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  1. Looking for a Cheap, simple Opamp gain stage
  2. Phantom Powered Stereo DI
  3. Why so difficult; It's just a switch
  4. Buzzing passive pre-amp
  5. do i need a preamp for a passive mixer?
  6. Wire gauge for amplifier's signal level input.
  7. CD Line out - PC sound
  8. Phono pre with Jfet and then ad815 at the second stage..
  9. Replacement for Monacor's RCA Connector T-724G wanted
  10. synare clone kit
  11. Full-Analog Arduino(or embedded)-CTRL 2wayCrossover
  12. Line Level Transformer Impedance
  13. Need help with schematics
  14. Luminous Axiom Passive Pre with 2 Outputs - Dumb Question
  15. how to remote control a rotary switch
  16. NE5532 preamp questions
  17. Using O2 as preamp
  18. 0.005% Distortion Tone Control Preamp, NJW1119A Chipset
  19. Low pass filter for subwoofer.
  20. Getting 10-15 dB gain from an opamp buffer circuit?
  21. Simple Volume Knob&Limiter?
  22. Phono card as standalone unit
  23. Passive Preamp schematic for multiple inputs and 2 outputs - help?
  24. 3-way input audio input switching board (ebay)
  25. mixer line in gain control
  26. Single ended Baxandall control - offset on pots
  27. HK825 replace Balance Pot
  28. Simple attenuation needed
  29. Looking for circuit improvement advice(Precision Fidelity C8)
  30. pre-amp with 2 stages adjustable gain
  31. portable discrete mic preamp
  32. Preventing source selector 'thump' using transformer?
  33. Bass loss after static shock - HELP
  34. R-2R attenuator PCB layout question
  35. Using 2SK170/J74BL in Ebay JC-2 "Clone"
  36. Is this signal path correct?
  37. Op amp band pass filter connection problems
  38. lpf calculator
  39. impedance matching question
  40. Custom 6H30 linestage
  41. DIY microphone preamp for Monacor MCE-404U capsule
  42. AD815 or THS6012 pros and cons
  43. What is the impedance out of a voltage divider?
  44. Phono Preamp Question...
  45. Analogue Parametric EQ - Calrec Polar...
  46. Sony pcm 7010 - XLR to RCA input
  47. TDA1524A preamp
  48. Wishlist: Op Amp Characterization Curves in Datasheets
  49. Parametric Mid EQ Pot Wiring
  50. Need PS Audio PS IV schematic
  51. Adding Balanced Outputs Psuedo or Real?
  52. Sending an A/V multi channel pre out into another A/V line in?
  53. Copper purity of Cat-5e cable ?
  54. Balance control?
  55. Input/output transformer question
  56. Equalizing the midrange out of a small Radio Shack driver
  57. what ohmage potentiometer for line out volume control?
  58. preamp signal powered down amp
  59. Passive Balanced Attenuator (between Pre & Power)
  60. Best way to add stereo subwoofer pre-outs to existing DAC/preamp?
  61. iPhone Line Out to Car Amp
  62. Is LR4 phase shift audible
  63. line preamp /buffer /module
  64. Please evaluate this RIAA schematic (njm4580)
  65. Praamp crackling
  66. Buffer Jfet
  67. Onkyo SC-901 crossover rebuild(upgrade)
  68. Art Tube MP Help!
  69. How is the sound of the Radford ZD22 preamp compared to modern high-end preamps ?
  70. from stereo to mono (subwoofer) passive adder ?
