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  1. R-2R attenuator PCB layout question
  2. Using 2SK170/J74BL in Ebay JC-2 "Clone"
  3. Is this signal path correct?
  4. Op amp band pass filter connection problems
  5. lpf calculator
  6. impedance matching question
  7. Custom 6H30 linestage
  8. DIY microphone preamp for Monacor MCE-404U capsule
  9. AD815 or THS6012 pros and cons
  10. What is the impedance out of a voltage divider?
  11. Phono Preamp Question...
  12. Analogue Parametric EQ - Calrec Polar...
  13. Sony pcm 7010 - XLR to RCA input
  14. TDA1524A preamp
  15. Wishlist: Op Amp Characterization Curves in Datasheets
  16. Parametric Mid EQ Pot Wiring
  17. Need PS Audio PS IV schematic
  18. Adding Balanced Outputs Psuedo or Real?
  19. Sending an A/V multi channel pre out into another A/V line in?
  20. Copper purity of Cat-5e cable ?
  21. Balance control?
  22. Input/output transformer question
  23. Equalizing the midrange out of a small Radio Shack driver
  24. what ohmage potentiometer for line out volume control?
  25. preamp signal powered down amp
  26. Passive Balanced Attenuator (between Pre & Power)
  27. Best way to add stereo subwoofer pre-outs to existing DAC/preamp?
  28. iPhone Line Out to Car Amp
  29. Is LR4 phase shift audible
  30. line preamp /buffer /module
  31. Please evaluate this RIAA schematic (njm4580)
  32. Praamp crackling
  33. Buffer Jfet
  34. Onkyo SC-901 crossover rebuild(upgrade)
  35. Art Tube MP Help!
  36. How is the sound of the Radford ZD22 preamp compared to modern high-end preamps ?
  37. from stereo to mono (subwoofer) passive adder ?
  38. Newbie Question: Troubleshooting Simple Line Mixer
  39. About preamp circuits improvements
  40. Noob Question: Electros in signal path
  41. Passive or feedback RIAA network tube phono pre?
  42. THAT1606 based line buffer for balanced guitar - Vero design okay?
  43. Attenuating line level signal with buffer vs. resistor...
  44. New Guy Needs Help With Optimus 31-2025 Graphic Equalizer
  45. Preamp: opamp low pass filter for PS noise
  46. I could use some help on a PS Audio Preamp
  47. another opamp based preamp
  48. Comment on Grounding Scheme?
  49. Radio Shack experimenter kits
  50. Crossover for Scan Speak 6000 tweeter.
  51. Neutrik nte 10/3 help
  52. RCA to XLR
  53. BBE XR-5383 chip
  54. Balanced level preamp
  55. cinemag CMLI-15/15B, unbal--> bal
  56. Pin 1: Multiple XLRs between two amplifiers
  57. Connecting Mp3 player
  58. DIY Tone + Volume control
  59. volume control
  60. Linkwitz-Riley Electronic Crossover PCB
  61. Balanced Microphone Preamp
  62. How Much Voltage Do I Need For a Standard Headphone
  63. Yet another passive volume control
  64. Distortion and Source Impedance in JFET Input Op Amps
  65. Analog switches
  66. Yuan Jing 6n3 tube preamp power requirements and options
  67. PGA2310 frequency response
  68. Smoking Preamplifier
  69. Carver C1 preamp
  70. Meridian 201 help
  71. Active speaker- adding amp/xo
  72. basic power supply questions
  73. McIntosh C26 hum after recaping
  74. Old Volvo Tape Deck Line Level to Tape Head
  75. I Need A New Audio Input Indicator
  76. Handy Non Inverting Active Volume Control
  77. Active volume control - Be quiet please.
  78. Complementary MOS Preamp
  79. BUFFER /LINE STAGE/ BEST POSSIBLE SPEC and SOUND
  80. Simple Symmetrical Preamplifier
  81. EMT-240, EMT 262
  82. Looking for that person who can analyze and upgrade.
  83. TKD stereo attenuator 10k
  84. Douglas self four-band baxandall eq
  85. Input Noise Cancelation - LME 49990 - LT1028
  86. Baxandall Variations
  87. HELP! Electret mic - Powering from Focusrite mic preamp with 48v
  88. Output Transformer for INA217 Mic Preamp?
  89. Advise please on EQ restore...
  90. Recommendations for pre/mixer/thing boards or etc.?
  91. Daisy chain components
  92. Unidirectional Electert Mic and Preamp help.
  93. Rotary stepped attenuator (series) instructions?
  94. High Quality Splitters and Mixers
  95. Which transformations inside this Django?
  96. Balanced stepped attenuator with constant input impedance
  97. 4-ch unbalanced as stereo balanced?
  98. zobel network at driver Fs?
  99. another relay input/volume controller
  100. Basic Inverting Opamp HUM
  101. Recommendations for a simple, opamp-based low-gain stage?
  102. Art Project needs advise, wall of boomboxes
  103. Attenuator design for a modular synth?
  104. Pot values for tone control - from 25k to 10k
  105. Needing Stereo to Mono Summing help...
  106. 2.1 preamp
  107. A little advice, re capping
  108. 8 ohm volume pot
  109. Naim NAC 32.5 Gain board lower gain
  110. P7 Mini Preamp Possible Improvements
  111. Hum issue in hpf circuit
  112. CS3318 Volume Control board with IR?
  113. Balanced line behaviour on Mixer's output
  114. Akitika PR101 Preamp by Dan Joffe
  115. Which one of these wiring schemes will have lower noise?
  116. Need help identifying preamp internals. Conrad Johnson PV-1?
  117. New edition D. Self Small Signal Audio Design
  118. Subwoofer preamplifier with low frequency boost below 30Hz?
  119. Spectrum analyser using LM3915
  120. 9V opamp suggestions
  121. Circlotron LINE and RIAA Pre-Amplifiers wanted
  122. JFET choice for transformer coupled mic preamp
  123. understanding source+return current flow on PCBs
  124. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  125. can use la3161 as a simple solution in a car ?
