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  1. Clone Note LDR Attenuator
  2. Balanced PGA2311 volume control
  3. Passive preamp introduces hum
  4. Preamp, active
  5. Passive/active preamp (transformers, resitors)
  6. Monitoring B1 volume pot value
  7. Reverse log multi-position switch with 6 dB gain steps
  8. Ferrite bead between input and circuit ground
  9. New LDR for Rapberry PI
  10. db gain vs input sensitivity
  11. Broskie Enhanced-PSRR Hybrid Phono MM Stage
  12. Which way - trimmer resistor?
  13. Adding a buffer to Self's zero-impedance balanced output
  14. RCA Attenuator
  15. Analog way to Highpass my LS3/5a
  16. tube preamp buffer with distorted sound
  17. How to get started, looking a "Bruce Moore" sound.
  18. Recommendations for volume control and source selection?
  19. Source for Reel Motors (for Rewind and Fast Forward in 2-Motor Tape Decks)
  20. Buffered Preamp or Passive Volume Control?
  21. 3.5mm jack to rca - what conductors?
  22. THD and noise in audio circuits
  23. boosting output level
  24. Type of Switch
  25. service manual for Cambridge Azur 840E preamp
  26. Transformer source and load impedance question
  27. Line-Level Cable Alternatives
  28. Pioneer C-91 Preamplifier recap
  29. What 'sounds' worse, noise or distortion?
  30. How to determine what value Pot (attenuator)???
  31. Flea Market Score: NAD 116 Preamp
  32. Confusing problem with diy phono stage. Ground loop?
  33. Z-2300 Generic Logitech Control Pod Newbie Help
  34. Active or passive subwoofers filter for vintage JBL?
  35. Preamp 240v out socket
  36. Help with converting unbalanced to balanced using transformers (1:1)
  37. Not the BPBP Phonoclone - fully balanced MC RIAA
  38. Stereo to mono with switch: Do my circuits work?
  39. Wall mount line level volume control
  40. mono summing into monitor line in
  41. isotope Preamp
  42. Digital switcher for analog audio signal (e. g. electronic input selector for an amp)
  43. RIAA Phono filter.
  44. PLLXO WiringQuestion
  45. Lundahl Transformers for balancing output
  46. Impedance matching question.
  47. SSM2019 Mic Pre Lows Rolloff at 120 Hz - Why?
  48. Subwoofer filter help?
  49. Hafler DH101 film caps
  50. Preamp with NE5532
  51. Question about using a JT11P1 to convert unbalanced to balanced.
  52. virtual earth mixer NE5534 problem
  53. NAD S100 output impedance
  54. Fully-Featured Fono Faceplate ( Phono Preamp )
  55. Correcting offset through DC servo
  56. Bluetooth noise through input
  57. miniAVC - miniaturized Analog Volume Control
  58. PGA2311 and CS3310 Performance vs Input Impedance
  59. confusing symbol in fader send diagram
  60. Best Selector Switch? ..Advice plz!
  61. *HELP* NE5532P Tone Control Circuit
  62. Running 3+ way speaker setup with only two AMPs & a multi-channel computer sound card
  63. INA217 $5 preamp questions
  64. Single Rail Active Xover
  65. Help connecting microphone to preamplifier to speaker
  66. dbx 286s with hum/hiss when turning on phantom power
  67. Line level power-GND and signal-GND?
  68. Need PreAmp to match new amp
  69. Coupling Caps at Phono Input
  70. Behringer Pot Replacement
  71. Which lm3916 circuit to build?
  72. ESI gigaport soundcard output buffer question
  73. Help with DIY pre amp recommendations
  74. Modification/upgrade posibilities RCA input board tube line stage
  75. Audiolab pre amp advice needed. Any good?
  76. Volume Potentiometer Sizing and setup
  77. Balanced Cable Capacitance -- Conductor to Conductor or shield to conductor?
