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  1. Advise please on EQ restore...
  2. Recommendations for pre/mixer/thing boards or etc.?
  3. Unidirectional Electert Mic and Preamp help.
  4. Rotary stepped attenuator (series) instructions?
  5. High Quality Splitters and Mixers
  6. Which transformations inside this Django?
  7. Balanced stepped attenuator with constant input impedance
  8. 4-ch unbalanced as stereo balanced?
  9. zobel network at driver Fs?
  10. another relay input/volume controller
  11. Basic Inverting Opamp HUM
  12. Recommendations for a simple, opamp-based low-gain stage?
  13. Art Project needs advise, wall of boomboxes
  14. Attenuator design for a modular synth?
  15. Pot values for tone control - from 25k to 10k
  16. Needing Stereo to Mono Summing help...
  17. 2.1 preamp
  18. A little advice, re capping
  19. 8 ohm volume pot
  20. Naim NAC 32.5 Gain board lower gain
  21. P7 Mini Preamp Possible Improvements
  22. Hum issue in hpf circuit
  23. CS3318 Volume Control board with IR?
  24. Balanced line behaviour on Mixer's output
  25. Akitika PR101 Preamp by Dan Joffe
  26. Which one of these wiring schemes will have lower noise?
  27. Need help identifying preamp internals. Conrad Johnson PV-1?
  28. New edition D. Self Small Signal Audio Design
  29. Subwoofer preamplifier with low frequency boost below 30Hz?
  30. Spectrum analyser using LM3915
  31. 9V opamp suggestions
  32. Circlotron LINE and RIAA Pre-Amplifiers wanted
  33. JFET choice for transformer coupled mic preamp
  34. understanding source+return current flow on PCBs
  35. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  36. can use la3161 as a simple solution in a car ?
  37. crossover commission/kit
  38. Switch both sides of input connections?
  39. Hammond 140QEX
  40. Current Amplifyer
  41. An Old Nikko power-supply section question
  42. THAT 202XT VCA + ?
  43. Need analog guru help on grounding
  44. iRig Pre Component Upgrade
  45. Calculating a TVC
  46. Balanced Microphone Preamplifier
  47. Electret Condenser Microphone preamp analysis
  48. LF Line Level Stage design to preceed class D amplifier
  49. Mic Preamp w transformer input: changing impedance
  50. Line level / unity gain vacuum tube circuits
  51. Interpret stereophile measurement data
  52. Diy passive pre and switch
  53. slow audio increase at turn on?
  54. Hammond Amplifier Modification Issue
  55. Would like some help with a "Crossover Isolator"
  56. Correct way to split line level inside dual headphone amp
  57. How can this work?
  58. Balanced input
  59. crossover / summer for "2.1" active or passive
  60. Need Advice for Bi-amping
  61. Too much DC at buffer's output
  62. passive pre-amp ?
  63. Salvaged Phono Preamp - Begginner Help
  64. Tape head amplification circuit
  65. Laptop to Guitar Amp cable. . . Resistor values?
  66. Hifi from german studio modules - help wanted
  67. Guard rings for op amps
  68. Tone control for Low bass selector and boost circuit
  69. "Lehmann" Buffer Output Transistors.
  70. Minuature Low Pass Filter
  71. Easy High-Pass Filter
  72. Analog signal control
  73. Buffer Stage
  74. Critique my first drawing / possible build [Active DI]
  75. Low pass filter for Bitstream DAC.
  76. Looking for 0-10V Analog Volume Control Circuit
  77. AVC
  78. looking for programmable eq chip / pcba module ??
  79. Another Modified PGA2311 kit with Arduino for volume control and input selection
  80. Kudies to/for the Tortuga Audio LDR3X.V2
  81. Parasound P/HP 850
  82. LECUA 1000 attenuator from Luxman ?
  83. Line Level Output to Guitar Amplifier Input
  84. is there an off the shelf preamp module that works with the apple remote?
  85. How about this sub crossover filter?
  86. help with 2 pole low pass filter/attenuator
  87. Zobel at the srpp input
  88. Preamp noise after PSU update
  89. Low level interconnect (RCA) measurements
  90. what are the blocks generally found in a pre-amp board?
  91. Carver ct-3 preamp
  92. Advice on a preamp/external volume control for use with active monitors
  93. Audiophile quality preamp
  94. Building a Line Level Mixer, Transformer advice needed
  95. Sowter type 3232
  96. Super tone controls-I need PCB
  97. L-pad attenuator on preamp output
  98. DI output protection from phantom power
  99. Getting Started on Preamp Design
  100. Balanced to unbalanced.
  101. Input device protection
  102. WTB LDR volume control PCB ?
  103. Adding Input Gain +/-
  104. Room correction using a modified Linkwitz Transform Circuit
  105. How to change active xover frecuencies
  106. non inverting opamp with gain
  107. Digital volume control for 7.1 preamp
  108. Current options for a budget active LLXO?
  109. low impedance high-pass filter
  110. AKG Perception 100 mic repair
  111. How do I configure a simple logic control
  112. PCB, Tone Control with Transistors and dual supply
  113. very very simple DJ mixer aka summing amp?
  114. Passive low pass filter for subwoofer
  115. Linn Exotik/S non DA version lock up problem
  116. Shine7 12au7 preamp builds?
  117. non-DSP delay - is it possible?
  118. Stevens & Billington TX102 Passive preamp Built
  119. Loading considerations in Filter design
  120. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  121. Diodes instead of input selector (insane newbie question)?
