Vacuum Tubes for Amps

micKtubes

This directory contains USENET articles Mic has saved about guitars, equipment, pickup, techniques, players, and so on. Mic has graciously granted permission to post the stuff on the JT30 page on the off chance that it might be useful in the context of Blues Harmonica. Mic is not responsible for the content, just the collection.

micKtubes

Mic Kaczmarczik's Tube Information

12AX7-Comparisons	26-Mar-1998 15:31 2k
12AX7-gain-test	26-Mar-1995 14:37 2k
12AX7-vs-12AT7	20-Aug-1995 09:53 3k
12AX7-vs-5751	19-Aug-1995 20:34 1k
12AX7-vs-7025	27-Aug-1994 09:01 2k
5881-in-Deluxe	20-Dec-1994 11:19 3k
5881=6L6GB	20-Nov-1994 09:58 3k
5AR4-Typing	01-Mar-1996 16:52 3k
5AR4-data	14-Dec-1995 11:50 14k
5V4-for-5AR4	06-Apr-1996 14:18 1k
62-Twin-Speakers	17-Dec-1995 17:15 3k
6550s-in-Twin	03-Sep-1996 09:41 2k
6EY6	09-Jan-1997 10:39 1k
6EY6-Characteristics	21-May-1997 16:43 1k
6EY6-close-to-6V6	05-Jan-1997 22:03 1k
6EY6-rating-vs-6V6	03-Dec-1997 20:24 2k
6L6-GC-meaning	28-May-1995 10:32 1k
6L6-Taste-Tests	31-Jul-1999 10:39 11k
6L6-Types	20-Jan-1996 15:41 3k
6L6GC-ID	27-Aug-1998 09:02 2k
6L6WGB-vs-7581	12-May-1997 10:22 6k
6MB8-tube-specs	30-Jan-1995 10:35 1k
6V6-6L6-swaps	14-Jan-1997 10:42 3k
6V6-NOS-vs-Sovtek	27-Sep-1996 15:27 2k
6V6-Ratings	29-Jul-1996 10:38 4k
6V6-Russian-RCA-Copies	29-Jan-1999 12:36 2k
6V6-Types	07-Nov-1998 10:50 3k
6V6-duty-cycle	25-Nov-1995 00:12 4k
6V6-to-EL84-Cathode-..>	08-Nov-1998 11:37 3k
6V6=7408	09-Jul-1996 01:03 1k
6V6EH-Taste-Test	21-Dec-1999 13:14 13k
6V6EH-vs-RCA-Blackpl..>	19-Apr-2000 14:02 1k
6V6GT-Types	09-Feb-1999 16:20 2k
6V6GT-vs-GTA	19-Aug-1995 00:08 2k
6V6s-in-6L6-amps	27-Mar-1996 13:32 6k
7408-info	05-Jun-1997 11:39 2k
7581A-tubes	19-May-1995 22:39 1k
7868-equivalents	05-Oct-1996 13:16 1k
Amperex-history	16-Mar-1997 02:10 3k
Best-6V6	27-Aug-1998 09:00 2k
Blue-Glow-Sylvania	18-Jan-1998 10:20 3k
Breaking-in-Tubes	18-Jun-1995 09:45 2k
Breathe-on-tubes	24-Aug-1995 15:02 1k
Brimar-Special-Quality	17-Oct-1996 11:57 3k
CEI-6V6GTs	23-Oct-1998 09:22 1k
Chinese-12AT7s	01-Dec-1995 10:37 2k
Chinese-6V6GTBC	12-Sep-1995 22:45 2k
Design-Max-Rating	31-Dec-1995 10:52 2k
EL34-coding-explained	06-Apr-1995 10:09 2k
Euro-Tube-Code	23-Jan-1997 00:04 11k
Fingerprints	21-Jan-1996 19:55 3k
Fuzzy-Cathodes	18-Jun-1997 17:24 4k
GE-and-Sylvania	26-Aug-1995 22:14 1k
GZ34-Varieties	20-Jan-1998 23:06 2k
GZ34-types	13-May-1998 15:19 2k
GZ37-vs-5U4	03-Apr-1997 12:42 1k
Groove-Tubes	01-Oct-1994 00:22 3k
Groove-Tubes-6V6HD	27-Nov-1994 17:04 6k
Groove-Tubes-testing	23-Sep-1998 09:11 7k
How-Are-Tubes-Made	10-Mar-1997 22:11 3k
Hytron-tubes	18-Oct-1996 10:02 2k
ID-Tube-Makers	17-Dec-1997 12:44 3k
Identify-Tube-Makers	31-Jan-1997 20:48 6k
