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  1. Aikido - approximate input impedance
  2. Ultimate analogue tone control or an audiophool overkill? :)
  3. A remote control preamp in the works
  4. Custom Equalizer Design needed
  5. Multichannel preamp
  6. Hafler Iris Preamp balance issue - fixed
  7. Acurus L10 Preamp Mods & Schematic
  8. Home made DSP / FPGA digital audio mixer
  9. Soundcraft LX7 Replacement parts
  10. Bonsai's practical buffer
  11. Help needed with an audio signal splitter solution
  12. Crosstalk?
  13. i want to throw something
  14. Optimizing resistor placement Vishay TX2575
  15. Input impedance of PRE vs sensitivity to disturbance
  16. PIC Controlled PGA 2320 8 Channel Preamp
  17. How to change a degree of volume pot rotation by remote control?
  18. tamura input transformer shield
  19. Need a help: Mark Levinson No26.
  20. LME49720 Pre amp PCB/Kit
  21. Faulty mixer inputs
  22. Basic home cinema wiring advice
  23. Diamond Cascode, a Diamond-like buffer/current booster
  24. Unusual high-pitched whistle caused by my Audio Pre-AMP
  25. Looking to build stereo mixer but can't find many schematics!
  26. Aureus preAmplifier
  27. strange! LM-4562 question
  28. Tube Preamp hummmmmm
  29. LCDuino-1 Processor, using non-latching relays help
  30. CS3318 PCB Layout
  31. Levels in an active three-way system
  32. Source selector using Analog switches or multiplexers - opinions?
  33. Yet another PGA23xx board...
  34. Concentric shaft Alps "Blue" pot
  35. Cleaning dusty printed circuit boards
  36. ad797 plus buf634
  37. Bypass - ceramic or film?
  38. tweeter crossover
  39. This pre-amp good?
  40. Remote Control Pot
  41. VU Meter ballistics
  42. The "AmpDuino" project
  43. Capacitors at 50v vs 25v on replacement in preamp power supply?
  44. Knocking sound coming from PCB
  45. Versatile quad-amp card
  46. 4-channel 20dB gain stage with unbal inputs and unbal+bal outputs: Any Interest?
  47. Just built a Hagerman Cornet 2 phono pre
  48. ad797 questions
  49. [Newbie]Audio bandpass filter design
  50. Wideband DCA preamp with shunt PS
  51. 3-way input selector + Attenuator + Balanced outputs?
  52. subwoofer circuit
  53. Motorised Volume Pot - Controller isolation
  54. Audio compressor to lower TV commercials-help needed
  55. AUS: Alpha 20/10 Preamp & Sigma 22 Builder Required
  56. 2ch passive stereo summing circuit?
  57. designing a 1-Hz lowpass with no DC error
  58. What is a preamp actually doing?
  59. Choosing attenuator for MF X-10D Clone
  60. some questions about DC servo mic pre's
  61. Need hekp with how to select a preamp
  62. Weird problem with a preamp with 3 band EQ module
  63. TEAC VU Meter Hookup
  64. input transformer frequency response?
  65. Help wanted checking vero layout for active 4 channel mixer
  66. Simple non-digital input selector
  67. dc on only one primary of the line trafo
  68. Volume potmeter Technics Su 8600
  69. Servo on non-inverting opamp ?
  70. Any suggestions to improve these output and input filters?
  71. simple solution for VU-Meter
  72. Combined Speaker-Amplifier Project
  73. Teac AN-60 Alignment
  74. 2.5v achieves lower distortion on LDR NSL32SR2
  75. Help Gain clone supply PCB design
  76. HOW TO MEASURE interference between e.g. 20kHz and 21kHz tones?
  77. 3-way signal splitter
  78. implimenting linkwitz's notch/dip filter for room eq
  79. Anyone seen this EQ before?
  80. ReCapping marantz av-9000 16v 13000uf
  81. Audio Processing
  82. Anyone know what these caps are for?
  83. Is coax needed to wire a microphone?
  84. How do I choose a preamplifier that would be compatible with this microphone?
  85. W06M – Bridge Rectifier, equivalent substitute
  86. Preamplifier kit information
  87. Handling +4dBu/-10dBv and un/balanced
  88. Line receiver and driver pcb?
  89. 2 conductor shielded cable
  90. HIGHLEVEL INPUT IN PLATE AMP!
  91. 20hz high pass on Ashly XR2000 - removable?
