Szczerze mówiąc, to nie mam pojęcia :). Tak są widocznie skonstruowane, to jakaś przerobiona wersja 6L6, (chyba) jeszcze z czasów tych lamp w wersji G/GB. Marshall ich kiedyś używał, jak produkowane EL34 były gorszej jakości, są na niektórych archiwalnych schematach, teraz są np. w serii Vintage (1962 Bluesbreaker, JTM45, JCM900) Tak przy okazji, broszurka f-my Mesa/Boogie, ściągnięta z ich strony jakiś czas temu (teraz nie mogę znaleźć linka)
tube reference guide
MESA Matched & Tested – Our Premium Quality Guarantee
We start by specifying and selecting only the finest tubes
available from around the world. We then test and match
these tube, while under the stress of actual operating
conditions, to the tightest, most demanding specifications
in our industry with the use of our proprietary aerospace
designed tube analysis system called Robotube. We accept only the “finest of the finest” and back them with
the best warranty in the business for a minimum of six
months! Install with the confidence of guaranteed premium performance from the worlds leading designer of
custom, handcrafted amplifiers, MESA/Boogie® Ltd.
Tube Model
Description
Where Used
6L6 STR-440
The 440 is our very best overall 6L6 - It is a premium grade, US equivalent and our tube of choice in the production of all new Mesa 6L6 powered
models - Remarkable bass definition, articulate mids and shimmering highs keep every note amazingly intelligible, with a smooth, creamy
character - Premium structural quality provides exceptional consistency and reliability - Rivals NOS (New Old Stock) durability and sonic character
- Amazing for all styles of music
Stock in: F-50, F-100, Solo 50, Rect-O-Verb, Dual Rec, Triple Rec, Roadster, Road King, Mark I, Mark IV, Lone Star,
2:50, 2:90, Recto 2:100 & Bass 400+
5881 STR-425
Our 425 is a Russian military grade 6L6 that was designed with an emphasis on rugged durability and consistency, capable of handling high
voltage requirements - It produces a thick, rich tone with tapered highs that lends itself to styles of jazz, fusion, some blues or any style where
tapered highs and a full round tone are desired - If you find your amp to be too bright with standard 6L6’s, the 5881 may be your passion
Substitute in: F-50, F-100, Solo 50, Rect-O-Verb, Dual Rec, Triple Rec, Roadster, Road King, Mark I, Mark IV, Lone
Star, 2:50, 2:90, Recto 2:100 & Bass 400+
Our 417 is the little brother to the 6L6 and it is all about classic American tube tone from yesteryear - Extremely sweet and bubbly with a beautifully deep bass and spacious shimmering highs, this tube defines vintage “Deluxe” styled tone and is a great substitute in the Mark I, Mark IV &
Lone Star when used with their “Tweed” Switch feature - Please see the amplifier owner’s manual for correct use of this tube
Substitute in: Mark I, Mark IV & Lone Star
6V6 STR-417
EL-34 STR-447
The 447 is our very best overall EL-34 - It is a premium grade, NOS (New Old Stock) equivalent and our tube of choice in the production of all
new Mesa EL-34 powered models - It has a traditional EL-34 tone & feel that is very urgent and aggressive and is an excellent choice for all styles
of gain, especially classic rock, alternative rock & metal - This tube is true to the crown with focused low end, crushing mid range crunch and
crystal-like highs - This is one of our favorites for authentic British tone - Excellent structural quality provides exceptional consistency and reliability
Stock in: Road King, Stiletto Ace, Stiletto Deuce, Stiletto Trident - Substitute in: Solo 50, Rect-O-Verb, Dual Rec,
Triple Rec, Roadster, Mark IV (outside sockets only), Lone Star, 2:50 & Recto 2:100
EL34 STR-450
Our 450 is an actual German made, “A” grade NOS (New Old Stock) Siemens EL-34 - This legendary European EL-34 is known for its unsurpassed
“bell-tone” clarity and touch sensitive sustain & articulation - Premier German engineering provides unsurpassed structural quality that makes this
one of the most toneful, consistent and reliable EL-34’s you can buy - This is a final chance to own a real authentic EL-34 classic - Quantities are
subject to final availability
Substitute in: Solo 50, Rect-O-Verb, Dual Rec, Triple Rec, Road King, Roadster, Stiletto Ace, Stiletto Deuce, Stiletto
