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  1. Digital balance control - how fine dB steps?
  2. NE5532 circuit.What to change to increase amplification
  3. Mixer eq mod
  4. Another INA217 Mic Pre - board layout; analysis and enclosure templates in the works
  5. Input transformer q for tube preamp
  6. Switchable opamp gain
  7. MiniDSP with Passlabs Aleph J Gain Setting Help
  8. Who knows the OPA1632 well?
  9. A cascode, two stage constant current discrete pre-amp circuit diagram
  10. Troubleshooting Marshall Leach preamp
  11. PGA2311 / OPA1632 Balanced Level Controller
  12. Discrete Power Return & Signal Return For Breakout-Box
  13. The "Hundy" - A compact Preamplifier
  14. NE5532 Buffer
  15. Pop/click free HW-based relay attenuator V2
  16. LineOUT AK4490
  17. Pots value of an old Famco Nuance preamp ?
  18. B&k components cs115 preamp noise?
  19. Noise in audio signal
  20. A preamp that will the rca line level and convert to true XLR level.
  21. Experience with TI SLOA042
  22. Reducing gain in a DRV134
  23. Simple two transistor feedback circuit problem
  24. buffered preamplifier
  25. mASP: Modular Analog Signal Processor
  26. Newbie Question: Is it possible to use a TPA3116 amp with no volume control?
  27. PGA2311 controlled by an Arduino nano
  28. Output terminations -- pros and cons?
  29. DRV134's single end to balanced noise analysis?
  30. PGA2311 - To buffer, or not to buffer?
  31. preamp that can drive 2.2 kohm
  32. Crossover for Bluetooth 2.1 System
  33. Audio Grade Relay
  34. Phono Preamplifier Grounding Scheme for Low Hum, Noise + Safety
  35. Primare Pre 30 trouble
  36. My Hypex UCD400 OEM Buffer
  37. Arduino controlled Volume, bass, treble, input select
  38. Looking for op amp to boost line level signal
  39. Choosing connections methods between preamp and poweramp
  40. Multiple Butterworth filter question
  41. Phono stage noise when cartridge connected
  42. balanced line out driver
  43. Schematic to pcb Simple preamp LM358
  44. HT Bypass Circuit
  45. Can I use a Darlington Pair for an Input Buffer
  46. Calculating Voltage Divider (pot) Impedance...
  47. TGMC - a modular control pre-amplifier
  48. Index for: Arduino based LDR volume and source selection controller
  49. Pass through preamp.. mod an Irig?
  50. Marantz SR5400 as preamp?
  51. Low Gain Preamp Kit
  52. Audio coupling: 100nF in parallel with 100uF
  53. Deriving subwoofer channel from Lt & Rt
  54. Baxandall gain control according TI tidu34 certified design
  55. Any Good Chinese Built 3 Way Active
  56. Choosing resistor / capacitor values
  57. Op Amp Advice
  58. Best way to split RCA
  59. In general, the audio volume can be controlled by a simple VR (Variable Resistor)?
  60. Active all-pass filter design questions
  61. adding balanced output capability to my unbalanced 4-ch gain stage circuit
  62. Strange spikes on sine, square and triangle?
  63. Audio transformers
  64. Low Pass Filter consideration
  65. OPA627 and possible ESD damage
  66. Wright WLA12 / WLA12A Line Stage Topology
  67. Remote Volume AND Balance control
  68. Very Simple Single Stage Op Amp Preamp
  69. phase correction filter
  70. Clone Note LDR Attenuator
  71. Balanced PGA2311 volume control
  72. Passive preamp introduces hum
  73. Preamp, active
  74. Passive/active preamp (transformers, resitors)
  75. Monitoring B1 volume pot value
  76. Reverse log multi-position switch with 6 dB gain steps
  77. Ferrite bead between input and circuit ground
  78. New LDR for Rapberry PI
  79. db gain vs input sensitivity
  80. Broskie Enhanced-PSRR Hybrid Phono MM Stage
  81. Which way - trimmer resistor?
  82. Adding a buffer to Self's zero-impedance balanced output
  83. RCA Attenuator
  84. Analog way to Highpass my LS3/5a
  85. tube preamp buffer with distorted sound
  86. How to get started, looking a "Bruce Moore" sound.
  87. Recommendations for volume control and source selection?
  88. Source for Reel Motors (for Rewind and Fast Forward in 2-Motor Tape Decks)
  89. Buffered Preamp or Passive Volume Control?
  90. 3.5mm jack to rca - what conductors?
