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  1. P7 Mini Preamp Possible Improvements
  2. Hum issue in hpf circuit
  3. CS3318 Volume Control board with IR?
  4. Balanced line behaviour on Mixer's output
  5. Akitika PR101 Preamp by Dan Joffe
  6. Which one of these wiring schemes will have lower noise?
  7. Need help identifying preamp internals. Conrad Johnson PV-1?
  8. New edition D. Self Small Signal Audio Design
  9. Subwoofer preamplifier with low frequency boost below 30Hz?
  10. Spectrum analyser using LM3915
  11. 9V opamp suggestions
  12. Circlotron LINE and RIAA Pre-Amplifiers wanted
  13. JFET choice for transformer coupled mic preamp
  14. understanding source+return current flow on PCBs
  15. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  16. can use la3161 as a simple solution in a car ?
  17. crossover commission/kit
  18. Switch both sides of input connections?
  19. Hammond 140QEX
  20. Current Amplifyer
  21. An Old Nikko power-supply section question
  22. THAT 202XT VCA + ?
  23. Need analog guru help on grounding
  24. iRig Pre Component Upgrade
  25. Calculating a TVC
  26. Balanced Microphone Preamplifier
  27. Electret Condenser Microphone preamp analysis
  28. LF Line Level Stage design to preceed class D amplifier
  29. Mic Preamp w transformer input: changing impedance
  30. Line level / unity gain vacuum tube circuits
  31. Interpret stereophile measurement data
  32. Diy passive pre and switch
  33. slow audio increase at turn on?
  34. Hammond Amplifier Modification Issue
  35. Would like some help with a "Crossover Isolator"
  36. Correct way to split line level inside dual headphone amp
  37. How can this work?
  38. Balanced input
  39. crossover / summer for "2.1" active or passive
  40. Need Advice for Bi-amping
  41. Too much DC at buffer's output
  42. passive pre-amp ?
  43. Salvaged Phono Preamp - Begginner Help
  44. Tape head amplification circuit
  45. Laptop to Guitar Amp cable. . . Resistor values?
  46. Hifi from german studio modules - help wanted
  47. Guard rings for op amps
  48. Tone control for Low bass selector and boost circuit
  49. "Lehmann" Buffer Output Transistors.
  50. Minuature Low Pass Filter
  51. Easy High-Pass Filter
  52. Analog signal control
  53. Buffer Stage
  54. Critique my first drawing / possible build [Active DI]
  55. Low pass filter for Bitstream DAC.
  56. Looking for 0-10V Analog Volume Control Circuit
  57. AVC
  58. looking for programmable eq chip / pcba module ??
  59. Another Modified PGA2311 kit with Arduino for volume control and input selection
  60. Kudies to/for the Tortuga Audio LDR3X.V2
  61. Parasound P/HP 850
  62. LECUA 1000 attenuator from Luxman ?
  63. Line Level Output to Guitar Amplifier Input
  64. is there an off the shelf preamp module that works with the apple remote?
  65. How about this sub crossover filter?
  66. help with 2 pole low pass filter/attenuator
  67. Zobel at the srpp input
  68. Preamp noise after PSU update
  69. Low level interconnect (RCA) measurements
  70. what are the blocks generally found in a pre-amp board?
  71. Carver ct-3 preamp
  72. Advice on a preamp/external volume control for use with active monitors
  73. Audiophile quality preamp
  74. Building a Line Level Mixer, Transformer advice needed
  75. Sowter type 3232
  76. Super tone controls-I need PCB
  77. L-pad attenuator on preamp output
  78. DI output protection from phantom power
  79. Getting Started on Preamp Design
  80. Balanced to unbalanced.
  81. Input device protection
  82. WTB LDR volume control PCB ?
  83. Adding Input Gain +/-
  84. Room correction using a modified Linkwitz Transform Circuit
  85. How to change active xover frecuencies
  86. non inverting opamp with gain
  87. Digital volume control for 7.1 preamp
  88. Current options for a budget active LLXO?
  89. low impedance high-pass filter
  90. AKG Perception 100 mic repair
  91. How do I configure a simple logic control
  92. PCB, Tone Control with Transistors and dual supply
  93. very very simple DJ mixer aka summing amp?
  94. Passive low pass filter for subwoofer
  95. Linn Exotik/S non DA version lock up problem
  96. Shine7 12au7 preamp builds?
  97. non-DSP delay - is it possible?
  98. Stevens & Billington TX102 Passive preamp Built
  99. Loading considerations in Filter design
  100. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  101. Diodes instead of input selector (insane newbie question)?
  102. Experience with anti-parallel electrolytic capacitors?
  103. Best wire for passive pre?
  104. Which Op Amp Supply Bypass Technique for Low Noise?
  105. Add MONO/DIM to DAC/Preamp
  106. Crackling from input cable (even when there is no input)
  107. Best sounding signal level relay?
  108. Mic preamp around transformer
  109. Questions on op amp settling time and quiescent current.
  110. question on crossover board layout
  111. Bugle 2 problem
  112. Rca Passive Summing Box
  113. RC Chain in a 3 Band Baxandall EQ Circuit?
  114. Parallel transformer output
  115. Modding Marantz PM-15S1
  116. Sony TA4300F Crossover
  117. Upgrading a commercial phono stage
  118. New Bonsai Preamp
  119. Help with line input switch
  120. Remember the thermal noise....
  121. Help with passive attenuator for headphone amp
  122. Do amp inputs interact with each other?
  123. 6n11 preamp hum
  124. need help with boombox pre-amp/tone control design
  125. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  126. low pass filter for DAC output
  127. Driving headphone from speaker output - filtering layout
  128. Highpass mic filter
  129. suitable power supply for dozen opamps?
