- What's this?
- Standby switch for Quad II?
- What Speakers Do Tube Lovers Used?
- RC-coupled stage using ˝ 6N1P
- What to build w/ Akai parts?
- 7189 in pentode mode?
- Finally. Music!!!
- Another tube radio
- Differential to single ended...
- Best Tube 4 Solid State
- Problem with Quicksilver amp
- cathode amp
- Wanted: 6922 / 6DJ8 Preamp Kit / Schematic
- How about a P-P DHP amp?
- simple, cheap, 6L6 amp? help
- 417A Line Amp
- Single end 6550 or KT88 amp Ideas please
- Simple cheap 2A3 stereo amp
- Triode Amps
- Audiopax 88 Power Amp
- Prefered type of components
- I found more junk!
- My Preamp
- Hum when volume is turned down
- Req. What does this parameter mean?
- Frank's Ultimate Tube Preamp.
- Mullard 5-20
- 156C... even cheaper now.
- Simple IT PP
- Dumb question: How do I increase Dp on this SET?
- Experiences with S&B102 TVC
- Melos High Current Triode
- Re-tubing Quickie M60 (EL34 quads)
- A new fashion tube design!
- mmm.... zero-bias class B twin triode amp
- 6SN7 redone
- Need some help with this...
- What tube is this?
- KT4040 Kit
- so here's how it sounds : (300b)
- Mullard 3-3
- shielding cans
- Help with common-cathode circuit.
- Hammond 125E improved?
- Separate power supply chassis- with a difference!
- 1St Tube Amp
- Help - tube radio
- Help newbie with tube-amp schematics
- This Guy is unbelivable!
- Strange filament behavour
- Triode curves for 6CA7, KT88 and 6550
- Well, tell me what you think ( 300b )
- More of Joel's preamp...
- data for 6V6 in triode mode?
- Help me design a pre with odd looking tubes
- Suggestions for top bal out tube pre?
- Plus biasing heater (220vdc above ground)
- Quicksilver 8417 tube install
- Help with R values
- With a bang and a flash - it works.....ideas anyone?
- Quad II eating valves?
- sunday daydreamin'
- Thrift store find
- New WE 300b's blue glow
- Current limit of EL84 grid?
- QuestionSSS about 300B circuit
- Help with new project...
- help needed from the 300b crowd!
- 1937 Gibson guitar amp
- Humming problem with 5687? SE amp design.
- QUAD II mains at 240VAC instead of 220VAC?
- monoblock vs. one chassis?
- EL 156 - what to do?
- Joel's 6SN7 preamp (photo)
- Newbee looking to build Valve Preamp
- The attraction of vacuum tubes / valves.
- What do with these tubes...
- looking to make simple distortion pedal
- Simple tube preamp...
- LCR RIAA AND TUBES.
- WTB Output Transformers
- 2A3 pp biasing schemes compared.
- 7199 glowing purple?
- Preamp has Neg waveform clip at 11.3 volts out
- Remote Controlled Tube Amp
- A few questions
- Using relays in high voltage circuits
- TDA1541 with passive filter
- tune 'em up - old russian radios
- Gas-coupled 6L6/6BG6-G SE
- 01aa?
- Gain for common anode....
- Too much capacitance in power supply?
- Aloha
- Gary P's Pre
- Instock designer in potential lawsuit!!
- Troubleshooting Problem in Tube Preamp
- 0.5ml of Snake Oil for $59
- Output impedance
- to DIY or not to DIY
- the OTHER tubes forum=yuck!
- 3A/110B into a LL1680 Preamp
- New output transformers for Quicksilver amplifier
- 2 output transformers in 1 amp?
- Parallel feed OT
- DIY Tube Microphone preamplifier
- 6M5 valve
- Can I use a 1/8 watt resistors here?
- toroid Transformer as power Transformer for tube
- Trying to find............
- Balancing output tubes by changing heater voltage.
- Push Pull Output Stage Question
- auto bias on a Quicksilver KT-88 amp
- SEPP for philips 800 ohm loudspeaker
- anyone tried 12HG7 as a driver ?
- Old tube amp
- Testing paper-in-oil capacitors
- need ´´quiet´´filament supply for 26
- New Guy w/my Foreplay
- Spice models for circuitmaker
- I need the Schematic of Audio Research ph3
- Audio Research SP9 guilty of screeching sounds!
- Humm
- Technics variation of Futterman SEPP.
