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  1. slow audio increase at turn on?
  2. Hammond Amplifier Modification Issue
  3. Would like some help with a "Crossover Isolator"
  4. Correct way to split line level inside dual headphone amp
  5. How can this work?
  6. Balanced input
  7. crossover / summer for "2.1" active or passive
  8. Need Advice for Bi-amping
  9. Too much DC at buffer's output
  10. passive pre-amp ?
  11. Salvaged Phono Preamp - Begginner Help
  12. Tape head amplification circuit
  13. Laptop to Guitar Amp cable. . . Resistor values?
  14. Hifi from german studio modules - help wanted
  15. Guard rings for op amps
  16. Tone control for Low bass selector and boost circuit
  17. "Lehmann" Buffer Output Transistors.
  18. Minuature Low Pass Filter
  19. Easy High-Pass Filter
  20. Analog signal control
  21. Buffer Stage
  22. Critique my first drawing / possible build [Active DI]
  23. Low pass filter for Bitstream DAC.
  24. Looking for 0-10V Analog Volume Control Circuit
  25. AVC
  26. looking for programmable eq chip / pcba module ??
  27. Another Modified PGA2311 kit with Arduino for volume control and input selection
  28. Kudies to/for the Tortuga Audio LDR3X.V2
  29. Parasound P/HP 850
  30. LECUA 1000 attenuator from Luxman ?
  31. Line Level Output to Guitar Amplifier Input
  32. is there an off the shelf preamp module that works with the apple remote?
  33. How about this sub crossover filter?
  34. help with 2 pole low pass filter/attenuator
  35. Zobel at the srpp input
  36. Preamp noise after PSU update
  37. Low level interconnect (RCA) measurements
  38. what are the blocks generally found in a pre-amp board?
  39. Carver ct-3 preamp
  40. Advice on a preamp/external volume control for use with active monitors
  41. Audiophile quality preamp
  42. Building a Line Level Mixer, Transformer advice needed
  43. Sowter type 3232
  44. Super tone controls-I need PCB
  45. L-pad attenuator on preamp output
  46. DI output protection from phantom power
  47. Getting Started on Preamp Design
  48. Balanced to unbalanced.
  49. Input device protection
  50. WTB LDR volume control PCB ?
  51. Adding Input Gain +/-
  52. Room correction using a modified Linkwitz Transform Circuit
  53. How to change active xover frecuencies
  54. non inverting opamp with gain
  55. Digital volume control for 7.1 preamp
  56. Current options for a budget active LLXO?
  57. low impedance high-pass filter
  58. AKG Perception 100 mic repair
  59. How do I configure a simple logic control
  60. PCB, Tone Control with Transistors and dual supply
  61. very very simple DJ mixer aka summing amp?
  62. Passive low pass filter for subwoofer
  63. Linn Exotik/S non DA version lock up problem
  64. Shine7 12au7 preamp builds?
  65. non-DSP delay - is it possible?
  66. Stevens & Billington TX102 Passive preamp Built
  67. Loading considerations in Filter design
  68. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  69. Diodes instead of input selector (insane newbie question)?
  70. Experience with anti-parallel electrolytic capacitors?
  71. Best wire for passive pre?
  72. Which Op Amp Supply Bypass Technique for Low Noise?
  73. Add MONO/DIM to DAC/Preamp
  74. Crackling from input cable (even when there is no input)
  75. Best sounding signal level relay?
  76. Mic preamp around transformer
  77. Questions on op amp settling time and quiescent current.
  78. question on crossover board layout
  79. Bugle 2 problem
  80. Rca Passive Summing Box
  81. RC Chain in a 3 Band Baxandall EQ Circuit?
  82. Parallel transformer output
  83. Modding Marantz PM-15S1
  84. Sony TA4300F Crossover
  85. Upgrading a commercial phono stage
  86. New Bonsai Preamp
  87. Help with line input switch
  88. Remember the thermal noise....
  89. Help with passive attenuator for headphone amp
  90. Do amp inputs interact with each other?
  91. 6n11 preamp hum
  92. need help with boombox pre-amp/tone control design
  93. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  94. low pass filter for DAC output
  95. Driving headphone from speaker output - filtering layout
  96. Highpass mic filter
  97. suitable power supply for dozen opamps?
  98. Little sub preamp/phase circuit
  99. RCA Mixer/Combiner
  100. Offset Problem with Borbely JFET-Buffers
  101. op amp class a bias
  102. Effects of Opamp Loading?
  103. Alps RK27 Motorized Pot - Teardown
  104. TDA7439 tone control IC any good?
  105. 100HZ PLLXO
  106. Bourns PTD90 Series Potentiometer
  107. lowest load for line level equipment to not harm the output stage?
  108. Most important opamp?
  109. 5.1 decode in preamp?
  110. Preamp Recommendation For Millett "Engineer's Amplifier"
  111. Tone feedback loop- can you spot the problem?
  112. DIY turnable amplifier aka RIAA - newbie questions!
  113. Great Deal on RCA Interconnects (Canada)
  114. preamp for hlly tamp-90
  115. AD815ARB-24 availability in any online stores? couldnt find
  116. Super Chip Preamp v1.2 (LT1363)
  117. Opinion on differential low pass filter
  118. Active Low Pass
  119. Differential preamplifier
  120. trouble with varimu compressor design
  121. PGA2311 volume control.
  122. Active Crossover frequency response - help needed HH X300
  123. Suggestion For CFA Op-amp
  124. preamp/mixer combo
  125. 12 channel volume control unit?
