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                                                       Gibson Tube Amp Specifications
                              I would like to thank Björn Anger for permission to use the information contained here.
                                                             Additional info & photos provided by Charles Kotlaris.
                          
                Please do not copy info contained here without a link back to this page !
                                   If you need tubes for these amps, I have a dwindling selection of "New old stock"  RCA & GE
Pre-WWII AMPLIFIERS
  Speaker Inputs
(instr. + mic.) 		Vol.
Control 		Tone
Control 		Ext. Spkr.
Jack 		Tubes Output
Watts
Preamp Output Rect.
EH-100* (\'36 black leatherette, \'37 tan aero plane cloth/dark vertical stripes,
\'38-39 brown aero plane cloth/yellow horizontal stripes, \'40 natural mahogany finish)
c. 1936-37 10" f.c. 2 No No No 6N7 2-42 80  
c. 1937-38 10" f.c. 1+1 Mic only No No 6C8, 6C5 2-42 or 2-6V6 80  
c. 1938-39 10" f.c. 2+1 Mic only No No 6F5, 6C5, 6N7 2-6V6 80 8
c. 1939-40 10" f.c. 2+1 Mic only No No   2-6V6   8
c. 1940-41 10" f.c. 2+1 Mic only No No 6C5, 6SQ7, 6N7 2-6V6 5Y3  
EH-125 (EH-150 round shouldered style cabinet)
c. 1941-42 12" f.c.         2-6SQ7, 6J5 2-6V6 5Y3  
c. 194? 12" f.c. 2+1 Mic only No No 6SJ7, 6J5 2-6V6 5Y3  
EH-150** (\'35-37 square cab., \'37-42 round shouldered cab.)
c. 1935-36 10" f.c. 2 No No No 6A6 2-6F6 80 or 5Z4  
c. 1936-37 10" f.c. 2+1 2 Sw Yes 6C5, 6F5, 6N7 2-6N6 5Z3 15
c. 1937-41 12" f.c. 2+1 2 1 Yes 3-6C5, 6F5 2-6L6 5Z3  
c. 1941-42 12" f.c. 2+1 2 1 No 3-6SQ7, 6N7 2-6L6 5U4  
EH-185***
c. 1939-42 12" 2+1 2 Bass, treble Yes 3-6J7, 6N7 2-6L6 5U4 15
c. 1941-42 Circuitry identical to 1941-42 EH-150
EH-275 (natural maple finish cabinet)
No details known.

*) AC/DC version was available, sometimes known as EH-110. 6VDC version was also offered.
**) AC/DC version was available, sometimes known as EH-160
(one sample can be found in Aspen Pittman\'s book, 3-6C5, 4-26B6, 4-25Z5). 6VDC version was also offered.
***) AC/DC version, known as EH-195 was also available

Early Post-WWII Barnes & Reinecke Amplifiers.
1948 BR-6 modifications within parentheses
1952 Gibson BR6 Tube Amplifier 1952 Gibson BR6 Tube Amplifier - back
click photos for more detail		 Gibson
BR-1 		Gibson
BR-3 		Gibson
BR-4 		Gibson
BR-6/(6F) 		Gibson
BR-9
Speaker 12" field-coil 12" field-coil 12" field-coil 10" field-coil
later permanent magnet 		8" field-coil
Inputs
(instrument. + mic.) 		2+1 2+1 2+1 2 (3) 2
Channels 2 2 2 1 1
Volume Controls 2 2 2 1 1
Tone Controls 1 1 1 No No
Ext. Speaker Jack No No No No No
Tubes          
Preamp. 6SJ7, 6SC7 2-7B4, 6J5 6SJ7, 6SL7 6SL7 (6SJ7) 6SN7
Phase splitter 6SN7 Transformer 6SN7 6SN7 Transformer
Output 2-6L6 2-6V6 2-6V6 2-6V6 2-6V6
Rect. 5U4 5Z4,
6X5 /w f-c spkr 		5Y3 5Y3 5Y3
Watts Output 18   14 10  
Shipping Totals
Model 1946 1947 1948 1949 1950 1951 1952 1953 1954
BR-1 no data no data 214 109          
BR-3 no data no data              
BR-4 no data no data              
BR-6 no data no data 1197 1213 1345 1026 817 870 702
BR-9     2194 1860 2172 1744 1356 1410 1062

 