Trident, Mark IV (outside sockets only), Lone Star, 2:50 & Recto 2:100
The EL-84 is the little brother to the EL-34 and is the classic European designed tube that lead the British invasion - Our EL-84 is tight and aggressive, yet smooth and warm, with an amazing chiming mid and top end - Brilliant focus with a frequency response that always brings your guitar
to the front of the mix - This tube is true to its classic roots and is extremely consistent and reliable
Stock in: F-30, Lone Star Special & 20:20
EL84 / 6BQ5
Our 12AX7 preamp tubes provide the maximum level of high gain output and overall tonal quality with unsurpassed consistency and reliability
- They possess a smooth and balanced response across the tonal spectrum and are extremely lively, open and expressive
Stock preamp tube for all MESA/Boogie Guitar & Bass Amps, Preamps & Power Amps
SPAX7A
Our SPAX7 preamp tubes are a premium grade substitute for any 12AX7 positions - They are a “Special Requirement Preamp Tube” that possess
an even higher standard of overall performance, due to their incredibly low sensitivity to microphonic noise - This is the ultimate preamp tube to
use in all critical gain stage positions - It is the absolute best of the best!
Stock preamp tube in select, critical stages of MESA/Boogie Guitar & Bass Amps, Preamps & Power Amps - Substitute for all MESA/Boogie Guitar & Bass Amps, Preamps & Power Amps
12AT7 / ECC81
Our 12AT7 is a classic low gain preamp tube, most often used as a reverb driver and/or phase inverter in older amplifiers - It is used as a reverb
driver in older MESA/Boogie designs, such as the Studio Preamp and some Mark Series amplifiers - It is also currently used in our Mark I Re-Issue
Amplifier
Stock use as reverb driver tube in Mark I reissue - Not currently used in any other MESA/Boogie amplifiers but
offered for use in other manufacturers’ amplifiers
Our 5AR4 rectifier tube produces a vintage feel with light to mild “sag” - While it produces more “sag” than Silicon Diodes, it is the least “saggy”
of our tube rectifier offerings (The Rectifier is part of the Power Supply and its purpose is to convert AC into DC)
Not currently used in any MESA/Boogie amplifiers but offered for use in other manufacturers’ amplifiers
Our 5Y3 is a true, authentic 5Y3 NOS (New Old Stock) equivalent, modeled after the original Phillips 5Y3 and is built to our exacting specification,
especially for the Lone Star Special - This tube produces a sultry vintage sag, creating a silky, smooth feel on the strings and provides the most sag
of all of our rectifier tubes
Stock in: Lone Star Special
5Y3
5U4G
Our 5U4G rectifier tube is a classic 1930’s “Coke Bottle” design - It produces a flexible, elastic feel that is a bit more controlled and slightly less
“saggy” than our new 5U4GB - It has a nice spongy feel but has moderate life expectancy and reliability compared to our new 5U4GB - Due to its
tall “Coke Bottle” design, this tube may not fit in all amplifiers - Please confirm the height between the amp chassis and the cabinet before recommending this tube (The Rectifier is part of the Power Supply and its purpose is to convert AC into DC)
Substitute in: Dual Rectifier, Triple Rectifier, Roadster, Road King, Stiletto Ace, Stiletto Deuce,
Stiletto Trident & Lone Star
The 5U4GB rectifier tube is our very best overall 5U4 and our tube of choice in the production of all new Mesa amps featuring this tube - Based
upon classic 1950’s technology, the 5U4GB is a new and vastly improved 5U4 design that is extremely reliable and consistent, as well as much
more compact - It is basically the size of a 6L6 power tube, so please take special care to install them in the correct tube position(s), especially
when replacing 6L6’s at the same time - This tube produces a “traditional vintage sag” with the most elastic and compressed feel of the two
5U4’s that we offer - Amazing feel and exceptional overall quality make this our factory favorite
Stock in: Dual Rectifier, Triple Rectifier, Roadster, Road King, Stiletto Ace, Stiletto Deuce, Stiletto Trident & Lone Star
12AX7 / 7025 / ECC83
5AR4 / GZ34
5U4GB
90
PRODUCT SPECIFICATIONS
Model / Format / Speaker
Wattage(s)
Chan.
