- Music Angel Amplifiers
- MM Phono stage (kit?) for tube newbie
- Russian tube dealer?
- STA1 + amp vs K-12M
- cheap ebay KT88 amp
- Tubes at low +B...
- Converting a yarland amp to drive headphones
- Starting a component system
- Really elementary question about caps.
- Tube newbie with Scott 299B
- 12AV7- 5965 Vs 12AY7
- PX25 tubes in a 300B Amp?
- help with a choke.
- 60Hz buzzing
- nuvistor bias with 18V ?
- ground bus for inputs on preamp - what's best?
- Voltage drop of various regulators in dc regulated power supply for preamp
- Does anyone recognise this tube amp?
- Entry level tube amp
- Anyone build/use 6BG6G?
- KT-77 Blues
- Dynaco Information MArk II Required
- tube test numbers - what do they mean?
- foolish notion, 12GN7 model?
- First-Timer Doubts: K-12 or Gainclone?
- Eico ST70 Rebuild / Upgrade
- More power in this
- Help modifiying schematic
- Simple Variable Tube Power Supply
- bias voltage vs bias current
- All the Bias options
- 6N6G looks like a great audio tube. . .
- Variable bias
- Tube amp on a budget
- tung sol
- How cool is tube deep cooling?
- Modified Fender Deluxe - Constant Current Phase Splitter
- 12B4 Equivalents?
- KT88 pp triode control grid resistor????
- Duncan Amps spice model docs...
- Hum in Legend amp
- Which do you prefer - EL84 UL PP or EL34 Triode PP - and why?
- Mullard high speed tester
- Joining two NCT transformers
- Stereo Driver PCB for PP Amp (EL34/KT88)?
- Tube Integrated Amp Kit Project
- 866A transient over-current capability?
- 6HS8 tubes for volume control
- cathode for plate ccs ?
- Broken Tube pin guides
- I need a 120v ct transformer... Where to look?
- Best production EL34?
- 6DJ8 or 12AT7
- 6L6 Single Ended Flea Amp?
- Se Tranny used on Parafeed!!!
- Hammond 270 series power transformer?
- 6aq5.......6v6.......
- 6N1 substitution with 6922
- driving 845 push-pull with a signal from a 300B SE stage
- Recommend a schematic for a Moving Coil head amp?
- Tube Buffer 6J1 / 5654 (6AK5)
- question about 6Av5ga tubes
- Toroidal SE transformers
- Calling MR. Tubelab! 6W6GT?
- Triode Trick
- SE 300B or PP KT88 amps?
- perhaps an INSANE query...
- Possible to estimate transformer specs?
- 9 pin replacement sockets
- Bench PSU
- Need help to make a correct 83 (merc.vapor.rect) SS replacement.
- Joke of the day
- $300 tube amp budget. Which Amp??
- Simple Linestage for 27 or 1H5?
- Foreplay III pre amp
- Fixing this 100TH
- I have some 5654
- Multisegment capacitor replacement help.
- Amplifer calculation
- Auto Bias?
- Se KT88 with Quad ESL
- Parts from Salvage
- power supply question.... too many Volts?
- Heathkit A7E Conversion to Guitar
- Now wouldn’t this make an awesome monoblock.
- Please,help me for schematics!!
- Kofi Annan in: "Open for Suggestion"
- What connector for 300vDC DOMESTIC environment?
- looking for help in transformers.
- problems with 805 tubes
- Audio Research D-90
- Replacing a 12AU7 in a cathode-follower.
- Original Dynaco 70 circuit mods/upgrades?
- is there a power supply unit for prototyping?
- Power Supply Design and Blocking
- OTL questions
- PP- which input/splitter topology??
- Cathode feedback and DHTs
- How should Dick Olsher Blue Velvet measure??
- Info on Melos MA-111?
- Aikido with dual personality
- Making a hole for AC socket in a chassis
- Liteaudio LS31 preamp pcb
- Thoughts on Quad II output topology
- HF-85 Rebuild advice
- Cheap Williamson amp kit
- Mr'Liang audio amplifiers
- plate ccs
- DC Huuuummmmmm
- Hey Gingertube - trying to debug Baby Huey
- question about nOrh SE 9 amp for FE207E
- 6N1P or EF86 for bass guitar preamp?
- Arc D150
- help identify this "cleartop 6550"
- Cheap emergency gold sockets
- Is Western Electric for Real? KT88 Scam?
- Russian 635P?
- Swinging Choke or Smoothing Choke
- Amp de-bugging
- SMPS for B+ from PC PS
- Placement of tone stacks
- Rectify AC to DC for heating
- KT88 in class B
- 6FE5 Ultralinear?
- OPT -the good, the bad or the ugly ??
- Switching power supply for tube-pre
- Using a zener to drop plate+screen voltages
- Will this circuit work?
- Ei 6CW5, any users?