Early Post-WWII Amplifiers - Second Series and Additions
  Gibson
GA-25 		Gibson
GA-30 		Gibson
GA-50/50T* 		Gibson
GA-CB
Speakers 12" & 8" 12" & 8" 12" & 8" 15" coaxial
woofer-tweeter
w/ dividing network
4 sel. switch
Inputs
(instr. + mic.) 		3+1 3+1 3+1 3+1
Channels 1 2 2 2
Volume Controls 1 2 2 2
Tone Controls 1 1 + bass tone exp. sw. Bass, treble Bass, treble
Tremolo No No *Yes Intens., freq.
Tubes        
Preamp. 6SJ7 2-6SJ7 2-6SJ7 or
*3-6SJ7 & 6SL7 		3-6SJ7, 2-6SQ7
Phase splitter 2-6J5 6SC7 2-6J5 or
*6SN7 		2-6J5
Output 2-6V6 2-6V6 2-6L6 2-6L6
Rect. 5Y3 5Y3 5V4 5T4
Watts Output 15 14   25 30-40

 

Shipping Totals (new style in italics)
Model 1947 1948 1949 1950 1951 1952 1953 1954 1955
GA-25 no data                
GA-30   1023 848 750 690 562 515 203 377
GA-50   114 277 233 168 133 92 35 1
GA-50T   39 344 330 352 244 251 142 15
GA-CB     35 26 24 22 1    

 

Early Post-WWII Amplifiers - Second Series Additions
Gibson GA20 Amplifier Gibson
GA-75/(75W) 		GA-20 GA-90 Gibsonette
Speakers 15" 12" 6-8" 10"
Inputs
(instr. + mic.) 		4+1 3+1 2+2*
*hi-gain sw. 		2
Channels 2 2 2 1
Volume Controls 2 2 2 1
Tone Controls Bass, treble 1 1 (early)
Bass, treble
for ea. ch. 		No
Tubes 7 6 8 4
Preamp. 6SJ7, 2-6SC7 2-6SJ7 2-5879, 12AU7 6SJ7
Phase splitter 6SC7 (12AX7) 6SL7 2-6SN7  
Output 2-6L6 2-6V6 2-6L6 (5881) 2-6V6
Rect. 5V4 5Y3 5V4 5Y3
Watts Output 25 12-14 25 8

 

Shipping Totals
Model 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960
GA-75 101 410 338 274 101 23          
GA-20 935 1381 1390 1411 New style
GA-90       65 333 163 164 124 50 45 3
Gibsonette     637 1051 New style

 

1952-54 The First Les Paul Amps
Gibson Les Paul Amp GA-40
Les Paul 		GA-5
Les Paul Junior
GA-7? L.P. TV model*
Speaker 12" oval 5"x7"
10"*
Inputs
(instr. + mic.) 		3+1 2
Channels 2 1
Volume Controls 2 1
Tone Controls 1 No
Tremolo Speed
3 pos sw. 		No
Tubes 8 3
Preamp. 3-6SJ7,
1/2 6SN7 & 6V6 tremolo 		6SJ7
Phase splitter 1/2 6SN7  
Output 2-6V6 6V6
Rect. 5V4 5Y3
Watts Output 14 4

*) GA-7? See below. Slightly different graphics on control panel,
"Les Paul TV Model", circuitry otherwise identical to Les Paul Junior Model.

Shipping Totals
Model 1952 1953 1954 1955 1956 1957
GA-40 329 1774 1158 929 New style
GA-5     1158 2947 New style
GA-7       1 244 224

 

1954-61 Two-tone and Tweed Amplifiers I
Tweed model designations in italics
  Gibson
GA-77
Vanguard 		GA-70
Country and Western 		GA-55/55V* GA-45T
Maestro Standard
Speakers 15" 15" 2-12" 4-8"
Inputs 2+2 2+2 2+2 2+2
Channels 2 2 2 2
Volume Controls 2 2 2 2
Tone Controls Bass, treble
Tone, fidelity 		Bass, treble, fidelity Bass, treble Bass, treble
Tremolo No No *Vibrato Depth, freq.
Tubes 7 c 6 6 9 7
Ext. Spr. Jack No c yes Yes No No
Monitor Jack Yes c no No No No
Watts Output 25 25 18 14-16

GA-77 Vanguard: 12AY7, 12AX7, 12AU7, 2-6L6, 5V4
GA-70: 12AX7, 12AY7, 12AU7, 2-6L6, 5V4
GA-55: 2-12AY7, 6SC7, 2-6L6, 5V4
GA-45 Maestro: 2-5879, 6SQ7, 12AX7, 2-6V6, 5Y3
(essentially a GA-40 with bass & treble tone controls and different speaker configuration)

