- New Phono amp - developing stage
- fender princeton 5D2.. DONE!
- CCS Bang for the buck output or driver?
- pentode driver sanity check - before i build
- 6av6 mini pre didn t work
- CCS in the output stage
- Looking for Schematic using KC3 Preamp ?
- If you are looking to try balanced AC power....
- The best Coupling cap (under $20)
- What makes a speaker "tube-friendly"?
- Using 6L6 for 300b driver
- Heater reference
- 6G15 output transformer selection
- Morgan Jones and cascodes
- 6A3/6B4G/6S4S(2A3/2S4S) project
- blues junior complaints and 6G15 question
- Question about changing a hybrid
- High-end Class A valve amplifiers will be illegal in USA?
- transformerless supply
- "Quasi" ultralinear experiment - questions...
- Help on a LUXMAN MQ 3600
- Changing from 6X4 to EZ81
- Design questions, driver stage for SE.
- S5 K-12G Question
- Ideas for a tube that heavily distorts ?
- CCS current sink in the output of my 2 tube 6080 amp.
- What do you think about my design (based on IMPAMP)
- spearinol oil (in ASC caps)
- Larger chassis Hole Punches
- HV Diode Selection
- Need help form Germany
- Output Impedance
- How to connect Gridchoke?
- Microphone In Guitar amp Question
- Triode connecting a pentode?
- help on line pre-amp
- Edcor P-P Transformers
- chassis work in NYC area
- low THD guitar preamp
- Please help ID this rectifier:
- Power Supply Voltage For 5881/6L6 Amp
- Audio Electronic Supply AE-25DJH
- Trouble: Main transfo short?
- help with chassis layout
- "Preamp" with remote (long)
- 6BY5 High Voltage & High Current Choke Input Design P.S.
- x-10 d and x-can version 2/3 schematics
- Ugly, but versatile, new amp
- Capacitor advice needed for AVA PAS rebuild
- Mic pre transformers
- Gain of JE labs 300B?
- Troubleshooting.
- new to the forum pre-amp
- Preamp output delay
- Super Triode Connection Amplifier Build with 6BM8 and 6AK5
- 1st project hum or buzz
- Impedans of trafo for EL504 inSE
- Can I use 2C39-B to sound
- usage of line out trans.
- eagle with tubes ?
- Rlim in GZ33 datasheet?
- LT1085 Current Regulation for DHT filaments
- Help Fixing Bias
- MC phono amp
- 10M45 Mu-Stage Idea?
- Hickok 6000A with 6C33 & 13E1...
- Isco 494
- looking for spice model of 6HA5 or similar tubes
- 6SL7 to 6SN7 substitution in power amp?
- Adding Subwoofer output to Aikido preamp circuit
- A request for PP 6c33c Schematics
- Thumping from left speaker when volume is low
- Crosstalk in twintriodes?
- Example Schematics?
- how to choose a rectifier tube? (specifically octals)
- Rather odd valve socket - anyone have any ideas?
- PS for GG - look for better channel separation
- help! T16 OTL schematic
- Bench PSU for tubes
- Tube Bogen J330 PA amp
- FM Stereo Tuner Tube Schematic ?
- Conn organ conversion to amp
- Smoking Transformer
- Questions on 1:1:1 driver transformer
- Pentode vrs Mosfet “MU-Stage”
- Transformer center tap connections
- dumb question :P KT88...
- Tube rectifier & regulator (modified)
- Some advice on this power supply
- Looking for Amperex C11550/1 data.
- Inserting tubes into Express PCB
- What do you think of this? (211 A2 SE)
- Help w/ diyAudio CCS implementation
- First DIY Amp Project
- HELP with PHONO and MIC preamps.
- CLC vs LCLC: is there any advantages other...
- Problem with old Heathkit
- Does anyone interested tube rectifier & regulator PCB ?
- Velleman K4040 conversion from EL34's to KT88's
- finished my PCC88 preamp
- Max 300B SE output possible with James 6123HS ?
- Who's right re bias adjustment versus plate voltage
- voltage current regulator
- Yarland 34 ciii amp
- CCS/5842/300B ground schematic.
- tube sockets
- PX25
- Research on tubes and circuits simple circuits
- using only 1/2 of a dual triode
- Some HMMM on my SRPP
- Grid Stopper
- diy tube amp problem
- The Red Light District - another PP EL84 amp
- Balanced 300B output for headphones or loudspeakers?
- 5692, the best?
- Power transformer quality differences
- Is it possible to use regulated DC for a rectifier tube?
- Transformer Secondary Power
- Phono preamp
- VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
- Physically small rectifier tube with 5V heaters
- Distorting 5687 preamp circuit
- Looking for a good 300B datasheet
- CCS is your friend!