Is-Tube-Matching-Needed	14-Oct-1994 11:17 3k
LV-Visseaux-6V6-Warning	30-Apr-1999 09:18 2k
M.O.Valve-Gold-Lion	30-Apr-1997 19:26 2k
Making-Tubes	06-Sep-1997 10:11 4k
Mazda-History	13-May-1998 13:50 5k
Metal-6V6s	25-Jun-1995 09:53 3k
More-M.O.Valve-History	06-May-1997 16:49 7k
New-US-6L6GCs	21-Nov-1996 13:44 2k
No-More-Chinese-12AX7s	17-Feb-1998 09:30 2k
Overvoltage-Effects	10-Aug-1997 21:34 6k
Phillips-6L6GB-JAN	13-Jun-1996 09:58 1k
Photon-Noise	20-Jun-1998 11:27 4k
RTV-Tube-Damping	19-Jan-1997 10:58 5k
Real-Mullard-GZ34s	12-Jul-1996 20:46 3k
Relabeling	23-Mar-1997 20:01 2k
Ruby-6V6GTBC	19-Nov-1995 10:55 2k
SPICE-tube-models	22-Aug-1995 09:25 1k
SV-6L6GC	24-Oct-1996 20:41 1k
Sovtek-12AT7EH-5751-..>	21-Sep-2000 10:14 6k
Sovtek-5881	31-Aug-1996 09:46 4k
Sovtek-5881-Confusion	24-Sep-1996 13:15 2k
Sovtek-5881-data	17-Apr-1996 00:57 7k
Sovtek-5881-for-7027	19-Sep-1995 11:35 2k
Sovtek-5881-specs	03-Nov-1995 11:01 3k
Sovtek-5881WXT	24-Feb-1996 11:06 3k
Sovtek-6CA7-problems	01-Jun-1995 00:00 4k
Sovtek-6L6WXT+	11-Aug-1998 10:49 2k
Sovtek-Midget	28-Jul-1995 15:31 2k
Sovtek-Online	03-Jun-1996 00:14 1k
Sovtek-Tube-specs	08-Aug-1995 11:34 3k
Sovtek-page	24-May-1995 17:47 1k
Standby-Switches	02-Oct-1999 13:55 4k
Svetlana-6550s	07-Nov-1995 11:01 4k
Svetlana-6L6GC	26-Oct-1996 00:18 2k
Svetlana-7591A	28-Oct-1996 20:13 1k
Svetlana-EL34-review	16-May-1996 10:18 6k
Telefunken-Tubes	16-Oct-1994 09:36 1k
Telefunken-placement	08-Dec-1995 12:47 1k
Tesla-12AX7	18-Feb-1998 11:07 2k
Tesla-6L6GC	21-Oct-1996 00:50 1k
Tomorrows-tubes	31-Aug-1995 22:03 9k
Tube-Amp-Books	17-Feb-1995 12:10 3k
Tube-Amp-FAQ-Feb-96	01-Mar-1996 18:51 65k
Tube-Chickens	24-Apr-1997 12:20 5k
Tube-Curve-Tracers	12-Apr-1996 20:36 1k
Tube-Data-Page	31-Jan-1998 23:44 1k
Tube-Data-Web-site	03-Feb-1996 19:24 1k
Tube-Failures	21-Mar-1996 12:58 2k
Tube-Manufacturers	13-Dec-1997 00:31 7k
Tube-Mfgr-Codes	17-Dec-1996 15:46 3k
Tube-Naming-Explained	30-May-1995 22:42 5k
Tube-Relabeling	07-Nov-1998 18:47 4k
Tube-Stability	12-Aug-1999 11:45 2k
Tube-amp-books	12-May-1995 12:40 10k
Tube-gas-avalanche	26-Jun-1995 21:11 2k
Tube-heating-effects	24-Mar-1994 12:37 4k
Tube-mismatch-harmonics	26-Aug-1995 22:23 5k
Tube-rejuvenation	18-Apr-1996 12:11 2k
Tube-types	13-Aug-1994 16:19 5k
Tubes-vs-SS	07-Jul-1995 11:23 4k
Visseaux-6V6	06-Feb-1999 13:28 4k
Visseaux-6V6-Warning	30-Apr-1999 13:27 7k
Vudu-Tube-Replacement	01-Sep-1995 08:14 1k
What-Does-6L6GC-Mean	12-Apr-1999 10:20 1k
What-is-5881	23-May-1997 20:53 9k
What-is-7027	31-Mar-1998 22:19 2k
Which-Rectifier	25-Nov-1995 00:18 3k
Why-5V-rectifier-vs-..>	23-Mar-1998 13:10 3k
Why-6.3V-Filaments	19-Nov-1996 19:25 4k
Why-Tubes-Coated-Inside	05-May-1998 08:53 5k
Worn-Out-GZ34s	19-Sep-1998 15:35 2k
YA-tube-page	28-Aug-1996 21:39 2k

