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  1. mixer circuits (looking for simple, but very high quality)...
  2. Subwoofer circuit: Going from speaker level to line level
  3. Adding Phantom Power to old board?
  4. Designing a versatile pre with balanced and unbalanced in/out
  5. Help Pls - Coupling Capacitor
  6. How to pick a good audio transistor?
  7. Volume control question
  8. Loudness stage
  9. Electret microphone Pre-amp
  10. Gold pin tube : does it really matters ?
  11. Mic preamp and high/low impedance technical question
  12. Studiomaster 16 x 4 Console
  13. Portable EQ? - Battery Power & SMALL
  14. DIY Tube Equalizer
  15. Using INA217 for Microphone Pre-amp
  16. Here's my DIY passive attenuator / pre / integrated DAC
  17. Basic questions on passive line-level XOs and with bi-amping
  18. Perreaux SM2 Custom
  19. Luxman A522 tonearm?
  20. passive switcher/splitter for monitor controller
  21. XO Components
  22. balanced to unbalanced convertor
  23. CD vs LP
  24. Stan Curtis site
  25. Counterpoint 5.1 Issue
  26. Ebay preamp FET
  27. Some help with high end input selector.
  28. Crossover help!!
  29. Help With Crossover 3-Way Seas 9.1 Home Theater
  30. Simple, good quality equalizer?
  31. Passive Balanced switching and Relay questions!!
  32. Preout mod
  33. remote control unit
  34. Schematic For Vendetta Xover
  35. One of best sounded Line Pre-/RIAA Head Amp from PureAudio-who have heard ?
  36. LDR att. L+R imbalance?
  37. Schematics needed for 3V 1KHz Sine wave generator
  38. is this a balanced input preamp? help m please?
  39. Copland CTA305 schematic
  40. just got a B&K CS-117, lets take a look inside...
  41. Diamond buffer kits any good for preamp?
  42. Analog Multichannel like ProLogic and ProLogic 2 (II) which professional Models
  43. JC-80 eBay PCBs
  44. Connecting many audio output devices to one input device
  45. BBE FJB-200X
  46. Help needed -Electrocompaniet EC4.7 preamp
  47. Improving rejection ratio of subtraction circuit
  48. Delay line for front channel
  49. Wireless analog connection TV -> amp?
  50. Op Amp Rail Splitter Question
  51. Substitution for NEC MuPC812C IC in Nakamichi CA-7A?
  52. Preamp Impedance Question
  53. tone control schematics please
  54. Avoid Potential Groundloop Problems in Headphone Amp
  55. DIY Input isolation filter
  56. Vishay/Dale RN60C or RN55E?
  57. Software for RIAA
  58. RTP3D instructions
  59. Adding an fx send/return to a mixer
  60. lme49710 preamp from china
  61. High gain pre amp noise problems.
  62. New black Jolida JD9 w pics.
  63. Math expression for parametric EQ project
  64. Passive Balanced Volume Control Questions
  65. XLR switcher
  66. Building a Stereo Equalizer
  67. Phase extraction!!!
  68. Is the blue velvet Alps still best price/performance pot?
  69. Preamp Capacitor Questions
  70. Yamaha Promix 01
  71. Q: Converting 5k pot to 20k pot
  72. Anthem D2v Mod
  73. (minimal) speaker level vs. line level high pass filter
  74. Passive Preamp?
  75. Need help troubleshooting PreAmp build
  76. prototype preamplifier
  77. voltage levels for line outs??
  78. Bottlehead Quickie
  79. NJM4580V MSOP in pre for recording?
  80. Attenuator / Pre-amp for Behringer A-500
  81. DIY-unidirectional electrect condenser microphone.
  82. Dahlquist DQ LP1
  83. 5-pin din input connector convert to rca
  84. LDR Based Input Selection
  85. Phantom Power MSOP op-amps
  86. PPS-Caps
  87. Bypassing a receiver's internal amp
  88. Ladder or Series Attenuator for volume?
  89. Active variable Low-Pass Filter 55-110 Hz
  90. Extremely Frustrated!!! Why won't my amp get loud!?!?!
  91. Parametric EQ problems
  92. radford pre Zd22
  93. how test electronic crossover without any instruments?
