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  1. Modifying a Class A preamplifier design for more gain
  2. PRO 2 or 3 way 4th order crossover.
  3. Those tiresome RCA/chinch
  4. Simple mic preamp
  5. Power supply dilemma for 8-channel mic pre
  6. NAD 1020 replace potentiometers tones!!
  7. Mic cable as single ended interconnects
  8. Layman's question for the pros
  9. Active volume control with balanced output using 2 op-amps
  10. Great American Sound Thalia 1 Service Info
  11. Too much signal voltage...
  12. Impedance matching - Source / Attenuator / Amp
  13. DIY Sine Wave Oscillator Trouble
  14. What is the maximum gain for 1 op amp stage?
  15. What is the consequence of this wiring scheme? (With tangential "extra trace"?)
  16. preamp relay driver needed
  17. Buffer output for PCM1794A
  18. Lemonstre at linelevel
  19. Large band para eq - optimisations and smd pcb ?
  20. Passive line level crossover, different impedance amps
  21. TI Active volume control board...tipd136
  22. carlos Jfet pre voltage questions
  23. Looking for basic source mixer for home system
  24. Help needed for calaculate cutoff frequency ?
  25. Critique this noninverting opamp buffer/amplifier please? Almost time to build...
  26. the "JB" 3-stage Phono Preamp
  27. Preamp does not mute.
  28. 9 Pin1/4" inputjack for Soho tube Preamp
  29. Great American Sound Thaila 2 Setup Procedure
  30. Need a simple pre-amp, quick!
  31. Adding a (variable) gain boost to this non-inverting opamp buffer circuit?
  32. Klotz IC cables - opinions on specific types
  33. Matching I/O Impedance - How to?
  34. Equalizer and tone control circuit used in Dj mixer
  35. High performance subwoofer filter circuit(low pass) to your audio amp
  36. Unity gain opamp circuit
  37. Looking for a Cheap, simple Opamp gain stage
  38. Phantom Powered Stereo DI
  39. Why so difficult; It's just a switch
  40. Buzzing passive pre-amp
  41. do i need a preamp for a passive mixer?
  42. Wire gauge for amplifier's signal level input.
  43. CD Line out - PC sound
  44. Phono pre with Jfet and then ad815 at the second stage..
  45. Replacement for Monacor's RCA Connector T-724G wanted
  46. synare clone kit
  47. Full-Analog Arduino(or embedded)-CTRL 2wayCrossover
  48. Line Level Transformer Impedance
  49. Need help with schematics
  50. Luminous Axiom Passive Pre with 2 Outputs - Dumb Question
  51. how to remote control a rotary switch
  52. NE5532 preamp questions
  53. Using O2 as preamp
  54. 0.005% Distortion Tone Control Preamp, NJW1119A Chipset
  55. Low pass filter for subwoofer.
  56. Getting 10-15 dB gain from an opamp buffer circuit?
  57. Simple Volume Knob&Limiter?
  58. Phono card as standalone unit
  59. Passive Preamp schematic for multiple inputs and 2 outputs - help?
  60. 3-way input audio input switching board (ebay)
