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  1. Large band para eq - optimisations and smd pcb ?
  2. Passive line level crossover, different impedance amps
  3. TI Active volume control board...tipd136
  4. carlos Jfet pre voltage questions
  5. Looking for basic source mixer for home system
  6. Help needed for calaculate cutoff frequency ?
  7. Critique this noninverting opamp buffer/amplifier please? Almost time to build...
  8. the "JB" 3-stage Phono Preamp
  9. Preamp does not mute.
  10. 9 Pin1/4" inputjack for Soho tube Preamp
  11. Great American Sound Thaila 2 Setup Procedure
  12. Need a simple pre-amp, quick!
  13. Adding a (variable) gain boost to this non-inverting opamp buffer circuit?
  14. Klotz IC cables - opinions on specific types
  15. Matching I/O Impedance - How to?
  16. Equalizer and tone control circuit used in Dj mixer
  17. High performance subwoofer filter circuit(low pass) to your audio amp
  18. Unity gain opamp circuit
  19. Looking for a Cheap, simple Opamp gain stage
  20. Phantom Powered Stereo DI
  21. Why so difficult; It's just a switch
  22. Buzzing passive pre-amp
  23. do i need a preamp for a passive mixer?
  24. Wire gauge for amplifier's signal level input.
  25. CD Line out - PC sound
  26. Phono pre with Jfet and then ad815 at the second stage..
  27. Replacement for Monacor's RCA Connector T-724G wanted
  28. synare clone kit
  29. Full-Analog Arduino(or embedded)-CTRL 2wayCrossover
  30. Line Level Transformer Impedance
  31. Need help with schematics
  32. Luminous Axiom Passive Pre with 2 Outputs - Dumb Question
  33. how to remote control a rotary switch
  34. NE5532 preamp questions
  35. Using O2 as preamp
  36. 0.005% Distortion Tone Control Preamp, NJW1119A Chipset
  37. Low pass filter for subwoofer.
  38. Getting 10-15 dB gain from an opamp buffer circuit?
  39. Simple Volume Knob&Limiter?
  40. Phono card as standalone unit
  41. Passive Preamp schematic for multiple inputs and 2 outputs - help?
  42. 3-way input audio input switching board (ebay)
  43. mixer line in gain control
  44. Single ended Baxandall control - offset on pots
  45. HK825 replace Balance Pot
  46. Simple attenuation needed
  47. Looking for circuit improvement advice(Precision Fidelity C8)
  48. pre-amp with 2 stages adjustable gain
  49. portable discrete mic preamp
  50. Preventing source selector 'thump' using transformer?
  51. Bass loss after static shock - HELP
  52. First post
  53. R-2R attenuator PCB layout question
  54. Using 2SK170/J74BL in Ebay JC-2 "Clone"
  55. Is this signal path correct?
  56. Op amp band pass filter connection problems
  57. lpf calculator
  58. impedance matching question
  59. Custom 6H30 linestage
  60. DIY microphone preamp for Monacor MCE-404U capsule
  61. AD815 or THS6012 pros and cons
  62. What is the impedance out of a voltage divider?
  63. Phono Preamp Question...
  64. Sony pcm 7010 - XLR to RCA input
  65. TDA1524A preamp
  66. Wishlist: Op Amp Characterization Curves in Datasheets
  67. Parametric Mid EQ Pot Wiring
  68. Need PS Audio PS IV schematic
  69. Adding Balanced Outputs Psuedo or Real?
  70. Sending an A/V multi channel pre out into another A/V line in?
  71. Copper purity of Cat-5e cable ?
  72. Balance control?
  73. Input/output transformer question
  74. Equalizing the midrange out of a small Radio Shack driver
  75. what ohmage potentiometer for line out volume control?
