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  1. Help needed -Electrocompaniet EC4.7 preamp
  2. Improving rejection ratio of subtraction circuit
  3. Delay line for front channel
  4. Wireless analog connection TV -> amp?
  5. Op Amp Rail Splitter Question
  6. Substitution for NEC MuPC812C IC in Nakamichi CA-7A?
  7. Preamp Impedance Question
  8. tone control schematics please
  9. Avoid Potential Groundloop Problems in Headphone Amp
  10. DIY Input isolation filter
  11. Vishay/Dale RN60C or RN55E?
  12. Software for RIAA
  13. RTP3D instructions
  14. Adding an fx send/return to a mixer
  15. lme49710 preamp from china
  16. High gain pre amp noise problems.
  17. New black Jolida JD9 w pics.
  18. Math expression for parametric EQ project
  19. Passive Balanced Volume Control Questions
  20. XLR switcher
  21. Building a Stereo Equalizer
  22. Phase extraction!!!
  23. Is the blue velvet Alps still best price/performance pot?
  24. Preamp Capacitor Questions
  25. Yamaha Promix 01
  26. Q: Converting 5k pot to 20k pot
  27. Anthem D2v Mod
  28. (minimal) speaker level vs. line level high pass filter
  29. Passive Preamp?
  30. Need help troubleshooting PreAmp build
  31. prototype preamplifier
  32. voltage levels for line outs??
  33. Bottlehead Quickie
  34. NJM4580V MSOP in pre for recording?
  35. Attenuator / Pre-amp for Behringer A-500
  36. DIY-unidirectional electrect condenser microphone.
  37. Dahlquist DQ LP1
  38. 5-pin din input connector convert to rca
  39. LDR Based Input Selection
  40. Phantom Power MSOP op-amps
  41. PPS-Caps
  42. Bypassing a receiver's internal amp
  43. Ladder or Series Attenuator for volume?
  44. Active variable Low-Pass Filter 55-110 Hz
  45. Extremely Frustrated!!! Why won't my amp get loud!?!?!
  46. Parametric EQ problems
  47. radford pre Zd22
  48. how test electronic crossover without any instruments?
  49. High freq filtering of a (guitar) preamp?
  50. Floating Differential Signal
  51. 8-channel stereo line level switch
  52. Pre Amp/ line Problems... Help :/
  53. cd preamp for jlh69
  54. Two RCA Outputs into One! HOW TO!?
  55. A.C vs D.C coupling
  56. Passive Crossover for Loudspeakers? HELP!
  57. Passive Crossover for Loudspeakers? HELP!
  58. Inductor wiring for crossover
  59. Place amps next to rca inputs in enclosure?
  60. 3 BAND TONE CONTROL
  61. Signal Path Components
  62. Preamplifier
  63. A Different Opamp Compensation Technique.
  64. Preamp / Passive, for Biamp
  65. Pre-Amp earthing concern
  66. LDR as buffer ?
  67. Passive Line level crossover and input impedance *Help*
  68. Switchable balanced / unbalanced input buffer
  69. VOLUME CONTROL PASIVE !
  70. Dual I/V stage implementation for Buffalo II & III
  71. Problem with passive preamp HELP!!!
  72. JFET follower (Xenover) with MOX like setup?
  73. A excellent Pre-amp
  74. A little problem with Op-Amp
  75. Best volume kit on the market
  76. Best Pre amp Kit on the market
  77. ESP Project 104 muting problem
  78. How many times can you split a line level output?
  79. Can someone help me make a parallel line level buffer/head phone driver circuit
  80. Repair and Restore Phase Linear 4000 series 2
  81. RCA to XLR Converter
  82. audio reserach d100 am1 am2 modules
  83. Need help with Pass B1 Buffer
  84. frequency control of higher order filter with mono pot
  85. Mark Levinson Cables CEMAC
  86. DI Box question
  87. Help me measure line levels
  88. Pre-Amp with tone control
  89. wiring a dual gang pot
  90. Using digital interconnect as analog interconnect
  91. Help with playing analogue through computer, pls...
  92. Help needed with pcb design!
  93. Preamplifier
  94. My pre-amp/DAC/Phono/Headphone build
  95. not balance sound on tube pre-amp
  96. passing audio through unused telephone connection
  97. help designing RC level isolation transformer
  98. Selector switch questions
  99. dual ganged pot
  100. Phono Preamp for Creamic Cartridge
  101. What type of wire for signal in?
  102. Need help with single supply conversion
  103. Shunted pot?
  104. New to this so be gentle: Want to mod a Audio Control EQX
  105. XLR Selector Box
  106. Opamp for Mic preamp
  107. xlr to pc-soundcard
  108. Wiring unbalanced with XLR instead of RCA
  109. Electronic volume control idea
  110. Trying to separate signal and voltage ground: Am I thinking it right?
  111. Trying to separate signal and voltage ground: Am I thinking it right?
  112. High voltage mosfet buffer
  113. unbalanced to balanced conversion
  114. High End Tone Control
  115. DVD/CD Audio Out Control ?
  116. Stepped-Attenuators = Thin Lower-Mids?
  117. ANN: LF01 Discrete/Hybrid Opamp Module
  118. transformer coupled output= dc block?
  119. searching for amplifier distributer with more than 20 db bass mid treble tone control
  120. Does anyone use a MiniDSP 2x8 as a preamplifier?
  121. MARK LEVINSON ML-10
  122. "Reverse" Linkwitz Transform
  123. Active crossover for subwoofer
  124. 2 way crossover build (diy first timer)
  125. The joys of Transformer Volume Control maintenance - 23 pole switch replacement
  126. Current feedback composite amplifiers
  127. Ovation Line Pre-Amp
  128. Amplifier XO simulation in WinISD
  129. Phase inverting / not inverting preamplifier
  130. Help a Newb add preamps to his receiver.
  131. DS1802 and CD4052 mux problems
  132. Preamp kit $150-$300
  133. help modifying my Phono-stage
  134. what are you thoughts on zstage from decware?