  92. Transformer Based Balanced Output & Impedance
  93. Poll for the participants of "John Curl's Blowtorch preamplifier part II"
  94. John Bowers Active Control Unit preamp: Info sought
  95. Looking for pointers on first DIY preamp please.
  96. Simple analog vu-meter driver ?
  97. Please pardon the noob question. need guidance
  98. Build a high pass filter for amplifier
  99. Critique on success of this subwoofer cutoff project?
  100. Need gain AMOUNT for mobile phone/pc sources
  101. re-replacing 2sk213/j76 transistors help
  102. Preventing crossover between mixers
  103. RCA LMI- 32215 A - for recording studio.
  104. Rane pot help please...
  105. Simple low voltage tube preamp stage
  106. HELP me design a discrete current sinking positive V regulator
  107. True Biamping and Active crossovers info request
  108. Question about hypex balanced vs unbalanced
  109. Soundcraftsmen
  110. very small noob question project 88
  111. Help with cable conundrum!
  112. P7 Pre amp Trouble
  113. Party-line / Full-duplex intercom - mixing audio signals
  114. ZSP1 preamp gain
  115. Acurus L10 Powersupply
  116. Building an Analog to Digital Converter Unit...
  117. DIY pre amp board
  118. Opamp power bypass
  119. Tone Control - Volatage range for TL072/LF252-N
  120. Stereo volume attenuation
  121. Quad channel volume control
  122. Work? L, R RCA inputs -> 1 XLR out?
  123. Impedance matching pre -> power.
  124. LME49740 vs TL074, design considerations and stability
  125. Solid state R2R attenuator using analog switches or multiplying DAC
  126. MF nuvista source selector problem again
  127. What do we think about solid-state potentiometers?
  128. TubeCAD's ACF2 as a active crossover
  129. Phaseca--My new diy pre amp
  130. looking for bass treble pcb pattern
  131. Mobile recording using linein
  132. [Need] simple preamp and LPF based on 5532 for digital sources
  133. wall-based trasformer volume control as passive pre?
  134. noob stab in the dark - riaa preamp
  135. Oscillating Op-Amp
  136. Preamp for shotgun mic
  137. Mark Levinson No 38, Need Help
  138. Help! Kenwood Basic C-2 left channel out (phono only)
  139. Signal delay schematic
  140. Adding 4 channels to a 2 channel input on HT amp
  141. vumeter (stereo, mono)
  142. Acquired Some Elan Components, What are They?
  143. Pre-mix for boombox
  144. Reed Switch Audio Attenuator
  145. "Balanced" PGA2311?