  122. Experience with anti-parallel electrolytic capacitors?
  123. Best wire for passive pre?
  124. Which Op Amp Supply Bypass Technique for Low Noise?
  125. Add MONO/DIM to DAC/Preamp
  126. Crackling from input cable (even when there is no input)
  127. Best sounding signal level relay?
  128. Mic preamp around transformer
  129. Questions on op amp settling time and quiescent current.
  130. question on crossover board layout
  131. Bugle 2 problem
  132. Rca Passive Summing Box
  133. RC Chain in a 3 Band Baxandall EQ Circuit?
  134. Parallel transformer output
  135. Modding Marantz PM-15S1
  136. Sony TA4300F Crossover
  137. Upgrading a commercial phono stage
  138. New Bonsai Preamp
  139. Help with line input switch
  140. Remember the thermal noise....
  141. Help with passive attenuator for headphone amp
  142. Do amp inputs interact with each other?
  143. 6n11 preamp hum
  144. need help with boombox pre-amp/tone control design
  145. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  146. low pass filter for DAC output
  147. Driving headphone from speaker output - filtering layout
  148. Highpass mic filter
  149. suitable power supply for dozen opamps?
  150. Little sub preamp/phase circuit
  151. RCA Mixer/Combiner
  152. Offset Problem with Borbely JFET-Buffers
  153. op amp class a bias
  154. Effects of Opamp Loading?
  155. Alps RK27 Motorized Pot - Teardown
  156. TDA7439 tone control IC any good?
  157. 100HZ PLLXO
  158. Bourns PTD90 Series Potentiometer
  159. lowest load for line level equipment to not harm the output stage?
  160. Most important opamp?
  161. 5.1 decode in preamp?
  162. Preamp Recommendation For Millett "Engineer's Amplifier"
  163. Tone feedback loop- can you spot the problem?
  164. DIY turnable amplifier aka RIAA - newbie questions!
  165. Great Deal on RCA Interconnects (Canada)
  166. preamp for hlly tamp-90
  167. AD815ARB-24 availability in any online stores? couldnt find
  168. Super Chip Preamp v1.2 (LT1363)
  169. Opinion on differential low pass filter
  170. Active Low Pass
  171. Differential preamplifier
  172. trouble with varimu compressor design
  173. PGA2311 volume control.
  174. Active Crossover frequency response - help needed HH X300
  175. Suggestion For CFA Op-amp
  176. preamp/mixer combo
  177. 12 channel volume control unit?
  178. Documentation on designing preamps
  179. Clean Line Output? OPA627
  180. Active crossover with AD815?
  181. Carlos AD815 pre voltage supply recommendations
  182. Help with Sowter 1990 SUT wiring
  183. Line level rc lowpass clicking
  184. Attenuator for Passive pre amp, best sounding solution
  185. Source for custom-terminated interconnects ?
  186. Onboard JFET Instrument Low-Z Preamp Help?
  187. Why white noise is always present?
  188. How to implement a pop free/low distortion muting circuit?
  189. Suggestions Requested for Mini Buffer Preamp
  190. Mini-Me second edition tube phono preamp
  191. Balanced fixed H attenuator for line level
  192. impedance symptom
  193. How to link two cores with TRS connector?
  194. Turntable earthing woes
  195. tuac weight and tops preamp
  196. Suggestions for single bipolar input op amp?
  197. Pop/click free HW-based relay attenuator
  198. THAT 1646 PCB - help me review please
  199. new line-preamp
  200. Question on Rod Elliott's P088 op-amp based preamp
  201. Pot hum/external speakers
  202. Will this circuit work?
  203. wiring sub to tube stereo
  204. TI on Filter Noise
  205. Compressor design - Sedra/Smith book
  206. ultra low dist pre Sandman distortion null
  207. Grounding question in phono preamp with battery supply
  208. LME49990 in gain buffer - help please
  209. Khozomo MKII Attenuator review
  210. Which MM Phono Amp ?
  211. Transistors in Buffer Circuit Running Too Hot
  212. Building a complete Preamp with an Arduino, remote, volume and input control
  213. MOSFET's Rds in the signal path, when?
  214. Preferences for setting up an EQ
  215. One more volume control
  216. Shedding 2 awful junctions in the signal path
  217. Line level distribution
  218. INA217 gain calculation
  219. Does this circuit have gain?
  220. An interesting JFET-based active XO circuit from TNT Audio
  221. Peak detector reference voltage level
  222. Goldmund Mimesis 27 Preamp clone
  223. AKAI S3200XL unbal to balanced outputs with VT24499
  224. MooseFET preamplifier?
  225. 6ch(12ch) Volume Control for DSP/DAC/BUFFER/POWERAMP
  226. Parametric EQ after pre-amp
  227. TL072 VS NE5532
  228. Grounding question
  229. Need best tone control
  230. How to switch 2 Sources and 2 Amps
  231. Mic Preamp limitor/Automatic level controller
  232. Douglas Self PreAmp 2012
  233. Is this layout OK? Advice please :)
  234. Microphone Preamp balanced voltage levels
  235. PASSIVE PRE-AMPLIFIER BUILDER REQ
  236. active bass boost
  237. SSM2019 single chip preamplifier?
  238. Rane AC23B active crossover
  239. XD3 crossover?
  240. Muting Circuit
  241. Noticeable difference in low freqs between two channels on a Drawmer DL221 compressor
  242. The precise audio signal level control 5.1
  243. Yamaha a-320
  244. Why not Wye?
  245. Help with high DC at output of Forte clone
  246. Humming DRV134 balanced output.
  247. Problem with parametric equalizer
  248. HLLY AMK-II First (and last) Impressions
  249. Salas hotrodded DCB1 resistor tryouts
  250. NE5532 in quad TSSOP package or similar?

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