Modes
Power Section
Power Devices
Styles / Gain Voicing
Standard Footswitch Functions
F-30 Short Head (18 3/4”)
30
Two
Three
Dyna-Watt
2xEL84
All Styles - Clean, Medium Gain & High Gain
Channel 1 & 2, Contour & Reverb
F-30 1x12 Compact Combo w/V30
30
Two
Three
Dyna-Watt
2xEL84
All Styles - Clean, Medium Gain & High Gain
Channel 1 & 2, Contour & Reverb
F-50 Medium Head (22 1/2”)
50
Two
Three
Class A/B
2x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1 & 2, Contour & Reverb
F-50 1x12 WideBody Combo w/C90
50
Two
Three
Class A/B
2x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1 & 2, Contour & Reverb
F-100 Long Head (26 3/8”)
100/60
Two
Three
Class A/B
4x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1 & 2, Contour & Reverb
F-100 2x12 Combo w/V30’s
100/60
Two
Three
Class A/B
4x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1 & 2, Contour & Reverb
Single Rectifier Solo 50 Head (25 1/2”)
50
Two
Five
Class A/B
2x6L6
Modern Styles - Clean, Crunch & High Gain
Channel 1, 2 & Solo
Rect-O-Verb Head (26 7/8”)
50
Two
Five
Class A/B
2x6L6
Modern Styles - Clean, Crunch & High Gain
Channel 1, 2, Solo & Reverb
Rect-O-Verb 1x12 3/4-Back Combo w/C90
50
Two
Five
Class A/B
2x6L6
Modern Styles - Clean, Crunch & High Gain
Channel 1, 2, Solo & Reverb
Dual Rectifier Solo Head (25 1/2”)
100
Three
Eight
Class A/B
4x6L6
Modern Styles - Clean, Crunch & High Gain
Channel 1, 2, 3, Solo & FX Loop
Triple Rectifier Solo Head (25 1/2”)
150
Three
Eight
Class A/B
6x6L6
Modern Styles - Clean, Crunch & High Gain
Channel 1, 2, 3, Solo & FX Loop
Roadster Head (Width 25 5/8”)
Multi-Watt 100/50
Four
Twelve
Class A/B - Chan. Assign 100/50
4x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2, 3, 4, Reverb, Mute (tune), FX Loop & Solo
Roadster 1x12 Closed Back Combo w/V30 (Width 26 3/4”)
Multi-Watt 100/50
Four
Twelve
Class A/B - Chan. Assign 100/50
4x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2, 3, 4, Reverb, Mute (tune), FX Loop & Solo
Roadster 2x12 Closed Back Combo w/V30’s (Width 26 3/4”)
Multi-Watt 100/50
Four
Twelve
Class A/B - Chan. Assign 100/50
4x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2, 3, 4, Reverb, Mute (tune), FX Loop & Solo
Road King Solo Head (27 3/4”)
Multi-Watt 120/100/50
Four
Twelve
Class A/B - Progressive Linkage
2xEL34 & 4x 6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2, 3, 4, Solo, Reverb, Ext, Loop 1 & 2
Road King 2x12 Combo w/90’s (28 1/2”)
Multi-Watt 120/100/50
Four
Twelve
Class A/B - Progressive Linkage
2xEL34 & 4x 6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2, 3, 4, Solo, Reverb, Ext, Loop 1 & 2
Stiletto Ace Head (Width 26 3/4”)
50
Two
Six
Class A/B
2xEL34
All Styles - Clean, Classic Crunch & High Gain
Channel 1, 2 & Solo
Stiletto Ace 1x12 Closed Back Combo w/V30
50
Two
Six
Class A/B
2xEL34
All Styles - Clean, Classic Crunch & High Gain
Channel 1, 2 & Solo
Stiletto Ace 2x12 Closed Back Combo w/V30
50
Two
Six
Class A/B
2xEL34
All Styles - Clean, Classic Crunch & High Gain
Channel 1, 2 & Solo
Stiletto Deuce Stage II Solo Head (25 1/2”)
Multi-Watt 100/50
Two
Six
Class A/B - Chan. Assign 100/50
4xEL34
Classic & Modern Styles - Clean, Crunch & High Gain
Channel 1, 2 & Solo
Stiletto Trident Stage II Solo Head (25 1/2”)
Multi-Watt 150/50
Two
Six
Class A/B - Chan. Assign 150/50
6xEL34
Classic & Modern Styles - Clean, Crunch & High Gain
Channel 1, 2 & Solo
Mark I Reissue Short Head (18 3/4”) - Limited Avail.