  130. Little sub preamp/phase circuit
  131. RCA Mixer/Combiner
  132. Offset Problem with Borbely JFET-Buffers
  133. op amp class a bias
  134. Effects of Opamp Loading?
  135. Alps RK27 Motorized Pot - Teardown
  136. TDA7439 tone control IC any good?
  137. 100HZ PLLXO
  138. Bourns PTD90 Series Potentiometer
  139. lowest load for line level equipment to not harm the output stage?
  140. Most important opamp?
  141. 5.1 decode in preamp?
  142. Preamp Recommendation For Millett "Engineer's Amplifier"
  143. Tone feedback loop- can you spot the problem?
  144. DIY turnable amplifier aka RIAA - newbie questions!
  145. Great Deal on RCA Interconnects (Canada)
  146. preamp for hlly tamp-90
  147. AD815ARB-24 availability in any online stores? couldnt find
  148. Super Chip Preamp v1.2 (LT1363)
  149. Opinion on differential low pass filter
  150. Active Low Pass
  151. Differential preamplifier
  152. trouble with varimu compressor design
  153. PGA2311 volume control.
  154. Active Crossover frequency response - help needed HH X300
  155. Suggestion For CFA Op-amp
  156. preamp/mixer combo
  157. 12 channel volume control unit?
  158. Documentation on designing preamps
  159. Clean Line Output? OPA627
  160. Active crossover with AD815?
  161. Carlos AD815 pre voltage supply recommendations
  162. Help with Sowter 1990 SUT wiring
  163. Line level rc lowpass clicking
  164. Attenuator for Passive pre amp, best sounding solution
  165. Source for custom-terminated interconnects ?
  166. Onboard JFET Instrument Low-Z Preamp Help?
  167. Why white noise is always present?
  168. How to implement a pop free/low distortion muting circuit?
  169. Suggestions Requested for Mini Buffer Preamp
  170. Mini-Me second edition tube phono preamp
  171. Balanced fixed H attenuator for line level
  172. impedance symptom
  173. How to link two cores with TRS connector?
  174. Turntable earthing woes
  175. tuac weight and tops preamp
  176. Suggestions for single bipolar input op amp?
  177. Pop/click free HW-based relay attenuator
  178. THAT 1646 PCB - help me review please
  179. new line-preamp
  180. Question on Rod Elliott's P088 op-amp based preamp
  181. Pot hum/external speakers
  182. Will this circuit work?
  183. wiring sub to tube stereo
  184. TI on Filter Noise
  185. Compressor design - Sedra/Smith book
  186. ultra low dist pre Sandman distortion null
  187. Grounding question in phono preamp with battery supply
  188. LME49990 in gain buffer - help please
  189. Khozomo MKII Attenuator review
  190. Which MM Phono Amp ?
  191. Transistors in Buffer Circuit Running Too Hot
  192. Building a complete Preamp with an Arduino, remote, volume and input control
  193. MOSFET's Rds in the signal path, when?
  194. Preferences for setting up an EQ
  195. One more volume control
  196. Shedding 2 awful junctions in the signal path
  197. Line level distribution
  198. INA217 gain calculation
  199. Does this circuit have gain?
  200. An interesting JFET-based active XO circuit from TNT Audio
  201. Peak detector reference voltage level
  202. Goldmund Mimesis 27 Preamp clone
  203. AKAI S3200XL unbal to balanced outputs with VT24499
  204. MooseFET preamplifier?
  205. 6ch(12ch) Volume Control for DSP/DAC/BUFFER/POWERAMP
  206. Parametric EQ after pre-amp
  207. TL072 VS NE5532
  208. Grounding question
  209. Need best tone control
  210. How to switch 2 Sources and 2 Amps
  211. Mic Preamp limitor/Automatic level controller
  212. Douglas Self PreAmp 2012
  213. Is this layout OK? Advice please :)
  214. Microphone Preamp balanced voltage levels
  215. PASSIVE PRE-AMPLIFIER BUILDER REQ
  216. active bass boost
  217. SSM2019 single chip preamplifier?
  218. Rane AC23B active crossover
  219. XD3 crossover?
  220. Muting Circuit
  221. Noticeable difference in low freqs between two channels on a Drawmer DL221 compressor
  222. The precise audio signal level control 5.1
  223. Yamaha a-320
  224. Why not Wye?
  225. Help with high DC at output of Forte clone
  226. Humming DRV134 balanced output.
  227. Problem with parametric equalizer
  228. HLLY AMK-II First (and last) Impressions
  229. Salas hotrodded DCB1 resistor tryouts
  230. NE5532 in quad TSSOP package or similar?
  231. Another low distortion buffer
  232. DBX-122 schematic
  233. Audible Illusions L1 background noise
  234. TDA1524A IC Pre-Amp
  235. Please confirm something basic for me
  236. Parasound P/PH-100 hum
  237. Sonographe SC22 schematics
  238. What makes Reference Line Preeminence so good?
  239. push switch pinout
  240. What is 'Good' Common Mode Rejection?
  241. mf x-p100 power supply
  242. Opamp Having Oscillation
  243. Yamaha MSP7 − 22pF between Op Amp inputs? Why?
  244. How to reduce measured noise floor in my DAC/opamp circuit
  245. Switch Types
  246. Simple MOSFET preamp
  247. The Kuartlotron - keantoken's simple error-correction superbuffer
  248. how much gain do i get on this preamp(ad797)?
  249. how to implement line level bsc on a full balanced setup?
  250. 3 channel quad mixer with front to rear pan

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