  76. preamp signal powered down amp
  77. Passive Balanced Attenuator (between Pre & Power)
  78. Best way to add stereo subwoofer pre-outs to existing DAC/preamp?
  79. iPhone Line Out to Car Amp
  80. Is LR4 phase shift audible
  81. line preamp /buffer /module
  82. Please evaluate this RIAA schematic (njm4580)
  83. Praamp crackling
  84. Buffer Jfet
  85. Onkyo SC-901 crossover rebuild(upgrade)
  86. Art Tube MP Help!
  87. How is the sound of the Radford ZD22 preamp compared to modern high-end preamps ?
  88. from stereo to mono (subwoofer) passive adder ?
  89. Newbie Question: Troubleshooting Simple Line Mixer
  90. About preamp circuits improvements
  91. Noob Question: Electros in signal path
  92. Passive or feedback RIAA network tube phono pre?
  93. THAT1606 based line buffer for balanced guitar - Vero design okay?
  94. Attenuating line level signal with buffer vs. resistor...
  95. New Guy Needs Help With Optimus 31-2025 Graphic Equalizer
  96. Preamp: opamp low pass filter for PS noise
  97. I could use some help on a PS Audio Preamp
  98. another opamp based preamp
  99. Comment on Grounding Scheme?
  100. Radio Shack experimenter kits
  101. Crossover for Scan Speak 6000 tweeter.
  102. Neutrik nte 10/3 help
  103. RCA to XLR
  104. BBE XR-5383 chip
  105. Balanced level preamp
  106. cinemag CMLI-15/15B, unbal--> bal
  107. Pin 1: Multiple XLRs between two amplifiers
  108. Connecting Mp3 player
  109. DIY Tone + Volume control
  110. volume control
  111. Linkwitz-Riley Electronic Crossover PCB
  112. Balanced Microphone Preamp
  113. How Much Voltage Do I Need For a Standard Headphone
  114. Yet another passive volume control
  115. Distortion and Source Impedance in JFET Input Op Amps
  116. Analog switches
  117. Yuan Jing 6n3 tube preamp power requirements and options
  118. PGA2310 frequency response
  119. Smoking Preamplifier
  120. Carver C1 preamp
  121. Meridian 201 help
  122. Active speaker- adding amp/xo
  123. basic power supply questions
  124. McIntosh C26 hum after recaping
  125. Old Volvo Tape Deck Line Level to Tape Head
  126. I Need A New Audio Input Indicator
  127. Handy Non Inverting Active Volume Control
  128. Active volume control - Be quiet please.
  129. Complementary MOS Preamp
  130. BUFFER /LINE STAGE/ BEST POSSIBLE SPEC and SOUND
  131. Simple Symmetrical Preamplifier
  132. EMT-240, EMT 262
  133. Looking for that person who can analyze and upgrade.
  134. TKD stereo attenuator 10k
  135. Douglas self four-band baxandall eq
  136. Input Noise Cancelation - LME 49990 - LT1028
  137. Baxandall Variations
  138. HELP! Electret mic - Powering from Focusrite mic preamp with 48v
  139. Output Transformer for INA217 Mic Preamp?
  140. Advise please on EQ restore...
  141. Recommendations for pre/mixer/thing boards or etc.?
  142. Daisy chain components
  143. Unidirectional Electert Mic and Preamp help.
  144. Rotary stepped attenuator (series) instructions?
  145. High Quality Splitters and Mixers
  146. Which transformations inside this Django?
  147. Balanced stepped attenuator with constant input impedance
  148. 4-ch unbalanced as stereo balanced?
  149. zobel network at driver Fs?