  91. THD and noise in audio circuits
  92. boosting output level
  93. Type of Switch
  94. service manual for Cambridge Azur 840E preamp
  95. Transformer source and load impedance question
  96. Line-Level Cable Alternatives
  97. Pioneer C-91 Preamplifier recap
  98. What 'sounds' worse, noise or distortion?
  99. How to determine what value Pot (attenuator)???
  100. Flea Market Score: NAD 116 Preamp
  101. Confusing problem with diy phono stage. Ground loop?
  102. Z-2300 Generic Logitech Control Pod Newbie Help
  103. Active or passive subwoofers filter for vintage JBL?
  104. Preamp 240v out socket
  105. Help with converting unbalanced to balanced using transformers (1:1)
  106. Not the BPBP Phonoclone - fully balanced MC RIAA
  107. Stereo to mono with switch: Do my circuits work?
  108. Wall mount line level volume control
  109. mono summing into monitor line in
  110. isotope Preamp
  111. Digital switcher for analog audio signal (e. g. electronic input selector for an amp)
  112. RIAA Phono filter.
  113. PLLXO WiringQuestion
  114. Lundahl Transformers for balancing output
  115. Impedance matching question.
  116. SSM2019 Mic Pre Lows Rolloff at 120 Hz - Why?
  117. Subwoofer filter help?
  118. Hafler DH101 film caps
  119. Preamp with NE5532
  120. Question about using a JT11P1 to convert unbalanced to balanced.
  121. virtual earth mixer NE5534 problem
  122. NAD S100 output impedance
  123. Fully-Featured Fono Faceplate ( Phono Preamp )
  124. Correcting offset through DC servo
  125. Bluetooth noise through input
  126. miniAVC - miniaturized Analog Volume Control
  127. PGA2311 and CS3310 Performance vs Input Impedance
  128. confusing symbol in fader send diagram
  129. Best Selector Switch? ..Advice plz!
  130. *HELP* NE5532P Tone Control Circuit
  131. Running 3+ way speaker setup with only two AMPs & a multi-channel computer sound card
  132. INA217 $5 preamp questions
  133. Single Rail Active Xover
  134. Help connecting microphone to preamplifier to speaker
  135. dbx 286s with hum/hiss when turning on phantom power
  136. Line level power-GND and signal-GND?
  137. Need PreAmp to match new amp
  138. Coupling Caps at Phono Input
  139. Behringer Pot Replacement
  140. Which lm3916 circuit to build?
  141. ESI gigaport soundcard output buffer question
  142. Help with DIY pre amp recommendations
  143. Modification/upgrade posibilities RCA input board tube line stage
  144. Audiolab pre amp advice needed. Any good?
  145. Volume Potentiometer Sizing and setup
  146. Balanced Cable Capacitance -- Conductor to Conductor or shield to conductor?
  147. Crossover hints
  148. H1ot signal into mic input?
  149. DIY interconnect with LP filter built-in?
  150. Can someone help to explain this op amp balanced output?
  151. Any Interest in BJT and FET DOAs (Discrete Op Amps) in 2520 format?
  152. Euridice line preamp
  153. Simulation programs
  154. Simplest 1st order high pass and low pass filter
  155. Help with designing an active, balanced input mixer with crossfader
  156. Volume control signal level
  157. Where to adjust regulator voltage?
  158. DC blocking cap
  159. Channel unbalance in active crossover
  160. line level attenuator calculation
  161. Simplest Passive Preamp design
  162. Changing a pot's value with parallel resistors
  163. Preamplifier for Rotel RHB 10
  164. High DC offset on preamp
  165. passive line level high pass crossover
  166. High pass filter for line level info needed
  167. Problem with Opera CY222 line preamp
  168. broskie triangle buffer not working
  169. BGW model 203
  170. Phone Mic Input Bias voltage effect
  171. Apex P30+ A class PSU...questions?
  172. Circuit for subwoofer crossover 25Hz to 250Hz
  173. Cascode buffer
  174. Can Someone please verify this circuit ?
  175. Signal/power path questions
  176. Linkwitz Transform... lowpass?
  177. how to design very stable, DC accurate LP filter with lots of gain?