  71. Newbie Question: Troubleshooting Simple Line Mixer
  72. About preamp circuits improvements
  73. Noob Question: Electros in signal path
  74. Passive or feedback RIAA network tube phono pre?
  75. THAT1606 based line buffer for balanced guitar - Vero design okay?
  76. Attenuating line level signal with buffer vs. resistor...
  77. New Guy Needs Help With Optimus 31-2025 Graphic Equalizer
  78. Preamp: opamp low pass filter for PS noise
  79. I could use some help on a PS Audio Preamp
  80. another opamp based preamp
  81. Comment on Grounding Scheme?
  82. Radio Shack experimenter kits
  83. Crossover for Scan Speak 6000 tweeter.
  84. Neutrik nte 10/3 help
  85. RCA to XLR
  86. BBE XR-5383 chip
  87. Balanced level preamp
  88. cinemag CMLI-15/15B, unbal--> bal
  89. Pin 1: Multiple XLRs between two amplifiers
  90. Connecting Mp3 player
  91. DIY Tone + Volume control
  92. volume control
  93. Linkwitz-Riley Electronic Crossover PCB
  94. Balanced Microphone Preamp
  95. How Much Voltage Do I Need For a Standard Headphone
  96. Yet another passive volume control
  97. Distortion and Source Impedance in JFET Input Op Amps
  98. Analog switches
  99. Yuan Jing 6n3 tube preamp power requirements and options
  100. PGA2310 frequency response
  101. Smoking Preamplifier
  102. Carver C1 preamp
  103. Meridian 201 help
  104. Active speaker- adding amp/xo
  105. basic power supply questions
  106. McIntosh C26 hum after recaping
  107. Old Volvo Tape Deck Line Level to Tape Head
  108. I Need A New Audio Input Indicator
  109. Handy Non Inverting Active Volume Control
  110. Active volume control - Be quiet please.
  111. Complementary MOS Preamp
  112. BUFFER /LINE STAGE/ BEST POSSIBLE SPEC and SOUND
  113. Simple Symmetrical Preamplifier
  114. EMT-240, EMT 262
  115. Looking for that person who can analyze and upgrade.
  116. TKD stereo attenuator 10k
  117. Douglas self four-band baxandall eq
  118. Input Noise Cancelation - LME 49990 - LT1028
  119. Baxandall Variations
  120. HELP! Electret mic - Powering from Focusrite mic preamp with 48v
  121. Output Transformer for INA217 Mic Preamp?
  122. Advise please on EQ restore...
  123. Recommendations for pre/mixer/thing boards or etc.?
  124. Daisy chain components
  125. Unidirectional Electert Mic and Preamp help.
  126. Rotary stepped attenuator (series) instructions?
  127. High Quality Splitters and Mixers
  128. Which transformations inside this Django?
  129. Balanced stepped attenuator with constant input impedance
  130. 4-ch unbalanced as stereo balanced?
  131. zobel network at driver Fs?
  132. another relay input/volume controller
  133. Basic Inverting Opamp HUM
  134. Recommendations for a simple, opamp-based low-gain stage?
  135. Art Project needs advise, wall of boomboxes
  136. Attenuator design for a modular synth?
  137. Pot values for tone control - from 25k to 10k
  138. Needing Stereo to Mono Summing help...
  139. 2.1 preamp
  140. A little advice, re capping
  141. 8 ohm volume pot
  142. Naim NAC 32.5 Gain board lower gain
  143. P7 Mini Preamp Possible Improvements
  144. Hum issue in hpf circuit
  145. CS3318 Volume Control board with IR?
  146. Balanced line behaviour on Mixer's output
  147. Akitika PR101 Preamp by Dan Joffe
  148. Which one of these wiring schemes will have lower noise?
  149. Need help identifying preamp internals. Conrad Johnson PV-1?
  150. New edition D. Self Small Signal Audio Design
  151. Subwoofer preamplifier with low frequency boost below 30Hz?
  152. Spectrum analyser using LM3915
  153. 9V opamp suggestions
  154. Circlotron LINE and RIAA Pre-Amplifiers wanted
  155. JFET choice for transformer coupled mic preamp
  156. understanding source+return current flow on PCBs
  157. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  158. can use la3161 as a simple solution in a car ?
