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  1. The boring but essential line stage
  2. Tresham DR3 pre amp Servicing
  3. Adding Remote Volume Control
  4. Line Level Crossover needed: to DIY or not
  5. +/- DC instead of +/- AC?
  6. CFP Unity Gain Buffer
  7. Preamp recommendation for Millett DCPP amp
  8. A/D Converter Driver - Active bandpass filter
  9. How to connect 3 mixers to 1 DSP
  10. Help with Millennia PRE AMP
  11. Balanced to unbalanced wiring help
  12. Forte 2 preamplifier power supply
  13. Promitheus TVC rebuilding
  14. Tone control schematic
  15. Active (Baxandall) Volume Control for Single Supply
  16. Pin Confirmation
  17. Cut out in one channel on Yamaha preamps CX-800
  18. PS 4.5 schematic
  19. An unusual preamplifier with multiple outputs
  20. Split signal
  21. Decoupling a quad opamp
  22. Help calculating low pass filter frequency
  23. Hybrid transformer-pot volume control
  24. B1 Buffer with a bad channel - need help!
  25. My new preamp design: Arduino, 6 input selector, MDAC attenuator, IR etc
  26. pre-amp problem!
  27. Active subwoofer filter
  28. Crazy distortion problem with transformer and active filter (opamp / Sallen Key)
  29. Passive pre-amp
  30. Universal Integrated Preamplifier
  31. Does Muses 72320 have OPAMP inside chip or not?
  32. Cheap/simple relay/resistors attenuator for RPI
  33. Hybrid Borbely Follower/Buffer - Please Critique
  34. Line stage chassis layout
  35. Sanity check: input grounding scheme
  36. Graphic Equaliser SUPER QUIET
  37. Passive crossover design
  38. Suggestions for remote volume control
  39. Yamaha C65 - Repair: Burnt Board
  40. Audio/MIC 3.5mm to 3.5mm TRRS (mic wiring?)
  41. solid state buffer
  42. Best DIY tube preamp question
  43. Advice On Gain/Loading Switch Implementation Phono
  44. LPF on signal path
  45. Two chases preamp configuration question
  46. Muses 72320 dual mono unbalanced configuration question
  47. OPA2134 preamp
  48. Passive Sum two signals - Resistor Value Help
  49. Subwoofer phase shift
  50. PrimaLuna; Phonologue board subst.
  51. What is equalizer in practice ?
  52. X-over help - Will this setup work?
  53. Preamp board suggestions for Hypex UCD3XMP module
  54. Jfet buffers online.
  55. Musical Fidelity "The Preamp" - any good ?
  56. 1 PRE-OUT splitter to 2 AMPS
  57. Joining RCA inputs or splitters and quality
  58. Possible tube (almost) phono preamp design
  59. Chromecast Audio + Airplay as analog source: Can I use a Y-splitter?
  60. Preamp + headphone amp total gain
  61. Help with mixer using MCP6271 op amp
  62. Opinions on this passive pre schematic
  63. How to Wire Selector Switch & Vol Control
  64. Volume control: altering gain instead of attenuator? Good or bad?
  65. My first OPamp preamp PCB - few questions.
  66. Buffer the buffered filter?
  67. Op-Amp Circuit Components: Any Ideas About This Circuit Section's Function?
  68. preamp question/buffer scematic with muses 72320
  69. Horrible Freq Resp from my MX110
  70. Input/pass-through switch
  71. Salas DCG3 preamp (line & headphone)
  72. Phase Linear 2000 Pre-amp overhaul
  73. Rotel RTC 850 Problem
  74. Cabre AS45 active crossover
  75. Preamp causing distortion
  76. discrete preamp/gain module recommendation
  77. 1 transistor 3 band tone circuit, will it work?