  78. Crossover hints
  79. H1ot signal into mic input?
  80. DIY interconnect with LP filter built-in?
  81. Can someone help to explain this op amp balanced output?
  82. Any Interest in BJT and FET DOAs (Discrete Op Amps) in 2520 format?
  83. Euridice line preamp
  84. Simulation programs
  85. Simplest 1st order high pass and low pass filter
  86. Help with designing an active, balanced input mixer with crossfader
  87. Volume control signal level
  88. Where to adjust regulator voltage?
  89. DC blocking cap
  90. Channel unbalance in active crossover
  91. line level attenuator calculation
  92. Simplest Passive Preamp design
  93. Changing a pot's value with parallel resistors
  94. Preamplifier for Rotel RHB 10
  95. High DC offset on preamp
  96. passive line level high pass crossover
  97. High pass filter for line level info needed
  98. Problem with Opera CY222 line preamp
  99. broskie triangle buffer not working
  100. BGW model 203
  101. Phone Mic Input Bias voltage effect
  102. Apex P30+ A class PSU...questions?
  103. Circuit for subwoofer crossover 25Hz to 250Hz
  104. Cascode buffer
  105. Can Someone please verify this circuit ?
  106. Signal/power path questions
  107. Linkwitz Transform... lowpass?
  108. how to design very stable, DC accurate LP filter with lots of gain?
  109. Relays in the volume control, reed or not reed (and other things)
  110. Technical Question 420ohm output preamp to 600ohm tube amp
  111. Building a Douglas Self design preamp
  112. Crossovers for beginners
  113. Pre-amplifier for electret mic and Line-in audio sources
  114. Current feedback amplifier circuit (preamp/headphone amp)
  115. tda7439 filter design
  116. Bridging Amps using a balanced line driver
  117. OPA2134 current consumption: more advice needed
  118. Can someone help a rookie with a DIY monitor controller?
  119. alps pot for passive volume control
  120. Yamaha c2 pre transformer question
  121. Opamp buffer @ active crossover input?
  122. opamp inversion?
  123. D-12 Hybrid LV Preamp!
  124. simplest discrete really-unity gain buffer
  125. MM28 phono preamplifier
  126. 600ohm passive xover for multiamp
  127. H-bridge killing transistors
  128. DAC balanced & Unbalanced output to bridged amp input
  129. Subsonic Filter Troubleshooting
  130. Which Graphic Equalizer Circuit Topology provides best Sonic Quality ? "Constant-Q" ?
  131. Recommend me a good quad soic opamp ?
  132. The boring but essential line stage
  133. Tresham DR3 pre amp Servicing
  134. Adding Remote Volume Control
  135. Line Level Crossover needed: to DIY or not
  136. +/- DC instead of +/- AC?
  137. CFP Unity Gain Buffer
  138. Preamp recommendation for Millett DCPP amp
  139. A/D Converter Driver - Active bandpass filter
  140. How to connect 3 mixers to 1 DSP
  141. Help with Millennia PRE AMP
  142. Balanced to unbalanced wiring help
  143. Forte 2 preamplifier power supply
  144. Promitheus TVC rebuilding
  145. Tone control schematic
  146. Active (Baxandall) Volume Control for Single Supply
  147. Pin Confirmation
  148. Cut out in one channel on Yamaha preamps CX-800
  149. PS 4.5 schematic
  150. An unusual preamplifier with multiple outputs
  151. Split signal
  152. Decoupling a quad opamp
  153. Help calculating low pass filter frequency
  154. Hybrid transformer-pot volume control
  155. B1 Buffer with a bad channel - need help!
  156. My new preamp design: Arduino, 6 input selector, MDAC attenuator, IR etc
  157. pre-amp problem!