  61. mixer line in gain control
  62. Single ended Baxandall control - offset on pots
  63. HK825 replace Balance Pot
  64. Simple attenuation needed
  65. Looking for circuit improvement advice(Precision Fidelity C8)
  66. pre-amp with 2 stages adjustable gain
  67. portable discrete mic preamp
  68. Preventing source selector 'thump' using transformer?
  69. Bass loss after static shock - HELP
  70. R-2R attenuator PCB layout question
  71. Using 2SK170/J74BL in Ebay JC-2 "Clone"
  72. Is this signal path correct?
  73. Op amp band pass filter connection problems
  74. lpf calculator
  75. impedance matching question
  76. Custom 6H30 linestage
  77. DIY microphone preamp for Monacor MCE-404U capsule
  78. AD815 or THS6012 pros and cons
  79. What is the impedance out of a voltage divider?
  80. Phono Preamp Question...
  81. Analogue Parametric EQ - Calrec Polar...
  82. Sony pcm 7010 - XLR to RCA input
  83. TDA1524A preamp
  84. Wishlist: Op Amp Characterization Curves in Datasheets
  85. Parametric Mid EQ Pot Wiring
  86. Need PS Audio PS IV schematic
  87. Adding Balanced Outputs Psuedo or Real?
  88. Sending an A/V multi channel pre out into another A/V line in?
  89. Copper purity of Cat-5e cable ?
  90. Balance control?
  91. Input/output transformer question
  92. Equalizing the midrange out of a small Radio Shack driver
  93. what ohmage potentiometer for line out volume control?
  94. preamp signal powered down amp
  95. Passive Balanced Attenuator (between Pre & Power)
  96. Best way to add stereo subwoofer pre-outs to existing DAC/preamp?
  97. iPhone Line Out to Car Amp
  98. Is LR4 phase shift audible
  99. line preamp /buffer /module
  100. Please evaluate this RIAA schematic (njm4580)
  101. Praamp crackling
  102. Buffer Jfet
  103. Onkyo SC-901 crossover rebuild(upgrade)
  104. Art Tube MP Help!
  105. How is the sound of the Radford ZD22 preamp compared to modern high-end preamps ?
  106. from stereo to mono (subwoofer) passive adder ?
  107. Newbie Question: Troubleshooting Simple Line Mixer
  108. About preamp circuits improvements
  109. Noob Question: Electros in signal path
  110. Passive or feedback RIAA network tube phono pre?
  111. THAT1606 based line buffer for balanced guitar - Vero design okay?
  112. Attenuating line level signal with buffer vs. resistor...
  113. New Guy Needs Help With Optimus 31-2025 Graphic Equalizer
  114. Preamp: opamp low pass filter for PS noise
  115. I could use some help on a PS Audio Preamp
  116. another opamp based preamp
  117. Comment on Grounding Scheme?
  118. Radio Shack experimenter kits
  119. Crossover for Scan Speak 6000 tweeter.
  120. Neutrik nte 10/3 help
  121. RCA to XLR
  122. BBE XR-5383 chip
  123. Balanced level preamp
  124. cinemag CMLI-15/15B, unbal--> bal
  125. Pin 1: Multiple XLRs between two amplifiers
  126. Connecting Mp3 player
  127. DIY Tone + Volume control
  128. volume control
  129. Linkwitz-Riley Electronic Crossover PCB
  130. Balanced Microphone Preamp
  131. How Much Voltage Do I Need For a Standard Headphone
  132. Yet another passive volume control
  133. Distortion and Source Impedance in JFET Input Op Amps
  134. Analog switches
  135. Yuan Jing 6n3 tube preamp power requirements and options
  136. PGA2310 frequency response
  137. Smoking Preamplifier
  138. Carver C1 preamp
  139. Meridian 201 help
  140. Active speaker- adding amp/xo
  141. basic power supply questions
  142. McIntosh C26 hum after recaping
  143. Old Volvo Tape Deck Line Level to Tape Head
  144. I Need A New Audio Input Indicator
  145. Handy Non Inverting Active Volume Control
  146. Active volume control - Be quiet please.
  147. Complementary MOS Preamp
  148. BUFFER /LINE STAGE/ BEST POSSIBLE SPEC and SOUND
  149. Simple Symmetrical Preamplifier
  150. EMT-240, EMT 262
  151. Looking for that person who can analyze and upgrade.
  152. TKD stereo attenuator 10k
  153. Douglas self four-band baxandall eq
  154. Input Noise Cancelation - LME 49990 - LT1028
  155. Baxandall Variations
  156. HELP! Electret mic - Powering from Focusrite mic preamp with 48v
  157. Output Transformer for INA217 Mic Preamp?
  158. Advise please on EQ restore...
  159. Recommendations for pre/mixer/thing boards or etc.?
  160. Daisy chain components
  161. Unidirectional Electert Mic and Preamp help.
  162. Rotary stepped attenuator (series) instructions?
  163. High Quality Splitters and Mixers
  164. Which transformations inside this Django?
  165. Balanced stepped attenuator with constant input impedance
  166. 4-ch unbalanced as stereo balanced?