  78. BPBP starter help
  79. Hi Freq rolloff with ne5532 based unbalancer
  80. Crossover Rebuild Advise
  81. Perreaux SM-2 need help with output transistors
  82. Crossover conversion
  83. Need finding simple high impedance pre-amp to boost signal to Schmitt Trigger circuit
  84. remote volume control
  85. 2SK932 Buffer
  86. Please help with cap orientation.
  87. Single Supply 2-way active XO
  88. Neve 2254/E troubleshooting
  89. Need help with wiring a stepped atteunator
  90. What is the preferred MF X-10D clone?
  91. G.A.S Goliath
  92. Popping noises in Thiel CS3.5 Bass EQ??
  93. The distortion this preamp, is it fake?
  94. Volume Control use Dual 8-BIT/12-BIT DAC - I don't understand how it works
  95. DBX Driverack 4820
  96. Simple & portable mixer with 6 analog inputs
  97. Averaging PGA2320 outputs in mono configuration
  98. volume and tone control at same time
  99. AC coupling and hum question
  100. Butterworth series to Linkwitz-Riley Calculation
  101. CS4398 - Output Stage
  102. Any Discrete CFA Opamp?
  103. Pre-amplifier circuit not working despite attempts to fix it
  104. Opamp survey
  105. Article - 2 New and Improved AVC Topologies + Full Pre-Amplifier
  106. Passive vs Direct
  107. Active Crossover... help me wrap my head around this.
  108. Help with VU meter amplification made of an Ampere Meter
  109. Multi-purpose dual op-amp PCB design
  110. Relay volume control and input kit?
  111. Need advise about active crossover routing
  112. Pot Noise
  113. balanced vs. unbalanced
  114. Defective PGA2311 preamp display screen
  115. which preamp kit ?
  116. Volume control - Pass Camp Amp
  117. Preamp between Boozhound phono and ACA amps
  118. A hum problem
  119. Advice on preamp+tone kit or IC for use with ClassD board?
  120. Advice PreAmp <$400
  121. OPA627 Preamp Dynamic Crosstalk Issue
  122. Audio Limiter with JFET Class-A
  123. Preamp problem
  124. Cheap IC-based remote volume control kit
  125. Notch filter in balanced configuration between Amp and Pre Amp
  126. Maya R2R connection advice
  127. Following a Technics SU-9070
  128. Willow II
  129. The THD+N of passive preamps
  130. Investment volume potentiometer
  131. Active filter for fullrange: where do you need op amp buffers?
  132. Advice on Attenuators
  133. effects loop insert for mixer
  134. Battery powered active x-o. To decouple or not to decouple?
  135. Pre-amp amplifier driving capacity
  136. DIY DJ Mixer
  137. 70s Pioneer SR202 spring reverb - power issues
  138. Verify my high pass filter wiring for me?
  139. DIYINHK AD1862 I/U stage suggestions.
  140. Simple remote volume control (controlled through arduino)
  141. Does this passive preamp exist?
  142. Peak to peak
  143. Recommandations for electrolytic capacitors / preamp recap
  144. Will a capacitor high pass filter interfere with BSC circuit?
  145. Anyone know anything about Analog Devices B100?
  146. Capacitors wired in Series vs. Parallel - Please verify my understanding
  147. Signal to chassis ground query
  148. Mark Kelly DC motor controller advice required please
  149. Transformers to buffer PLLXO??
  150. triangle buffer for unbalancing?
  151. where are decoupling capacitors required
  152. Preamplifier recap: voltage values
  153. Simple mixer project (one mic, one line inputs)
  154. Analog combiner vs digital summing?
  155. Balanced or Unbalanced
  156. AK4113 automatic inputs or?
  157. Mark Levinson 380s PreAmp Schematic needed
  158. Moscode Super IT - schematics? power supply?
  159. AES article on the ultimate active crossover
  160. Attachment identification
  161. MiniDSP 4x10 HD Measurements
  162. Volume pot roughness
  163. Distortion in a Tone Control
  164. Remote Control for the BPBP
  165. Looking for standalone VU meter
  166. Logitech Ultimate One Compatible Potentiometer
  167. Ways to sum stereo to mono before the power amplifier?
  168. What's the benefit of a balanced floating line driver anyhow?
  169. Capacitor and Resistor choice for OpAmp line tap
  170. Rotel rsp 976 memory capacitor problem
  171. Triaxial interconnects
  172. 2.1 Channel Preamplifier?