Shipping Totals
Model 1954 1955 1956 1957 1958 1959 1960 1961
GA-77 147 247 136 112 143 173 160 102
GA-70   1 159 98 74      
GA-55 1 74 51 56 21      
GA-55V 1 188 117 103 64      
GA-45T   281 606 372 296 270 266 70

 

1954-61 Two-tone and Tweed Amplifiers II
Tweed model designations in italics
Gibson GA40 Amp GA-40T
Les Paul 		GA-30
Invader 		GA-20/20T*
Crest/Ranger 		GA-15
Speakers 12" 12" & 8" 12" 12"
Inputs 2+2 2+2 3+1/*2+2 3+1
Channels 2 2 2 2
Volume Controls 2 2 2 2
Tone Controls 1 1 1 1
Tremolo Depth, freq. No *Depth, freq. No
Tubes 7 6 6/*7 5
Ext. Spr. Jack No No No No
Monitor Jack No No No No
Watts Output 14-16 14-16 12-16 14

GA-40 Les Paul: 2-5879, 12AX7, 6SQ7, 2-6V6, 5Y3
GA-30 Invader: 2-12AX7, 12AU7, 2-6V6, 5Y3
GA-20: 4-12AX7, 2-6V6, 5Y3 (correspond to Epiphone EA-25 Century)
GA-20T: 5879, 12AY7, 12AX7, 6SQ7, 2-6V6, 5Y3 (correspond to Epiphone EA-25T Century)
GA-15: 12AX7, 6SL7, 2-6V6, 5Y3

Shipping Totals
Model 1954 1955 1956 1957 1958 1959 1960 1961
GA-40 1158 929 957 650 501 615 623 515
GA-30 203 377 243 231 146 148 182 78
GA-20 1092 949 756 462 394 349 174 95
GA-20T     338 717 753 1173 701 542
GA-15   110 57   8      

 

1954-61 Two-tone and Tweed Student Amplifiers
Tweed model designations in italics - later additions within parentheses
Gibson Skylark Amp - Front Gibson Skylark Amp - Back GA-9 Gibsonette
GA-8/8T
Discoverer 		GA-6
Lancer
  GA-5/5T*
    Skylark		  
Speaker 10" 10" 12" 8"
Inputs 2 2 3+1
2+2 		2
Channels 1 1 2 1
Volume Controls 1 1 2 1
Tone Controls No (1) No (1) 1 No
Tremolo No *Yes No *Yes
Tubes 4 4 5 3
Watts Output 8-10 8-9 10-14 4 1/2

GA-9: 6SJ7, 2-6V6, 5Y3
GA-8 Gibsonette: 12AX7, 2-6V6, 5Y3
GA-8T Gibsonette/Discoverer: 12AX7, 2-6BM8, 5Y3
GA-6: 12AY7, 6SL7, 2-6V6, 5Y3
GA-6 Lancer: 2-12AX7, 2-6V6, 5Y3 (identical to GA-14 Titan except for 12" speaker)
GA-5 Skylark: 12AX7, 6V6, 5Y3

Shipping Totals (GA-5 Les Paul Junior model in italics)
Model 1954 1955 1956 1957 1958 1959 1960 1961
GA-9 1062 850 991 609 521 286    
GA-8 839 511 442 584 1179 2122 1299 967
GA-8T             1130 1623
GA-6 702 1273 1326 1278 937 1031 518 303
GA-5 1158 2947 2834 3481 3316 5303 3234 2334
GA-5T             123 2094

 

1957 Second Two-tone Series Additions
Tweed model designations in italics - Later changes within parentheses
  GA-400
Super 400 		GA-200
Rhythm King 		GA-46T
Super Maestro 		GA-85
Speakers 2-12"
twin cone 		2-12"
twin cone 		2-12"
twin cone 		12"
Inputs 2+2+2 2+2 2+2 2+2
Channels 3 2 2 2
Volume Controls 3 2 2 2
Tone Controls
Ea. Channel 		Bass, treble Bass, treble Bass, treble Bass, treble
Voicing
Tremolo No No Depth, freq. No
Tubes 12 (11) 11 (10) 10 6
Ext. Spkr. Jack Yes Yes Yes Yes
Monitor Jack No No No Yes
Watts Output 60 60 60 25

