and understanding amps
  246. Want to build Unusual high powered battery powered headphone amp (and equalizer)
  247. Single Stator Electrostatic Headphone - issues?
  248. Just made o2 amps, now what? :)
  249. Pioneer SE-50 worth saving?
  250. Measuring and Correction of Frequency Response for Head-Phones

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