  173. Opamp on battery
  174. single supply buffers
  175. 10kohm series/shunt 23 position resistor attenuator.
  176. Low cost Arduino based total amp control
  177. need advise to optimise my OPamp preamplifier
  178. Filter design
  179. Convert stereo Speaker Level to mono Speaker Level?
  180. Hovland HP100 line pre amp
  181. Neurochrome Differential preamp build
  182. Ribbon cables and audio
  183. Volume pot value
  184. Stereo Coffie 3 Input LDR preamp setting up
  185. parallel opamp?
  186. Advice on troubleshooting TK Audio The Strip - Distorts after ~100sec
  187. Question about LM4562 preamp (SC 08-07)
  188. Chinese sub filter, any good?
  189. EZ1073 build
  190. Arduino CPU for the PGA2311 preamp
  191. how to build a butterworth filter
  192. mercury switched input selector
  193. Cheap Chinese active X-O
  194. Restek Fantasy
  195. Anyone knew this pre
  196. Unusual Balanced audio distribution Question
  197. Potentiometer value
  198. Transforms using Sallen and Key topology
  199. How useful is this DSO 138 scope kit?
  200. What to do with unused opamp pins?
  201. Creating Virtual +/- PSU for Subsonic Filter
  202. Retrofitting Old Preamp with Motorized Volume Control
  203. baxandall differences
  204. LM3914 input selector idea
  205. Need help with "my" Simple LF and HF Shelving Preamp
  206. Problem with low-level hum.
  207. Simple Passive 3 Band EQ with Sweepable Midrange
  208. Personus acp 88
  209. 2 Channel Mixer Circuit
  210. Passive Line Splitter question
  211. Attenuator pad question
  212. Advice on what to use for a proper line level preamp for use with active Xover and EQ
  213. 7193->6BX7 Push-Pull Aikido Preamp
  214. Looking for a schematic for a Presonus ACP88 Compresser limiter
  215. XLR to DIN adapters grounding
  216. Tone Controls (probably unnecessary long)
  217. +4Bu to -10dBv and vice-versa
  218. Dead OCM 55...
  219. Lite Audio MV-01 / MV-06 remote controlled volume/input selector
  220. Passive tone control
  221. Concrete listening review of "his master's noise" Phono Pre?
  222. Riaa expermentation....
  223. Unbalanced RCA > Balanced XLR Pre-Amp
  224. I was Inspired By this Forum
  225. VCA That2180
  226. Belles DMC Preamp Restoration
  227. Standalone Music Streamer / Receiver
  228. NE5534N limitations for balanced input
  229. Programable Active Analogue Crossover
  230. Sony EV-310 Videocorder schematics
  231. Lpad eq
  232. Cambridge audio Azur 840E Schematic, Service Manual
  233. Trying to make a Balanced line input on LM3886 chipamp using ina134. HELPPP!!!
  234. OPA2604 - oscillation problem
  235. breadboard ESD P06 Preamp not amplifying
  236. AD 797 Preamp
  237. Preamp/input frequency response
  238. Mixer inputs
  239. My Borbely All-Fet Preamp with Subbu
  240. inductor output power amp
  241. 2 Questions, Connecting Line Level only sub to Stereo, PC Audio Analyzer Software
  242. NE5532 Harmful oscillation
  243. Instrumentation amplifier
  244. low noise 748 op amp replacement
  245. high pass filter and transformer
  246. Design for balanced tone control
  247. 2 + 1, variable state bi-amping VS steep low pass subwoofer
  248. Is 5m rca lead death
  249. Low pass filter with very less settling time
  250. 2.1 preamp (Struggling)

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