- Simple tube preamp?
- push-pull and primary impedance
- DIY : SWR Interstellar OverDrive (bass preamp)
- sound valves m-40 schematics
- series connection of filament in push pull output stage
- Has anybody built this amp?
- Red Light District Amp Screen Reg
- AEG rectifier
- Gm emulator for calibration
- Greetings and a couple of questions
- Tubes in a chip amp power stage??
- Yaqin MC-10L Preamp Tubes
- Sound of paralleld EL84
- Preamp Question
- WTH -- UL back to triode connection
- $139 tube amp but cant remember where i saw it...
- better 6au6 alternative
- type 40 triode curves
- Cap size for Hg Rectifiers
- Anybody have experience building an OTL amp?
- measuring hum
- Nytone SA2000
- Inter stage iron in High End
- very peculiar psu problem
- 12A6 Healthkit A7 Amp
- testing a 13E1
- JE Labs / Arnold Cruz 2A3 amp - Q
- 5842 grounded grid
- Russian RF Double Tetrodes
- Opinions or inputs on Altec 1570B amplifiers
- Chinese EL34 amp to modify
- GE 97F cap polarity ???
- 6C8G phase inverter
- Shall I disassemble this ampex for parts?
- Power Amp Build from Eico ST70 - Negative Feedback Question
- ECC83 cathode grounded = awesome overdrive (?!?!?)
- Looking for a Balanced Mic Preamp w 12AX7
- Does anyone has a T.A.C.-34 or a T.A.C.-88 schematic?
- Conrad Johnson PV10L Phono stage DIY
- NEW KT66's
- Edcor outputs?
- Schematic Comment on 'Principles of Power" book ??
- what kind of resistor is this?
- stereo push pull amp one heater supply for power tubes
- Building new GU-50 stereo amp...
- Tubes and microphonics
- 829 or GU-29 audio amplifier schematics?
- Electrolytic types...
- Consonance t99 schematic/ minimax pre
- Useful Supplier of Transformers, Chokes, Chassis and other stuff
- Serious case of brain fry. You out there Thorsten?
- Upgrading a Beard P100 tubeamp
- Tube Amplifier with OT100
- bogen m120 schematic
- Question about Thorsten's Tube Phono Pre
- PP Output Trafo Measurement
- push pull balancing
- New issue Mullard Tubes
- Help on triode
- 5 Volt Damper Diodes?
- Please help diagnose preamp problem
- 6N1/6N3 substitution
- Cathode feedback and input impedance
- Optimal ripple voltage on b+ supply
- Setup suggestion between DAC-AH and ST-70
- Simple Low Voltage Tube Preamp?
- Anyone built this 100W GEC amp? How is the sound?
- Does anyone have VT150 schematic?
- Ignition Coil Toobe Amplifier
- Voltage swing of Heffa?
- All pentode PP amp?
- GZ34 anode load resistor calculation - help?
- Capacitor choice for attached schematic
- The sound of... tubes !
- All quiet on the SN front - recommended choice of tubes
- Moscode 600 hum/turn off thump
- Tube Tester Resto Basics
- Marshall 100v 8100U Guitar Amp Hums
- What's the simple killer tube amp? Anyone?
- Help - CFB in a KT88 SE amp
- Any Russian speakers here?
- 6av6 Diode use?
- Power Supply
- Choke rating for choke input duty
- drawing a loadline for a power stage EL34 tube.
- Experiencing problems to insert tubes
- Preamp signal wiring ideas ?
- el34PP circuit evaluation!!
- "Re-Forming" Caps on Old Tube Amp
- Gary Pimm website?
- Haltron (UK), Trigon (UK) and Ultron (germany) ECC83 tubes info request.
- Audio Research D150 bias setting
- Cathodyne phase splitter with CCS?
- Has anyone tried 2 x 6550 100W amp?
- modelling PSU for Aikido
- 27 head phone amp or.??
- New Chassis Fabrication Pics and Capacitor Question
- Replacing old caps in the SP8 pre-amp
- Tube choice for Class A2
- hybrid graetz in PSUDII
- 6C45P Spud
- Philips ECG 12AX7WA or GE 5751 ?? Opinions, please.
- Single Ended EL34 Amp
- Rp / Rk on Aikido preamp
- hum in amp!
- Looking for a 83 rectifier model
- Advice wanted on ebay SET amps
- Resistors for ultralinear-to-triode conversion
- Gary Pimm
- resistor values for lifting ground AND LED
- output transformer impedance choices
- Feedback disc recording amp
- 6bm8/ECL82 vs EL84
- B+ filter caps
- (Newbie) CSS Question
- 6P15P Tubes: Push Pull Possible?
- Tube X-ref list ??
- AVO tube tester spares
- Add gain before or after the phase splitter?
- ping SY: Red Light LED question
- Greinacher voltage multiplier