  146. 2 way crossover on Chinese pcbs
  147. SE to Balanced pre question
  148. Interconnect Ground Cable Ground Loops
  149. PGA2310 - PGA2311 - CS3310: version without OPAMP for outdoor OPAmp connection wanted
  150. Any AIKIDO-philes who know why Broskie has changed the formula
  151. One More Overcomplicated Mic Preamp
  152. Problems with subwoofer phase control picking up noise
  153. IC's get hammered
  154. Left/Right channel balance control
  155. Potentiometer Selection
  156. All-In-One Preamp Circuit
  157. Line level mixing
  158. Booze Hounds Labs Phono any good?
  159. PLLXO - Am I doing this right?
  160. Need an Active 2nd Order Low Shelf Filter aka Low Shelving Filter
  161. Switching Noise Between Preamps
  162. Bluetooth Lightspeed attenuator
  163. Help getting 5.1 preamp from Ebay repaired please!
  164. Should using balanced cables to amplified monitors improve sound ?
  165. Apox Audio preamp reborn with the power of Arduino
  166. Does an Op Amp Voltage Follower Operate in Class A?
  167. My boozehound phono stage build
  168. Pre amp kit
  169. balanced preamplifier based on LME49990
  170. Merging two channels with passive low passes
  171. Old Colony Sound Lab T-2D Line Amp - Any Info?
  172. Impedance Bridging and Isolation Tranformer
  173. TDA7315 chip parameters interpretation
  174. MFP-102 N fet compatibility
  175. What is the effect of a 22K res in series with a 25K volume pot?
  176. Senior Project: Bandpass Equalizer pedal
  177. [WANTED] Mark Levinson No 26S Service Manual/Schematic
  178. ORTF is best for stereo recording
  179. A zero impedance preamp and CMRR
  180. good preamp
  181. calculate crossover with Re or impedance ?
  182. Op-Amp Preamp Circuit for Electret Mic
  183. Simple Router (then bass management)
  184. Second order shelving filter
  185. Help with component selection.
  186. passive to tame 8khz peak
  187. Hafler SE100 Preamplifier / Symmetric B1 buffer hybrid
  188. Adcom GFP-750 -Needs Repair
  189. Variable gain op-amp for volume control (vs normal voltage divider pot)
  190. Germanium Transistor and FET opamp
  191. 5 zone preamp based on Arduino controlled optocoupler
  192. How to select the right impedance for volume control
  193. In vehicle Pre-amp for mic (12+ VDC)
  194. Resistor-Diode-Relay Logic Source Selector
  195. 3 into 1 input the other way round
  196. Nagging Ground Issue
  197. Looking for Princeton Applied Research 115 MANUAL
  198. Active Band Pass Filter with +/- Gain
  199. Components source
  200. Guitar ABY or Headphone Amplifier?
  201. rod elliot p88 preamp knob arrangment
  202. C-Mos opamps in audio preamplifiers
  203. Cheap, balanced XLR passive pre?
  204. DIY crossover - Sallen-Key?
  205. Hafler 915 preamp cap question
  206. analog 3.5mm to digital usb possible?
  207. Mixer Pre-amp
  208. DIY tube preamp - help with choosing the right kit
  209. opamp channels mysteriously mixing ¿quantum thing or me too dumb?
  210. MC-22 schematic question
  211. unbalanced/balanced to balanced converter
  212. My line buffer preamp
  213. Attenuating Preamp Filter Question
  214. biamping with one DAC
  215. Audiophile active crossover
  216. adding EQ without screwing up sound; few questions...
  217. SSTART Pcb and power supply project
  218. Help with a simple envelop detector filter. (averaging the signal)
  219. audio output switch? Monitor Controller
  220. Very simple volume control with IR remote
  221. JFETs and MOSFETs biasing questions
  222. I need advise on audio mixing boards?
  223. pre amp output
  224. OPA134 Amp Help
  225. OPA134
  226. Capacitors voltage rating
  227. Capacitors voltage rating
  228. attenuation on dac output with U-pad
  229. passive preamp
  230. preamp necessary?
  231. Will phono pre > passive pre > amp work well enough?
  232. 60Hz hum problem, please help
  233. distortion cancellation for diode limiter
  234. electret mic preamp for micro ADC
  235. Understanding "Voltage - Input Offset" Parameter
  236. Schade MOSFET + Feedback Line Amp
  237. Preamp or receiver?
  238. Sony BX-270 Datasheet Wanted
  239. Classe Audio DR6 Bias
  240. Dual gang potentiometer for 'mixer'
  241. Aikido Preamp Bass & Treble Controls
  242. Tried active crossover, mean hum...
  243. How to use TDA7439 for center and subwoofer
  244. Active notch filter
  245. simple pre amp volume control with seperate mono out
  246. Help me wire up my SUT correctly (Tamura TKS-27)
  247. How can I split a mixer bus?
  248. Beau's Bias Circuit Schematic
  249. What should be included in a subwoofer lowpass filter?
  250. Potentiometer volume control treble loss bleed

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