  126. Documentation on designing preamps
  127. Clean Line Output? OPA627
  128. Active crossover with AD815?
  129. Carlos AD815 pre voltage supply recommendations
  130. Help with Sowter 1990 SUT wiring
  131. Line level rc lowpass clicking
  132. Attenuator for Passive pre amp, best sounding solution
  133. Source for custom-terminated interconnects ?
  134. Onboard JFET Instrument Low-Z Preamp Help?
  135. Why white noise is always present?
  136. How to implement a pop free/low distortion muting circuit?
  137. Suggestions Requested for Mini Buffer Preamp
  138. Mini-Me second edition tube phono preamp
  139. Balanced fixed H attenuator for line level
  140. impedance symptom
  141. How to link two cores with TRS connector?
  142. Turntable earthing woes
  143. tuac weight and tops preamp
  144. Suggestions for single bipolar input op amp?
  145. Pop/click free HW-based relay attenuator
  146. THAT 1646 PCB - help me review please
  147. new line-preamp
  148. Question on Rod Elliott's P088 op-amp based preamp
  149. Pot hum/external speakers
  150. Will this circuit work?
  151. wiring sub to tube stereo
  152. TI on Filter Noise
  153. Compressor design - Sedra/Smith book
  154. ultra low dist pre Sandman distortion null
  155. Grounding question in phono preamp with battery supply
  156. LME49990 in gain buffer - help please
  157. Khozomo MKII Attenuator review
  158. Which MM Phono Amp ?
  159. Transistors in Buffer Circuit Running Too Hot
  160. Building a complete Preamp with an Arduino, remote, volume and input control
  161. MOSFET's Rds in the signal path, when?
  162. Preferences for setting up an EQ
  163. One more volume control
  164. Shedding 2 awful junctions in the signal path
  165. Line level distribution
  166. INA217 gain calculation
  167. Does this circuit have gain?
  168. An interesting JFET-based active XO circuit from TNT Audio
  169. Peak detector reference voltage level
  170. Goldmund Mimesis 27 Preamp clone
  171. AKAI S3200XL unbal to balanced outputs with VT24499
  172. MooseFET preamplifier?
  173. 6ch(12ch) Volume Control for DSP/DAC/BUFFER/POWERAMP
  174. Parametric EQ after pre-amp
  175. TL072 VS NE5532
  176. Grounding question
  177. Need best tone control
  178. How to switch 2 Sources and 2 Amps
  179. Mic Preamp limitor/Automatic level controller
  180. Douglas Self PreAmp 2012
  181. Is this layout OK? Advice please :)
  182. Microphone Preamp balanced voltage levels
  183. PASSIVE PRE-AMPLIFIER BUILDER REQ
  184. active bass boost
  185. SSM2019 single chip preamplifier?
  186. Rane AC23B active crossover
  187. XD3 crossover?
  188. Muting Circuit
  189. Noticeable difference in low freqs between two channels on a Drawmer DL221 compressor
  190. The precise audio signal level control 5.1
  191. Yamaha a-320
  192. Why not Wye?
  193. Help with high DC at output of Forte clone
  194. Humming DRV134 balanced output.
  195. Problem with parametric equalizer
  196. HLLY AMK-II First (and last) Impressions
  197. Salas hotrodded DCB1 resistor tryouts
  198. NE5532 in quad TSSOP package or similar?
  199. Another low distortion buffer
  200. DBX-122 schematic
  201. Audible Illusions L1 background noise
  202. TDA1524A IC Pre-Amp
  203. Please confirm something basic for me
  204. Parasound P/PH-100 hum
  205. Sonographe SC22 schematics
  206. What makes Reference Line Preeminence so good?
  207. push switch pinout
  208. What is 'Good' Common Mode Rejection?
  209. mf x-p100 power supply
  210. Opamp Having Oscillation
  211. Yamaha MSP7 − 22pF between Op Amp inputs? Why?
  212. How to reduce measured noise floor in my DAC/opamp circuit
  213. Switch Types
  214. Simple MOSFET preamp
  215. The Kuartlotron - keantoken's simple error-correction superbuffer
  216. how much gain do i get on this preamp(ad797)?
  217. how to implement line level bsc on a full balanced setup?
  218. 3 channel quad mixer with front to rear pan
  219. Meridian 502 balanced output circuit
  220. kmtech 2 way, active x over, is it elliptical?
  221. Attenuator kit suggestions sought
  222. How do you create a low shelf with passives?
  223. harman opamp advice
  224. Help needed with a transamp mic preamp circuit.
  225. Kleos 2 Way JFET Crossover with EQ
  226. see this preamp circuit diagram
  227. pre-amp tune up
  228. Preamplifier with aux and mic inputs
  229. Schematic wanted for portable SONY Monaural Receiver ICF-6000L
  230. Need a high quality SS mic preamp kit
  231. Marantz 2270 Preamp
  232. Source selector without mechanical switch
  233. Imaging skewed to the left
  234. THD calc from spectrum analyzer help
  235. A question regarding "loudness"
  236. Did I put these back in the correct spots?
  237. Lookin for nice simple XLR out preamp?
  238. Boz preamp and PLLXO
  239. Sound City studios/Neve etc Documentary
  240. Adding a tube preamp to a solid state combo amp
  241. BAT VK-32SE
  242. The Heavy Cross - ideas about a transconductance phase-splitting amp
  243. Tip on high amplification, low distortion, single-ended, no feedback circuitry?
  244. PC900 tube as a preamp...pictures
  245. Input transformer for summing amp
  246. Stereo to mono summing, which end to sum?
  247. Bass distortion when using digital pot
  248. need help with mute circuit for preamp
  249. JC2 v1.6 preamplifier build
  250. 3-pin balanced XLR - gender conventions

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