GA-400 Super-400: 3-12AX7, 12AY7, 2-6BJ8, 2-6SK7, 6V6, 2-6550, GZ34
GA-200 Rhythm King: 2-12AX7, 12AY7, 2-6BJ8, 2-6SK7, 6V6, 2-6550, GZ34
GA-46T: 3-12AX7, 2-5879, 6SN7, 6V6, 2-6550, 5AR4
GA-85: 2-12AX7, 2-5881, 5V6, 5V4

Shipping Totals
Model 1957 1958 1959 1960 1961
GA-400 15 96 93 112 80
GA-200 22 71 178 265 263
GA-46T 17 69 60 60 53
GA-85 4 56      

 

1959/60 Tweed Series Additions
  GA-100
Bass 		GA-86
Ensemble 		GA-80
Vari-Tone 		GA-18T
Explorer 		GA-16T
Viscount 		GA-14
Titan
Speaker 12" 12" 15" 10" 10" 10"
Inputs 2 2+2 2+2 3 3 2+2
Channels 1 2 2 1 1 2
Volume Controls 1 2 2 1 1 2
Tone Controls
Ea. Channel 		Bass, treble Bass, treble 2
6 pre-sel.sw. 		1 1 1 for
both channels
Tremolo No No No Depth, freq. Depth, freq. No
Tubes 9 7 7 5 5 5
Ext. Spr. Jack Yes Yes No No No No
Monitor Jack No Yes No No No No
Watts Output 35 25 25 14 14 14

GA-100 Bass: 6EU7, 2-6BD6, 2-6FM8, 2-6L6, GZ34, 0A2 (correspond to Epiphone EA-70 Bass-Amp)
GA-86 Ensemble: 2-12AX7, 2-5881, 6V6, GZ34
GA-80 Vari-Tone: 2-12AX7, 2-5879, 2-6L6, GZ34
GA-16T Viscount: 2-12AX7, 2-6V6, 5Y3
GA-14 Titan: 2-12AX7, 2-6V6, 5Y3 (identical to GA-6 Lancer except for 10" speaker, and Epiphone EA-30 Triumph)

Shipping Totals
Model 1959 1960 1961
GA-100   113 246
GA-86 13 22 7
GA-80 282 181 131
GA-18 1421    
GA-18T    1289 883
GA-16T 1092 949 114
GA-14 1 386 106

 

1959-61 Gibson Tweed Stereo Amplifiers
Later changes within parentheses
1961 Gibson GA79RVT
click photos for more detail		 Gibson
GA-83S
Stereo-Vib 		Gibson
GA-88S
Stereo-Twin 		Gibson
GA-87
Stereo Maestro 		Gibson
GA-79RV*/RVT**
Multi-Purpose
GA-78RV
Maestro 30
Speakers 4-8" & 12" 2-12" 2-12" 2-10" 2-10"
Inputs 2 stereo
2 mono 		2 stereo
2 mono 		2 stereo
2 mono 		2+2 mono
1 stereo 		2+2 mono
1 stereo
Channels 2 2 2 2 2
Volume Controls 2 2 2 2 2
Tone Controls
Ea. Channel 		Bass, treble Bass, treble Bass, treble 1 (Bass, treble) Bass, treble
Tremolo Vibrato
depth, freq. 		No No **Depth, freq. No
Reverberation No No No *,**Yes Yes
Tubes 13 8 8 8 (9) 8
Diodes   No   (4)  
Ext. Spr. Jack No No No (Yes) No
Monitor Jack No No No No No
Watts Output 2x18 2x18 2x18 2x15 2x15

GA-83S Stereo-Vib: 4-12AX7, 12AU7, 3-6CG7, 4-6BQ5, GZ34
GA-88S Stereo-Twin: 3-12AX7, 4-6BQ5, GZ34
GA-87 Maestro Stereo: 3-12AX7, 4-6BQ5, GZ34
GA-78 & 79: 4-6EU7, 4-6BQ6
GA-79RVT Multi-Purpose: 3-6EU7, 7199, 12AU7, 4-6BQ5
GA-78RV Maestro 30: 3-6EU7, 7199, 12AU7, 4-6BQ5

Shipping Totals
Model 1959 1960 1961 1962 1963 1964 1965 1966 1967
GA-83S 125 128 26            
GA-88S 97 102 37            
GA-87   10 3            
GA-79 163 47              
GA-79RV     409           1
GA-79RVT     203 335 211 160 128 56 39
GA-78RV   101 38            
GA-78RVT     1   3        
GA-78RVS     105            