Index:

12AX7 Comparisons
12AX7 gain test
12AX7 vs 12AT7
12AX7 vs 5751

12AX7 vs 7025
5881 in Deluxe
5881=6L6GB
5AR4 data

5AR4 Typing
5V4 for 5AR4
62 Twin Speakers
6550s in Twin

6EY6 Characteristics
6EY6 close to 6V6
6EY6 rating vs 6V6
6EY6

6L6 GC meaning
6L6 Taste Tests
6L6 Types
6L6GC ID

6L6WGB vs 7581
6MB8 tube specs
6V6 6L6 swaps
6V6 duty cycle

6V6 NOS vs Sovtek
6V6 Ratings
6V6 Russian RCA Copies
6V6 to EL84 Cathode Resistor

6V6 Types
6V6=7408
6V6EH Taste Test
6V6EH vs RCA Blackplates

6V6GT Types
6V6GT vs GTA
6V6s in 6L6 amps
7408 info

7581A tubes
7868 equivalents
Amperex history
Best 6V6

Blue Glow Sylvania
Breaking in Tubes
Breathe on tubes
Brimar Special Quality

CEI 6V6GTs
Chinese 12AT7s
Chinese 6V6GTBC
Design Max Rating

EL34 coding explained
Euro Tube Code
Fingerprints
Fuzzy Cathodes

GE and Sylvania
Groove Tubes 6V6HD
Groove Tubes testing
Groove Tubes

GZ34 types
GZ34 Varieties
GZ37 vs 5U4
How Are Tubes Made

Hytron tubes
ID Tube Makers
Identify Tube Makers
Is Tube Matching Needed

LV Visseaux 6V6 Warning
M
Making Tubes
Mazda History

Metal 6V6s
micKtubes
More M
New US 6L6GCs

No More Chinese 12AX7s
Overvoltage Effects
Phillips 6L6GB JAN
Photon Noise

Real Mullard GZ34s
Relabeling
RTV Tube Damping
Ruby 6V6GTBC

Sovtek 12AT7EH 5751 Test
Sovtek 5881 Confusion
Sovtek 5881 data
Sovtek 5881 for 7027

Sovtek 5881 specs
Sovtek 5881
Sovtek 5881WXT
Sovtek 6CA7 problems

Sovtek 6L6WXT+
Sovtek Midget
Sovtek Online
Sovtek page

Sovtek Tube specs
SPICE tube models
Standby Switches
SV 6L6GC

Svetlana 6550s
Svetlana 6L6GC
Svetlana 7591A
Svetlana EL34 review

Telefunken placement
Telefunken Tubes
Tesla 12AX7
Tesla 6L6GC

Tomorrows tubes
Tube Amp Books
Tube Amp FAQ Feb 96
Tube Chickens

Tube Curve Tracers
Tube Data Page
Tube Data Web site
Tube Failures

Tube gas avalanche
Tube heating effects
Tube Manufacturers
Tube Mfgr Codes

Tube mismatch harmonics
Tube Naming Explained
Tube rejuvenation
Tube Relabeling

Tube Stability
Tube types
Tubes for sale
Tubes vs SS

Visseaux 6V6 Warning
Visseaux 6V6
Vudu Tube Replacement
What Does 6L6GC Mean

What is 5881
What is 7027
Which Rectifier
Why 5V rectifier vs 6

Why 6
Why Tubes Coated Inside
Worn Out GZ34s
YA tube page

micK pages

Amps
Caps
Circuits
D-I-Y
Effects
Fender
Guitars
Q & A
Speakers
Tubes
Vendors

Mic Kaczmarczik's USENET Articles

Circuits	Guitars	Fender Amps
Tubes	DIY (do it yourself)	Caps
qanda (Questions and Answers)	Speakers	Vendors
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Mic Kaczmarczik's micKtubes Information

Vacuum Tubes for Amps

micKtubes

Mic Kaczmarczik's Tube Information

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