100/60
One
Two
Class A/B
4x6L6
All Styles - Clean, Medium Gain & Classic High Gain
N/A
Mark I Reissue 1x12 Compact Combo w/C90 - Limited Avail.
100/60
One
Two
Class A/B
4x6L6
All Styles - Clean, Medium Gain & Classic High Gain
N/A
Mark IV Short Head (18 3/4”)
85/70/50/30
Three
Five
Simul-Class
4x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2, 3, Lead+EQ, EQ & FX Loop
Mark IV Medium Head (22 1/2”)
85/70/50/30
Three
Five
Simul-Class
4x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2, 3, Lead+EQ, EQ & FX Loop
Mark IV 1x12 WideBody Combo w/C90
85/70/50/30
Three
Five
Simul-Class
4x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2, 3, Lead+EQ, EQ & FX Loop
Mark IV 1x12 Compact Combo w/C90
85/70/50/30
Three
Five
Simul-Class
4x6L6
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2, 3, Lead+EQ, EQ & FX Loop
Lone Star Special Head (22 7/8”)
Multi-Watt 38/30/15/5
Two
Four
Pure Class A - Chan. Assign 30/15/5
4xEL-84
Classic Styles - Clean, Blues & Classic High Gain
Channel 1, 2 & Solo
Lone Star Special 1x12 Combo (22 7/8”) w/C90
Multi-Watt 38/30/15/5
Two
Four
Pure Class A - Chan. Assign 30/15/5
4xEL-84
Classic Styles - Clean, Blues & Classic High Gain
Channel 1, 2 & Solo
Lone Star Special 2x12 Combo w/C90’s
Multi-Watt 38/30/15/5
Two
Four
Pure Class A - Chan. Assign 30/15/5
4xEL-84
Classic Styles - Clean, Blues & Classic High Gain
Channel 1, 2 & Solo
Lone Star Special 4x10 Combo w/Jensen & Eminence
Multi-Watt 38/30/15/5
Two
Four
Pure Class A - Chan. Assign 30/15/5
4xEL-84
Classic Styles - Clean, Blues & Classic High Gain
Channel 1, 2 & Solo
Lone Star Head (26 7/8”)
Multi-Watt 100/50
Two
Four
Class A/B - Chan. Assign 100/50
4x6L6
Classic Styles - Clean, Blues & Classic High Gain
Channel 1, 2 & Solo
Lone Star 1x12 Combo (26 7/8”) w/C90’s
Multi-Watt 100/50
Two
Four
Class A/B - Chan. Assign 100/50
4x6L6
Classic Styles - Clean, Blues & Classic High Gain
Channel 1, 2 & Solo
Lone Star 2x12 Combo w/C90’s
Multi-Watt 100/50
Two
Four
Class A/B - Chan. Assign 100/50
4x6L6
Classic Styles - Clean, Blues & Classic High Gain
Channel 1, 2 & Solo
Lone Star 4x10 Combo w/Jensen Vintage Alnico
Multi-Watt 100/50
Two
Four
Class A/B - Chan. Assign 100/50
4x6L6
Classic Styles - Clean, Blues & Classic High Gain
Channel 1, 2 & Solo
Rectifier Recording Pre-Amp - 2 Rack Spaces
N/A
Two
Six
N/A
6x12AX7
All Styles - Clean, Medium Gain & High Gain
Channel 1, 2 & Solo/Vintage
TriAxis Pre-Amp - 1 Rack Space
N/A
Ninety
Eight
N/A
5x12AX7
All Styles - Clean, Medium Gain & High Gain
Full MIDI Implementation & Continuos Control
20/20 Power Amp - 1 Rack Space
20/Channel
N/A
N/A
Dyna-Watt
4xEL84
All Styles - Tight Lows, Rich Mids, Chiming Highs