- Valve Pre Amp & Class D Power Amp
- heater supply questions
- sub-mini valve
- Amp kit recommendations
- First amp for a new in valves
- Loud buzz and hum from one monoblock!!!
- Stueyh
- Big *** '50s Power Supply, now what? 300B SET ideas...
- Phono Preamp Design Needed
- antique fender bassman 50 retubed HELP
- Severe oscillation in 6L6 amp
- How to tweak warmth to a power amp?
- Can anyone explain me this Loftin White amp?
- Substituting dual triodes
- ValveWave-1 My first Tube Project
- changing output capacitor value? what should I consider?
- motor run caps in the output? good or bad idea?
- resistors across the heater voltage then the middle is grounded
- Switched Pot Source Needed
- transcendar transformer
- Installing tubes upside-down? Bad? Maybe it doesn't matter?
- Voltage Multipliers
- I want to build an AM Tube Tuner
- Tube Amp CCS?
- S-5 Electronics Tube Amp Kit
- Tube amps from eBay (China)
- filament supply: batteries v TentLabs?
- replace a 5651 tube with a zener?
- tube design books
- Bogen chb100 input conversion suggestions
- MesaBoogie 400+ clone
- EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
- R-core xformers from China
- Counterpoint Service manual wanted
- Two chokes in one pot?
- help with a transformer
- 311T (211 alike) HIGH power triode
- Re-attaching anode cap to 805 or 811A tube
- "Fisher Doctor"
- Aikido + class D in the output stage
- tube-shop-com
- Ultrasonic heaters
- Grounding the Filament Winding
- Lundahl LL1680 for balanced output
- Website is back & new books posted
- strange tube G1 S/5
- First Tube Amp Needs an Overhaul
- pspice models for tubes
- Source for iron cores?
- Quad EL84 SE question
- Use of 12j1l and gu-50 tubes
- Shuguang 300B-98C
- Philips AG-9016 Upgrades???
- My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
- tube amp in a PCB with a toroidal xformer beside it?
- Need advice running 220v in USA
- My Fender Princeton FD2 chasis (clone)
- Parallel-Push-Pull KT66 organ amp conversion ???
- new on tubes
- Balance 5687 pre-amp any advise??
- The Limitations of an EL34 in UL
- Source for tube bases....?
- 10Y, 26, 27 and 45: relative microphonics
- KT77 Mod Question/Idea/Punshishment
- KT88 SE with Edcor xfrmr
- Diy Distortion Pedal
- 45 fans – expanded horizons upstream?
- 12B4a Cathode Follower
- Hybrid voltage doubler using tube and diode
- Finally finished my first tube amp!
- advice on an EL84 Push pull Amp schematic
- Vintage radio
- Look for 12AU7 Preamp Circuit .
- PSU question? Going tube rectified
- PSU Rebuild Help Pleas
- Screeching tubes
- help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
- Fisher 800 restoration
- stern's ecl86 amp
- Look for Western Electric KS-16547-L1 circuit diagram
- Help about grommes 500C
- Dynaco MK III with 6146A tubes.
- Volume pot for Musical Fidelity F22 pre amp.
- Don't you just hate it when
- Bogen 8417 tube conversion..?
- How to Build Unbilical from PS to Phono
- Class A SET preamp, help
- Grounding MFA Luminescence
- custom transformer manufacturers (potted if possible)
- To Recap - A Question
- KT 44 anyone tried these
- Volts AC rating in power supply caps
- unfamiliar tube brand
- power supply schematic with a 6080 used as a "pass tube"
- Electro-Vox LA-210 Preamp; tube
- why so CHEAP!?
- Antique Electronic Supply
- Best Use For My Sansui Iron?
- Help on AMC CVT 3030
- Heathkit W-5M Red Plate Issue
- 1st Post (here) : ) My first project: Boozhound Amp
- regulated DC heater supply
- Help me pick up some good tubes! Urgent!
- CLCRC power supply config
- Choke Replacement Question.
- What tube instead of 7189
- Help on PP EL 34 from Claus Byrith
- Datasheet of PTT4 tube?
- ready to give up
- O-Ring sizes for Tube Dampers
- preamp /amp combination question
- Strange Transformer Question.....
- Audio Note M3/4/5/6/8 schematics
- Lundahl LL1540 for SY's heretical?
- Henrys
- 955 Acorn tubes
- Do you know these Ampex mono Amps
- Audio Research Resistor Type
- What's the best low wattage guitar amp?
- volume issues
- Need advice for best CCS
- confusion in the resistor/capacitor values and B+ supply for the aikido
- What are the diferences between these ways of output?
- PS for tube preamp
- what resistors are in the aikido signal path
- clarification of aikido heater supply