  158. Active subwoofer filter
  159. Crazy distortion problem with transformer and active filter (opamp / Sallen Key)
  160. Passive pre-amp
  161. Universal Integrated Preamplifier
  162. Does Muses 72320 have OPAMP inside chip or not?
  163. Cheap/simple relay/resistors attenuator for RPI
  164. Hybrid Borbely Follower/Buffer - Please Critique
  165. Line stage chassis layout
  166. Sanity check: input grounding scheme
  167. Graphic Equaliser SUPER QUIET
  168. Passive crossover design
  169. Suggestions for remote volume control
  170. Yamaha C65 - Repair: Burnt Board
  171. Audio/MIC 3.5mm to 3.5mm TRRS (mic wiring?)
  172. solid state buffer
  173. Best DIY tube preamp question
  174. Advice On Gain/Loading Switch Implementation Phono
  175. LPF on signal path
  176. Two chases preamp configuration question
  177. Muses 72320 dual mono unbalanced configuration question
  178. OPA2134 preamp
  179. Passive Sum two signals - Resistor Value Help
  180. Subwoofer phase shift
  181. PrimaLuna; Phonologue board subst.
  182. What is equalizer in practice ?
  183. X-over help - Will this setup work?
  184. Preamp board suggestions for Hypex UCD3XMP module
  185. Jfet buffers online.
  186. Musical Fidelity "The Preamp" - any good ?
  187. 1 PRE-OUT splitter to 2 AMPS
  188. Joining RCA inputs or splitters and quality
  189. Possible tube (almost) phono preamp design
  190. Chromecast Audio + Airplay as analog source: Can I use a Y-splitter?
  191. Preamp + headphone amp total gain
  192. Help with mixer using MCP6271 op amp
  193. Opinions on this passive pre schematic
  194. How to Wire Selector Switch & Vol Control
  195. Volume control: altering gain instead of attenuator? Good or bad?
  196. My first OPamp preamp PCB - few questions.
  197. Buffer the buffered filter?
  198. Op-Amp Circuit Components: Any Ideas About This Circuit Section's Function?
  199. preamp question/buffer scematic with muses 72320
  200. Horrible Freq Resp from my MX110
  201. Input/pass-through switch
  202. Salas DCG3 preamp (line & headphone)
  203. Phase Linear 2000 Pre-amp overhaul
  204. Rotel RTC 850 Problem
  205. Cabre AS45 active crossover
  206. Preamp causing distortion
  207. discrete preamp/gain module recommendation
  208. 1 transistor 3 band tone circuit, will it work?
  209. BPBP starter help
  210. Hi Freq rolloff with ne5532 based unbalancer
  211. Crossover Rebuild Advise
  212. Perreaux SM-2 need help with output transistors
  213. Crossover conversion
  214. Need finding simple high impedance pre-amp to boost signal to Schmitt Trigger circuit
  215. remote volume control
  216. 2SK932 Buffer
  217. Please help with cap orientation.
  218. Single Supply 2-way active XO
  219. Neve 2254/E troubleshooting
  220. Need help with wiring a stepped atteunator
  221. What is the preferred MF X-10D clone?
  222. G.A.S Goliath
  223. Popping noises in Thiel CS3.5 Bass EQ??
  224. The distortion this preamp, is it fake?
  225. Volume Control use Dual 8-BIT/12-BIT DAC - I don't understand how it works
  226. DBX Driverack 4820
  227. Simple & portable mixer with 6 analog inputs
  228. Averaging PGA2320 outputs in mono configuration
  229. volume and tone control at same time
  230. AC coupling and hum question
  231. Butterworth series to Linkwitz-Riley Calculation
  232. CS4398 - Output Stage
  233. Any Discrete CFA Opamp?
  234. Pre-amplifier circuit not working despite attempts to fix it
  235. Opamp survey
  236. Article - 2 New and Improved AVC Topologies + Full Pre-Amplifier
  237. Passive vs Direct
  238. Active Crossover... help me wrap my head around this.
  239. Help with VU meter amplification made of an Ampere Meter
  240. Multi-purpose dual op-amp PCB design
  241. Relay volume control and input kit?
  242. Need advise about active crossover routing
  243. Pot Noise
  244. balanced vs. unbalanced
  245. Defective PGA2311 preamp display screen
  246. which preamp kit ?
  247. Volume control - Pass Camp Amp
  248. Preamp between Boozhound phono and ACA amps
  249. A hum problem
  250. Advice on preamp+tone kit or IC for use with ClassD board?

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