N/A
Stereo 2:Fifty Power Amp - 2 Rack Spaces
50/Channel
N/A
N/A
Class A/B
4x6L6
All Styles - Fat Lows, Punchy Mids, Sparkling Highs
N/A
Simul-Class 2:Ninety Power Amp - 2 Rack Spaces
90/45/Channel
N/A
Four
Simul-Class
8x6L6
All Styles - Juicy Lows, Lush Mids, Shimmering Highs
N/A
Recto Stereo 2:One Hundred Power Amp - 2 Rack Spaces
100/Channel
N/A
Two
Class A/B
8x6L6
All Styles - Bold Lows, Articulate Mids, Spanking Highs
N/A
WalkAbout Compact Bass Amp - Metal Chassis
300 @ 4 Ohms
One
One
Simul-State
6xMos-Fet
All Styles - Exceptional Tone Shaping, Fidelity & Power
N/A
WalkAbout Bass Head - Retro Styled Head Case
300 @ 4 Ohms
One
One
Simul-State
6xMos-Fet
All Styles - Exceptional Tone Shaping, Fidelity & Power
N/A
WalkAbout Scout 1x12 Bass Combo w/Scout Neodym
300 @ 4 Ohms
One
One
Simul-State
6xMos-Fet
All Styles - Neodym Speaker Tech. w/Passive Bass Radiator
N/A
WalkAbout Scout 1x15 Bass Combo w/Scout Neodym
300 @ 4 Ohms
One
One
Simul-State
6xMos-Fet
All Styles - Neodym Speaker Tech. w/Passive Bass Radiator
N/A
M-Pulse 600 Rackmount Head - 2 Rack Spaces
600 @ 4 Ohms
One
Two
Simul-State
8xMos-Fet
All Styles - Exceptional Tone Shaping, Fidelity & Power
Parametric EQ, Compressor, Solo & FX
M-Pulse 600 Head - Retro Styled Head Case
600 @ 4 Ohms
One
Two
Simul-State
8xMos-Fet
All Styles - Exceptional Tone Shaping, Fidelity & Power
Parametric EQ, Compressor, Solo & FX
Venture 600 2x12 Bass Combo w/PowerHouse Neodym
600 @ 4 Ohms
One
Two
Simul-State
8xMos-Fet
All Styles - Portable Bass Combo w/Amazing Power & Control
Parametric EQ, Compressor, Solo & FX
Big Block 750 Rackmount Head - 2 Rack Spaces
750 @ 2 Ohms
Two
Two
Simul-State
12xMos-Fet
All Styles - Massive Authority, Footswitchable Overdrive
Over-Drive & Mute (tune)
Big Block 750 Head - Retro Styled Head Case
750 @ 2 Ohms
Two
Two
Simul-State
12xMos-Fet
All Styles - Massive Authority, Footswitchable Overdrive
Over-Drive & Mute (tune)
Big Block Titan-V12 Rackmount Head - 3 Rack Spaces
1400 @ 2 Ohms
Two
Four
Simul-State
22xMos-Fet
All Styles - The Ultimate in Power and Performance Versatility
Channel 1/2, Overdrive 1/2, Input A/B, Solo & Mute (tune)
Big Block Titan-V12 Head - Retro Styled Head Case
1400 @ 2 Ohms
Two
Four
Simul-State
22xMos-Fet
All Styles - The Ultimate in Power and Performance Versatility
Channel 1/2, Overdrive 1/2, Input A/B, Solo & Mute (tune)
Bass 400+ Rackmount Head - 4 Rack Spaces
500 @ 2 Ohms
One
Three
Class A/B
12x6L6
Classic Styles - All Tube Power - A Rock Legend
N/A
IN THE INTEREST OF CONTINUOUS IMPROVEMENT, SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE. VISIT WWW.MESABOOGIE.COM FOR THE LATEST DETAILS.
91