  94. High freq filtering of a (guitar) preamp?
  95. Floating Differential Signal
  96. 8-channel stereo line level switch
  97. Pre Amp/ line Problems... Help :/
  98. cd preamp for jlh69
  99. Two RCA Outputs into One! HOW TO!?
  100. A.C vs D.C coupling
  101. Passive Crossover for Loudspeakers? HELP!
  102. Passive Crossover for Loudspeakers? HELP!
  103. Inductor wiring for crossover
  104. Place amps next to rca inputs in enclosure?
  105. 3 BAND TONE CONTROL
  106. Signal Path Components
  107. Preamplifier
  108. A Different Opamp Compensation Technique.
  109. Preamp / Passive, for Biamp
  110. Pre-Amp earthing concern
  111. LDR as buffer ?
  112. Passive Line level crossover and input impedance *Help*
  113. Switchable balanced / unbalanced input buffer
  114. VOLUME CONTROL PASIVE !
  115. Dual I/V stage implementation for Buffalo II & III
  116. Problem with passive preamp HELP!!!
  117. JFET follower (Xenover) with MOX like setup?
  118. A excellent Pre-amp
  119. A little problem with Op-Amp
  120. Best volume kit on the market
  121. Best Pre amp Kit on the market
  122. ESP Project 104 muting problem
  123. How many times can you split a line level output?
  124. Can someone help me make a parallel line level buffer/head phone driver circuit
  125. Repair and Restore Phase Linear 4000 series 2
  126. RCA to XLR Converter
  127. audio reserach d100 am1 am2 modules
  128. Need help with Pass B1 Buffer
  129. frequency control of higher order filter with mono pot
  130. Mark Levinson Cables CEMAC
  131. DI Box question
  132. Help me measure line levels
  133. Pre-Amp with tone control
  134. wiring a dual gang pot
  135. Using digital interconnect as analog interconnect
  136. Help with playing analogue through computer, pls...
  137. Help needed with pcb design!
  138. Preamplifier
  139. My pre-amp/DAC/Phono/Headphone build
  140. not balance sound on tube pre-amp
  141. passing audio through unused telephone connection
  142. help designing RC level isolation transformer
  143. Selector switch questions
  144. dual ganged pot
  145. Phono Preamp for Creamic Cartridge
  146. What type of wire for signal in?
  147. Need help with single supply conversion
  148. Shunted pot?
  149. New to this so be gentle: Want to mod a Audio Control EQX
  150. XLR Selector Box
  151. Opamp for Mic preamp
  152. xlr to pc-soundcard
  153. Wiring unbalanced with XLR instead of RCA
  154. Electronic volume control idea
  155. Trying to separate signal and voltage ground: Am I thinking it right?
  156. Trying to separate signal and voltage ground: Am I thinking it right?
  157. High voltage mosfet buffer
  158. unbalanced to balanced conversion
  159. High End Tone Control
  160. DVD/CD Audio Out Control ?
  161. Stepped-Attenuators = Thin Lower-Mids?
  162. ANN: LF01 Discrete/Hybrid Opamp Module
  163. transformer coupled output= dc block?
  164. searching for amplifier distributer with more than 20 db bass mid treble tone control
  165. Does anyone use a MiniDSP 2x8 as a preamplifier?
  166. MARK LEVINSON ML-10
  167. "Reverse" Linkwitz Transform
  168. Active crossover for subwoofer
  169. 2 way crossover build (diy first timer)
  170. The joys of Transformer Volume Control maintenance - 23 pole switch replacement
  171. Current feedback composite amplifiers
  172. Ovation Line Pre-Amp
  173. Amplifier XO simulation in WinISD
  174. Phase inverting / not inverting preamplifier
  175. Help a Newb add preamps to his receiver.
  176. DS1802 and CD4052 mux problems
  177. Preamp kit $150-$300
  178. help modifying my Phono-stage
  179. what are you thoughts on zstage from decware?
  180. Help needed with Paul Hynes VCCS
  181. Diy line mixer
  182. help pls...about crossover watts
  183. Problem with DS1802 digital volume control IC
  184. How much overhead is required
  185. multiple feedback low pass filter question
  186. Pre-amp transistor based for dynamic mic
  187. Basic pre-amp for DMX controller
  188. Recapping Linn Linto
  189. Lightspeed Attenuator needs a buffer??? Try these.
  190. anyone modded their musical fidelity V-LPS?
  191. Low audio frequency cutoff filter
  192. Not thrilled with sound of 4562 in active xovers
  193. Tube preamp diy kit
  194. Can somebody please check over my crossover
  195. No Name Pre
  196. Can I do that subs 12ax7 with 12at7
  197. Notch Filter
  198. Swapping Op-Amps... you have checked to see it's stable haven't you ?
  199. wiring input for 4 ch 41hz amp9b
  200. Q_Dispre
  201. Volume & selector controller with 5x7 dotmatrix display for tube/transistor amplifier
  202. why would +ve regulator output -ve voltage? ?
  203. suhr preamp
  204. DIY mixer first project
  205. what is R and C in series to ground?
  206. E.C Audio Finestra Preamp
  207. converting passive xo to line level passive OR salen key? any advice?
  208. Slow ramp up/fast ramp down 48V phantom power (circuit design)
  209. Mic Preamp Buffer
  210. Rotel RC 970 BX MK II - Service Manual
  211. Help needed for tone control circuit
  212. Descrete jFET versus IC op-amp quality
  213. A New approach of Volume Control: AAVA (Accuphase Analog Vari-gain Amplifier)
  214. 8-way (remote) volume control
  215. Remote Controlled (RC) Volume Control Kits - Overview wanted
  216. what causes a big soundstage (audio research)
  217. Passive low-pass passive for line input - 2nd part
  218. Alpine ERE-G180 and G190 schematics
  219. Riaa capacitor voltage ratings
  220. THAT 1510/1512 op-amps
  221. Quality line attenuator?
  222. Passive low-pass passive for line input
  223. Yamaha C-65
  224. Preamp A - 15 : Mark Levinson No. 20.5 Derived
  225. 12az7a phono stage-12ay7a line stage
  226. Relays for ESP P125 (4-way LR crossover board)
  227. 3 band eq with paramertic
  228. tetra phono stage values
  229. Preamp improvements/suggestions
  230. Cascaded Notch filters
  231. Please help: building a notch filter
  232. Help me replacing a (they dont have that) op ic
  233. Improved LDR Volume Control
  234. Mods Xiang Sheng 728A
  235. Ultra-fine level setting
  236. line volume knob
  237. Behringer CX2310 Toroid wiring
  238. Richard Fordham 5.1 Volume Control
  239. INA217 mic preamp critique and questions
  240. Modular Balanced Preamp
  241. Primare i21 broken, no sound
  242. Jfet Preamp Calculator
  243. Use of ferrite beads / core on screened cables
  244. Tube Nube! Where to start,,
  245. [Help] Vintage preamp worth to buy ?
  246. HI-FI Magazine Pre-amp
  247. Basic attenuator question
  248. Jfet folded cascode with diamond buffer opamp
  249. Impedance matching LoZ source HiZ inputs
  250. Gain stage for SS phono

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