- How low should PSU ripple voltage be in a preamp?
- Tube tester
- 6dn7
- Power supply Schematic Counterpoint SA -3000 Help!
- counterpoint sa-7(volume pot value)
- Tube amp equivalent to LDC?
- Pics of Foreplay Preamp
- Old Valco Amp Tube Problem
- Tube mixer design
- Battery bias?
- Phono amp for a beginner
- Low voltage Tube Schematic
- Audio Research MCP 33
- 6h30 dac output circuit wanted..anyone?
- 5Y3GT Question.
- Sovtek 6C45pi-E bias
- Cunningham/Radiotron RCA 58
- no connections at all!
- Thorsten's Chokeless Monkey 2a3
- No grid connection
- grid chokes
- Oh yeah, 7KY6
- Time to rock your world.
- Best way to connect 300B cathode
- #26 lineamp vers a 5687 which is best?
- Alu-foil electrostatic shield
- 6DJ8 cathode heater voltage question.
- All Tube Ccs.
- Slew Rate Limiting... continued.
- DC variacs?
- HV Valve Shunt reg.
- toroid Transformer as output Transformer for tube preamp?
- PP-1c as Ultralinear
- Hi/Review Design
- Help with a circuit
- My 6SL7, 2A3 SE design
- jack probs
- 6SN7 tubes
- 3 Electrode gas regulators
- Mod to an old radio
- Replacing a driver tube in an existing EL84 SE Amp
- 813 valves
- Acro TO-300 output transformer
- Anyone have a picture of the Silver Seven?
- good sound with cheapo chokes
- Questions about a choke
- max DC-current for an unknown PS- Choke?
- Availability of 6C33C tubes? I need some for OTL amps
- 7805 regulated 5V supply
- Setting Pentode Screen Grid Voltage
- More 6158/13D3
- Best PSU.
- Low power tube amp for headphones
- Basic question on 6922
- LM317 current regulator
- DHT Triode Amp Project
- tube preamp for Zen?
- online tube equivalent chart
- Help!! Right Channel Freq distorted.
- first design by me! need feedback
- ECL86 preamp?
- Regulator/Choke/Cap
- Request for valve pics...
- SS PSU without choke
- Double EL84 Push-Pull supply
- 12AU7 vs 12BH7 vs 6CG7
- What should i look for
- Quicksilver Tranny Question
- Using my O-scope on Tube amp
- Solid State DC filament supply
- hybrid common cathode amplifier?
- St-70
- Best 300B project
- modifications to compact EL84 amp
- I need a few good (tube) men
- can i substitute 12ax7 for 12ax7a
- Kailin CMPDH300 Tube Power Amplifier
- Opinions and ideas on my new amp
- Some trouble reading schematics
- 6C33C-B Valve Preamplifier
- Filament wiring question
- What to do with these tubes?
- OTL, continued...
- Gas tube cathode load?
- I really would like your help on my 300B project
- How to cut holes for tubes
- Push Pull DHT triode
- Building tube stage with PCB, why?
- What language is this web page on?
- WE308B Production
- RCA Tube Factory Tour
- Ultralinear vs SE
- suparatek syrah
- triode => I.T. =>el84 good idea ?
- EL34 based amp... Eico HF-87 maybe?
- schematics from pre-amp stage to implement in cd-player with E88CC in stead of OPAMPS
- Parallel PP EL84 and ouput transformer question
- Question about transformer positioning.
- JE Labs 300b round 5. MUSIC!! MUSIC!!
- Need help with caps for my 1960 fisher
- Lundahl vs. One Electron
- Push pull dht triode with diode bias
- My next project (maybe).
- arc ls 5 sch
- I'm so glad I found this place!
- What does coupling mean?
- GU-19-1 Russian tube
- Power Amplifier Sensitivity
- The Bias Forum
- RCA LMI-32219 amp
- Solid state guy found some tubes...
- Simple Plans for Newbies...
- Tentative EL84 SE Design.
- bridge mono tube amp
- next project
- A wiring question.
- Several reports of Black Gates failing
- How to get good Fuzz from a Guitar-amp project.
- Is PSE is a poor relation?
- Current requirements of 6SN7 and 5692 tubes
- S5 Amp kit Power supply for UK
- Diy Ankoru Help
- My 300b SE amp
- ecl86&ecc85 scheme
- 5687 filament question
- EL34 Blue GLow