  126. crossover commission/kit
  127. Switch both sides of input connections?
  128. Hammond 140QEX
  129. Current Amplifyer
  130. An Old Nikko power-supply section question
  131. THAT 202XT VCA + ?
  132. Need analog guru help on grounding
  133. iRig Pre Component Upgrade
  134. Calculating a TVC
  135. Balanced Microphone Preamplifier
  136. Electret Condenser Microphone preamp analysis
  137. LF Line Level Stage design to preceed class D amplifier
  138. Mic Preamp w transformer input: changing impedance
  139. Line level / unity gain vacuum tube circuits
  140. Interpret stereophile measurement data
  141. Diy passive pre and switch
  142. slow audio increase at turn on?
  143. Hammond Amplifier Modification Issue
  144. Would like some help with a "Crossover Isolator"
  145. Correct way to split line level inside dual headphone amp
  146. How can this work?
  147. Balanced input
  148. crossover / summer for "2.1" active or passive
  149. Need Advice for Bi-amping
  150. Too much DC at buffer's output
  151. passive pre-amp ?
  152. Salvaged Phono Preamp - Begginner Help
  153. Tape head amplification circuit
  154. Laptop to Guitar Amp cable. . . Resistor values?
  155. Hifi from german studio modules - help wanted
  156. Guard rings for op amps
  157. Tone control for Low bass selector and boost circuit
  158. "Lehmann" Buffer Output Transistors.
  159. Minuature Low Pass Filter
  160. Easy High-Pass Filter
  161. Analog signal control
  162. Buffer Stage
  163. Critique my first drawing / possible build [Active DI]
  164. Low pass filter for Bitstream DAC.
  165. Looking for 0-10V Analog Volume Control Circuit
  166. AVC
  167. looking for programmable eq chip / pcba module ??
  168. Another Modified PGA2311 kit with Arduino for volume control and input selection
  169. Kudies to/for the Tortuga Audio LDR3X.V2
  170. Parasound P/HP 850
  171. LECUA 1000 attenuator from Luxman ?
  172. Line Level Output to Guitar Amplifier Input
  173. is there an off the shelf preamp module that works with the apple remote?
  174. How about this sub crossover filter?
  175. help with 2 pole low pass filter/attenuator
  176. Zobel at the srpp input
  177. Preamp noise after PSU update
  178. Low level interconnect (RCA) measurements
  179. what are the blocks generally found in a pre-amp board?
  180. Carver ct-3 preamp
  181. Advice on a preamp/external volume control for use with active monitors
  182. Audiophile quality preamp
  183. Building a Line Level Mixer, Transformer advice needed
  184. Sowter type 3232
  185. Super tone controls-I need PCB
  186. L-pad attenuator on preamp output
  187. DI output protection from phantom power
  188. Getting Started on Preamp Design
  189. Balanced to unbalanced.
  190. Input device protection
  191. WTB LDR volume control PCB ?
  192. Adding Input Gain +/-
  193. Room correction using a modified Linkwitz Transform Circuit
  194. How to change active xover frecuencies
  195. non inverting opamp with gain
  196. Digital volume control for 7.1 preamp
  197. Current options for a budget active LLXO?
  198. low impedance high-pass filter
  199. AKG Perception 100 mic repair
  200. How do I configure a simple logic control
  201. PCB, Tone Control with Transistors and dual supply
  202. very very simple DJ mixer aka summing amp?
  203. Passive low pass filter for subwoofer
  204. Linn Exotik/S non DA version lock up problem
  205. Shine7 12au7 preamp builds?
  206. non-DSP delay - is it possible?
  207. Stevens & Billington TX102 Passive preamp Built
  208. Loading considerations in Filter design
  209. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  210. Diodes instead of input selector (insane newbie question)?
  211. Experience with anti-parallel electrolytic capacitors?
  212. Best wire for passive pre?
  213. Which Op Amp Supply Bypass Technique for Low Noise?
  214. Add MONO/DIM to DAC/Preamp
  215. Crackling from input cable (even when there is no input)
  216. Best sounding signal level relay?
  217. Mic preamp around transformer
  218. Questions on op amp settling time and quiescent current.
  219. question on crossover board layout
  220. Bugle 2 problem
  221. Rca Passive Summing Box
  222. RC Chain in a 3 Band Baxandall EQ Circuit?
  223. Parallel transformer output
  224. Modding Marantz PM-15S1
  225. Sony TA4300F Crossover
  226. Upgrading a commercial phono stage
  227. New Bonsai Preamp
  228. Help with line input switch
  229. Remember the thermal noise....
  230. Help with passive attenuator for headphone amp
  231. Do amp inputs interact with each other?
  232. 6n11 preamp hum
  233. need help with boombox pre-amp/tone control design
  234. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  235. low pass filter for DAC output
  236. Driving headphone from speaker output - filtering layout
  237. Highpass mic filter
  238. suitable power supply for dozen opamps?
  239. Little sub preamp/phase circuit
  240. RCA Mixer/Combiner
  241. Offset Problem with Borbely JFET-Buffers
  242. op amp class a bias
  243. Effects of Opamp Loading?
  244. Alps RK27 Motorized Pot - Teardown
  245. TDA7439 tone control IC any good?
  246. 100HZ PLLXO
  247. Bourns PTD90 Series Potentiometer
  248. lowest load for line level equipment to not harm the output stage?
  249. Most important opamp?
  250. 5.1 decode in preamp?

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