  167. zobel network at driver Fs?
  168. another relay input/volume controller
  169. Basic Inverting Opamp HUM
  170. Recommendations for a simple, opamp-based low-gain stage?
  171. Art Project needs advise, wall of boomboxes
  172. Attenuator design for a modular synth?
  173. Pot values for tone control - from 25k to 10k
  174. Needing Stereo to Mono Summing help...
  175. 2.1 preamp
  176. A little advice, re capping
  177. 8 ohm volume pot
  178. Naim NAC 32.5 Gain board lower gain
  179. P7 Mini Preamp Possible Improvements
  180. Hum issue in hpf circuit
  181. CS3318 Volume Control board with IR?
  182. Balanced line behaviour on Mixer's output
  183. Akitika PR101 Preamp by Dan Joffe
  184. Which one of these wiring schemes will have lower noise?
  185. Need help identifying preamp internals. Conrad Johnson PV-1?
  186. New edition D. Self Small Signal Audio Design
  187. Subwoofer preamplifier with low frequency boost below 30Hz?
  188. Spectrum analyser using LM3915
  189. 9V opamp suggestions
  190. Circlotron LINE and RIAA Pre-Amplifiers wanted
  191. JFET choice for transformer coupled mic preamp
  192. understanding source+return current flow on PCBs
  193. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  194. can use la3161 as a simple solution in a car ?
  195. crossover commission/kit
  196. Switch both sides of input connections?
  197. Hammond 140QEX
  198. Current Amplifyer
  199. An Old Nikko power-supply section question
  200. THAT 202XT VCA + ?
  201. Need analog guru help on grounding
  202. iRig Pre Component Upgrade
  203. Calculating a TVC
  204. Balanced Microphone Preamplifier
  205. Electret Condenser Microphone preamp analysis
  206. LF Line Level Stage design to preceed class D amplifier
  207. Mic Preamp w transformer input: changing impedance
  208. Line level / unity gain vacuum tube circuits
  209. Interpret stereophile measurement data
  210. Diy passive pre and switch
  211. slow audio increase at turn on?
  212. Hammond Amplifier Modification Issue
  213. Would like some help with a "Crossover Isolator"
  214. Correct way to split line level inside dual headphone amp
  215. How can this work?
  216. Balanced input
  217. crossover / summer for "2.1" active or passive
  218. Need Advice for Bi-amping
  219. Too much DC at buffer's output
  220. passive pre-amp ?
  221. Salvaged Phono Preamp - Begginner Help
  222. Tape head amplification circuit
  223. Laptop to Guitar Amp cable. . . Resistor values?
  224. Hifi from german studio modules - help wanted
  225. Guard rings for op amps
  226. Tone control for Low bass selector and boost circuit
  227. "Lehmann" Buffer Output Transistors.
  228. Minuature Low Pass Filter
  229. Easy High-Pass Filter
  230. Analog signal control
  231. Buffer Stage
  232. Critique my first drawing / possible build [Active DI]
  233. Low pass filter for Bitstream DAC.
  234. Looking for 0-10V Analog Volume Control Circuit
  235. AVC
  236. looking for programmable eq chip / pcba module ??
  237. Another Modified PGA2311 kit with Arduino for volume control and input selection
  238. Kudies to/for the Tortuga Audio LDR3X.V2
  239. Parasound P/HP 850
  240. LECUA 1000 attenuator from Luxman ?
  241. Line Level Output to Guitar Amplifier Input
  242. is there an off the shelf preamp module that works with the apple remote?
  243. How about this sub crossover filter?
  244. help with 2 pole low pass filter/attenuator
  245. Zobel at the srpp input
  246. Preamp noise after PSU update
  247. Low level interconnect (RCA) measurements
  248. what are the blocks generally found in a pre-amp board?
  249. Carver ct-3 preamp
  250. Advice on a preamp/external volume control for use with active monitors

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