  159. crossover commission/kit
  160. Switch both sides of input connections?
  161. Hammond 140QEX
  162. Current Amplifyer
  163. An Old Nikko power-supply section question
  164. THAT 202XT VCA + ?
  165. Need analog guru help on grounding
  166. iRig Pre Component Upgrade
  167. Calculating a TVC
  168. Balanced Microphone Preamplifier
  169. Electret Condenser Microphone preamp analysis
  170. LF Line Level Stage design to preceed class D amplifier
  171. Mic Preamp w transformer input: changing impedance
  172. Line level / unity gain vacuum tube circuits
  173. Interpret stereophile measurement data
  174. Diy passive pre and switch
  175. slow audio increase at turn on?
  176. Hammond Amplifier Modification Issue
  177. Would like some help with a "Crossover Isolator"
  178. Correct way to split line level inside dual headphone amp
  179. How can this work?
  180. Balanced input
  181. crossover / summer for "2.1" active or passive
  182. Need Advice for Bi-amping
  183. Too much DC at buffer's output
  184. passive pre-amp ?
  185. Salvaged Phono Preamp - Begginner Help
  186. Tape head amplification circuit
  187. Laptop to Guitar Amp cable. . . Resistor values?
  188. Hifi from german studio modules - help wanted
  189. Guard rings for op amps
  190. Tone control for Low bass selector and boost circuit
  191. "Lehmann" Buffer Output Transistors.
  192. Minuature Low Pass Filter
  193. Easy High-Pass Filter
  194. Analog signal control
  195. Buffer Stage
  196. Critique my first drawing / possible build [Active DI]
  197. Low pass filter for Bitstream DAC.
  198. Looking for 0-10V Analog Volume Control Circuit
  199. AVC
  200. looking for programmable eq chip / pcba module ??
  201. Another Modified PGA2311 kit with Arduino for volume control and input selection
  202. Kudies to/for the Tortuga Audio LDR3X.V2
  203. Parasound P/HP 850
  204. LECUA 1000 attenuator from Luxman ?
  205. Line Level Output to Guitar Amplifier Input
  206. is there an off the shelf preamp module that works with the apple remote?
  207. How about this sub crossover filter?
  208. help with 2 pole low pass filter/attenuator
  209. Zobel at the srpp input
  210. Preamp noise after PSU update
  211. Low level interconnect (RCA) measurements
  212. what are the blocks generally found in a pre-amp board?
  213. Carver ct-3 preamp
  214. Advice on a preamp/external volume control for use with active monitors
  215. Audiophile quality preamp
  216. Building a Line Level Mixer, Transformer advice needed
  217. Sowter type 3232
  218. Super tone controls-I need PCB
  219. L-pad attenuator on preamp output
  220. DI output protection from phantom power
  221. Getting Started on Preamp Design
  222. Balanced to unbalanced.
  223. Input device protection
  224. WTB LDR volume control PCB ?
  225. Adding Input Gain +/-
  226. Room correction using a modified Linkwitz Transform Circuit
  227. How to change active xover frecuencies
  228. non inverting opamp with gain
  229. Digital volume control for 7.1 preamp
  230. Current options for a budget active LLXO?
  231. low impedance high-pass filter
  232. AKG Perception 100 mic repair
  233. How do I configure a simple logic control
  234. PCB, Tone Control with Transistors and dual supply
  235. very very simple DJ mixer aka summing amp?
  236. Passive low pass filter for subwoofer
  237. Linn Exotik/S non DA version lock up problem
  238. Shine7 12au7 preamp builds?
  239. non-DSP delay - is it possible?
  240. Stevens & Billington TX102 Passive preamp Built
  241. Loading considerations in Filter design
  242. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  243. Diodes instead of input selector (insane newbie question)?
  244. Experience with anti-parallel electrolytic capacitors?
  245. Best wire for passive pre?
  246. Which Op Amp Supply Bypass Technique for Low Noise?
  247. Add MONO/DIM to DAC/Preamp
  248. Crackling from input cable (even when there is no input)
  249. Best sounding signal level relay?
  250. Mic preamp around transformer

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