  135. Help needed with Paul Hynes VCCS
  136. Diy line mixer
  137. help pls...about crossover watts
  138. Problem with DS1802 digital volume control IC
  139. How much overhead is required
  140. multiple feedback low pass filter question
  141. Pre-amp transistor based for dynamic mic
  142. Basic pre-amp for DMX controller
  143. Recapping Linn Linto
  144. Lightspeed Attenuator needs a buffer??? Try these.
  145. anyone modded their musical fidelity V-LPS?
  146. Low audio frequency cutoff filter
  147. Not thrilled with sound of 4562 in active xovers
  148. Tube preamp diy kit
  149. Can somebody please check over my crossover
  150. No Name Pre
  151. Can I do that subs 12ax7 with 12at7
  152. Notch Filter
  153. Swapping Op-Amps... you have checked to see it's stable haven't you ?
  154. wiring input for 4 ch 41hz amp9b
  155. Q_Dispre
  156. Volume & selector controller with 5x7 dotmatrix display for tube/transistor amplifier
  157. why would +ve regulator output -ve voltage? ?
  158. suhr preamp
  159. DIY mixer first project
  160. what is R and C in series to ground?
  161. E.C Audio Finestra Preamp
  162. converting passive xo to line level passive OR salen key? any advice?
  163. Slow ramp up/fast ramp down 48V phantom power (circuit design)
  164. Mic Preamp Buffer
  165. Rotel RC 970 BX MK II - Service Manual
  166. Help needed for tone control circuit
  167. Descrete jFET versus IC op-amp quality
  168. A New approach of Volume Control: AAVA (Accuphase Analog Vari-gain Amplifier)
  169. 8-way (remote) volume control
  170. Remote Controlled (RC) Volume Control Kits - Overview wanted
  171. what causes a big soundstage (audio research)
  172. Passive low-pass passive for line input - 2nd part
  173. Alpine ERE-G180 and G190 schematics
  174. Riaa capacitor voltage ratings
  175. THAT 1510/1512 op-amps
  176. Quality line attenuator?
  177. Passive low-pass passive for line input
  178. Yamaha C-65
  179. Preamp A - 15 : Mark Levinson No. 20.5 Derived
  180. 12az7a phono stage-12ay7a line stage
  181. Relays for ESP P125 (4-way LR crossover board)
  182. 3 band eq with paramertic
  183. tetra phono stage values
  184. Preamp improvements/suggestions
  185. Cascaded Notch filters
  186. Please help: building a notch filter
  187. Help me replacing a (they dont have that) op ic
  188. Improved LDR Volume Control
  189. Mods Xiang Sheng 728A
  190. Ultra-fine level setting
  191. line volume knob
  192. Behringer CX2310 Toroid wiring
  193. Richard Fordham 5.1 Volume Control
  194. INA217 mic preamp critique and questions
  195. Modular Balanced Preamp
  196. Primare i21 broken, no sound
  197. Jfet Preamp Calculator
  198. Use of ferrite beads / core on screened cables
  199. Tube Nube! Where to start,,
  200. [Help] Vintage preamp worth to buy ?
  201. HI-FI Magazine Pre-amp
  202. Basic attenuator question
  203. Jfet folded cascode with diamond buffer opamp
  204. Impedance matching LoZ source HiZ inputs
  205. Gain stage for SS phono
  206. Measuring platter speed.
  207. Budget "passive preamp"
  208. Sansui SP-220 Tube Preamp
  209. Preamp for Piezo cello bridge
  210. Mixer Section explanation help needed.
  211. What is a good 1st order Good Band pass?
  212. Preamp: Comparing LDR and buffered LDR
  213. BTL to Balanced Conversion
  214. REGA CURSA CIRCUIT
  215. Questios about designing with opamps
  216. Preamp from Velodyne HGS line
  217. Using PGA23XX with dac with dc offset
  218. Instrumentation Amp: Input Resistors?
  219. Mic pre amp Problem
  220. please help me
  221. Output transformer in reverse to drive a piezo disk
  222. add a volume control to a dac with dc offset
  223. How to switch phantom power?
  224. zoe tsang simple opamp preamp/buffer kit on ebay
  225. Impedance of parallel transformers
  226. External tunable X-Over
  227. sound of discrete opamps
  228. Big Dumb Input Selector
  229. DIY Line preamp sugestions, 10meter cables
  230. which tube preamp kit for newbie
  231. EQ Circuit before or after crossover circuit ??
  232. Schematic needed panasonic RX-1230 schematic
  233. Passive 16 channel summing mixer
  234. schematic needed: 3 band equaliser + gain stage
  235. Quick question on pots for guitar pre
  236. Counterpoint SA5 Phono Channel Out... Help!
  237. Help with Op Amp outamp
  238. Discrete dual-opamp DIP08 module (jcx topology)
  239. Preamp disappointment and passive mod???
  240. Need help with volume control
  241. Solid State Pre Amp with Tube Amp - Pointless?
  242. Touch-sense/remote active/passive preamp
  243. Summing Mixer and Headphone amp...
  244. Linkwitz-Riley low pass, strange distortion?
  245. Cauer / Elliptic Filter design program
  246. do I need vintage preamp?
  247. Optical Attenuator on the Cheap
  248. CDP output enough for line-level active crossover?
  249. Replacing Samson S 3-way Xover Op amps
  250. Any Semi Manufacturers Better Than Others?

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