  150. another relay input/volume controller
  151. Basic Inverting Opamp HUM
  152. Recommendations for a simple, opamp-based low-gain stage?
  153. Art Project needs advise, wall of boomboxes
  154. Attenuator design for a modular synth?
  155. Pot values for tone control - from 25k to 10k
  156. Needing Stereo to Mono Summing help...
  157. 2.1 preamp
  158. A little advice, re capping
  159. 8 ohm volume pot
  160. Naim NAC 32.5 Gain board lower gain
  161. P7 Mini Preamp Possible Improvements
  162. Hum issue in hpf circuit
  163. CS3318 Volume Control board with IR?
  164. Balanced line behaviour on Mixer's output
  165. Akitika PR101 Preamp by Dan Joffe
  166. Which one of these wiring schemes will have lower noise?
  167. Need help identifying preamp internals. Conrad Johnson PV-1?
  168. New edition D. Self Small Signal Audio Design
  169. Subwoofer preamplifier with low frequency boost below 30Hz?
  170. Spectrum analyser using LM3915
  171. 9V opamp suggestions
  172. Circlotron LINE and RIAA Pre-Amplifiers wanted
  173. JFET choice for transformer coupled mic preamp
  174. understanding source+return current flow on PCBs
  175. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  176. can use la3161 as a simple solution in a car ?
  177. crossover commission/kit
  178. Switch both sides of input connections?
  179. Hammond 140QEX
  180. Current Amplifyer
  181. An Old Nikko power-supply section question
  182. THAT 202XT VCA + ?
  183. Need analog guru help on grounding
  184. iRig Pre Component Upgrade
  185. Calculating a TVC
  186. Balanced Microphone Preamplifier
  187. Electret Condenser Microphone preamp analysis
  188. LF Line Level Stage design to preceed class D amplifier
  189. Mic Preamp w transformer input: changing impedance
  190. Line level / unity gain vacuum tube circuits
  191. Interpret stereophile measurement data
  192. Diy passive pre and switch
  193. slow audio increase at turn on?
  194. Hammond Amplifier Modification Issue
  195. Would like some help with a "Crossover Isolator"
  196. Correct way to split line level inside dual headphone amp
  197. How can this work?
  198. Balanced input
  199. crossover / summer for "2.1" active or passive
  200. Need Advice for Bi-amping
  201. Too much DC at buffer's output
  202. passive pre-amp ?
  203. Salvaged Phono Preamp - Begginner Help
  204. Tape head amplification circuit
  205. Laptop to Guitar Amp cable. . . Resistor values?
  206. Hifi from german studio modules - help wanted
  207. Guard rings for op amps
  208. Tone control for Low bass selector and boost circuit
  209. "Lehmann" Buffer Output Transistors.
  210. Minuature Low Pass Filter
  211. Easy High-Pass Filter
  212. Analog signal control
  213. Buffer Stage
  214. Critique my first drawing / possible build [Active DI]
  215. Low pass filter for Bitstream DAC.
  216. Looking for 0-10V Analog Volume Control Circuit
  217. AVC
  218. looking for programmable eq chip / pcba module ??
  219. Another Modified PGA2311 kit with Arduino for volume control and input selection
  220. Kudies to/for the Tortuga Audio LDR3X.V2
  221. Parasound P/HP 850
  222. LECUA 1000 attenuator from Luxman ?
  223. Line Level Output to Guitar Amplifier Input
  224. is there an off the shelf preamp module that works with the apple remote?
  225. How about this sub crossover filter?
  226. help with 2 pole low pass filter/attenuator
  227. Zobel at the srpp input
  228. Preamp noise after PSU update
  229. Low level interconnect (RCA) measurements
  230. what are the blocks generally found in a pre-amp board?
  231. Carver ct-3 preamp
  232. Advice on a preamp/external volume control for use with active monitors
  233. Audiophile quality preamp
  234. Building a Line Level Mixer, Transformer advice needed
  235. Sowter type 3232
  236. Super tone controls-I need PCB
  237. L-pad attenuator on preamp output
  238. DI output protection from phantom power
  239. Getting Started on Preamp Design
  240. Balanced to unbalanced.
  241. Input device protection
  242. WTB LDR volume control PCB ?
  243. Adding Input Gain +/-
  244. Room correction using a modified Linkwitz Transform Circuit
  245. How to change active xover frecuencies
  246. non inverting opamp with gain
  247. Digital volume control for 7.1 preamp
  248. Current options for a budget active LLXO?
  249. low impedance high-pass filter
  250. AKG Perception 100 mic repair

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