  178. Relays in the volume control, reed or not reed (and other things)
  179. Technical Question 420ohm output preamp to 600ohm tube amp
  180. Building a Douglas Self design preamp
  181. Crossovers for beginners
  182. Pre-amplifier for electret mic and Line-in audio sources
  183. Current feedback amplifier circuit (preamp/headphone amp)
  184. tda7439 filter design
  185. Bridging Amps using a balanced line driver
  186. OPA2134 current consumption: more advice needed
  187. Can someone help a rookie with a DIY monitor controller?
  188. alps pot for passive volume control
  189. Yamaha c2 pre transformer question
  190. Opamp buffer @ active crossover input?
  191. opamp inversion?
  192. D-12 Hybrid LV Preamp!
  193. simplest discrete really-unity gain buffer
  194. MM28 phono preamplifier
  195. 600ohm passive xover for multiamp
  196. H-bridge killing transistors
  197. DAC balanced & Unbalanced output to bridged amp input
  198. Subsonic Filter Troubleshooting
  199. Which Graphic Equalizer Circuit Topology provides best Sonic Quality ? "Constant-Q" ?
  200. Recommend me a good quad soic opamp ?
  201. The boring but essential line stage
  202. Tresham DR3 pre amp Servicing
  203. Adding Remote Volume Control
  204. Line Level Crossover needed: to DIY or not
  205. +/- DC instead of +/- AC?
  206. CFP Unity Gain Buffer
  207. Preamp recommendation for Millett DCPP amp
  208. A/D Converter Driver - Active bandpass filter
  209. How to connect 3 mixers to 1 DSP
  210. Help with Millennia PRE AMP
  211. Balanced to unbalanced wiring help
  212. Forte 2 preamplifier power supply
  213. Promitheus TVC rebuilding
  214. Tone control schematic
  215. Active (Baxandall) Volume Control for Single Supply
  216. Pin Confirmation
  217. Cut out in one channel on Yamaha preamps CX-800
  218. PS 4.5 schematic
  219. An unusual preamplifier with multiple outputs
  220. Split signal
  221. Decoupling a quad opamp
  222. Help calculating low pass filter frequency
  223. Hybrid transformer-pot volume control
  224. B1 Buffer with a bad channel - need help!
  225. My new preamp design: Arduino, 6 input selector, MDAC attenuator, IR etc
  226. pre-amp problem!
  227. Active subwoofer filter
  228. Crazy distortion problem with transformer and active filter (opamp / Sallen Key)
  229. Passive pre-amp
  230. Universal Integrated Preamplifier
  231. Does Muses 72320 have OPAMP inside chip or not?
  232. Hybrid Borbely Follower/Buffer - Please Critique
  233. Line stage chassis layout
  234. Sanity check: input grounding scheme
  235. Graphic Equaliser SUPER QUIET
  236. Passive crossover design
  237. Suggestions for remote volume control
  238. Yamaha C65 - Repair: Burnt Board
  239. Audio/MIC 3.5mm to 3.5mm TRRS (mic wiring?)
  240. solid state buffer
  241. Best DIY tube preamp question
  242. Advice On Gain/Loading Switch Implementation Phono
  243. LPF on signal path
  244. Two chases preamp configuration question
  245. Muses 72320 dual mono unbalanced configuration question
  246. OPA2134 preamp
  247. Passive Sum two signals - Resistor Value Help
  248. Subwoofer phase shift
  249. PrimaLuna; Phonologue board subst.
  250. What is equalizer in practice ?

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