 

1961 Tweed Reverb Amplifiers
  GA-1RT
Maestro
 Reverb-Echo 		GA-2RT
Maestro Deluxe
 Reverb-Echo 		GA-77RV
Vanguard 		GA-30RV
Invader 		GA-15RV
Maestro 15RV 		GA-19RVT
Speakers 8" 12" 15" 12" & 8" 12"  
Inputs 2 2+2 2+2 2+2 2+2 2
Channels 1 2 2 2 2 1
Volume Controls 1 2 2 2 2 1
Tone Controls
Ea. Channel 		No 1 Bass, treble
Tone 		1 for
both channels
High-low tone exp. sw. 		Bass, treble 1
Tremolo Speed Speed, depth No No No Speed, depth
Reverberation Yes Yes Yes Yes Yes Yes
Tubes 3 7 6 6 7 7
Ext. Spr. Jack No No No No No No
Monitor Jack No No No No No Yes
Watts Output 8 16 25 16 14-16 14

GA-1RT: 12AX7, 6BM8, 5Y3
GA-1RVT: 6EU7, 7199, 6BM8, 5Y3 (Aka Maestro M-1RVT)
GA-2RT: 4-6EU7, 12AU7, 2-6V6, 5Y3
GA-77RV Vanguard: 3-6EU7, 1-12AU7, 2-6L6GC, 1-GZ34 (5AR4)
GA-30RV Invader: 3-6EU7, 12AU7A, 2-6V6, 5Y3
GA-15RV: 3-6EU7, 12AU7, 2-6V6, 5Y3
GA-19RVT: 3-6EU7, 7199, 2-6V6, 5Y3

Shipping Totals
Model 1961
GA-1RT 2183
GA-2RT 396
GA-77RV 337
GA-30RV 715
GA-15RV 135
GA-19RVT 204
GA-45RV 106

 

1962 Crestline Amplifiers
Gibson GA-5T Amplifier- Photo courtesy Bill Sherman GA-40T
Les Paul 		GA-60
Hercules 		GA-18T
Explorer 		GA-8/8T*
Discoverer 		GA-5/5T*
Skylark
Speaker 12" 15" 12" 12" 10"
Inputs 2+2 2 3 2 2
Channels 2 1 1 1 1
Volume Controls 2 1 1 1 1
Tone Controls
Ea. Channel 		1 Bass, treble Bass, treble Bass, treble No
Tremolo Depth, freq. No Depth, freq. *Depth, freq. *Freq.
Reverb No No No No No
Ext. Spr. Jack No No No Yes No
Monitor Jack No No Yes Yes No
Tubes 6 5 5 5 5
Diodes 1 3 0 0 0
Watts Output 25 25 15 15 10

GA-40T Les Paul: 3-6EU7, 12AU7, 2-7591, 5AR4
GA-60 Hercules: 2-6EU7, 2-7591, 5AR4 (correspond to Epiphone EA-65 Rivoli)
GA-18T Explorer: 2-6EU7, 2-6BQ5, 6CA4
GA-8 Discoverer: 6EU7, 6C4, 2-6BQ5, 6CA4 (correspond to Epiphone EA-35 Devon)
GA-8T Discoverer: 2-6EU7, 2-6BQ5, 6CA4 (correspond to Epiphone EA-35T Devon)
GA-5 Skylark: 6EU7, 6C4, 2-6AQ5, 6X4 (correspond to Epiphone EA-50 Pacemaker)
GA-5T Skylark: 2-6EU7, 2-6AQ5, 6X4 (correspond to Epiphone EA-50T Pacemaker) Courtesy of Allan Fredrickson.

Shipping Totals (new style in italics)
Model 1962 1963 1964 1965 1966 1967
GA-40T 413 345 184 29 14 1
GA-60 263 230        
GA-18T 690 230        
GA-8 841 188        
GA-8T 1458 1419 1769 1127 6  
GA-5 2431 2306 3540 3669 1528 1009
GA-5T 2249 2463 3499 4353 3521 1006

 

1962 Crestline Tuck-away Amplifiers
  GA-400
Super 400 		GA-300RVT
Super 300 		GA-200
Rhythm King 		GA-100
Bass Amp
Speakers 2-12" 2-12" 2-12" 15"
Inputs 2+2+2 2+2 2+2 2
Channels 3 2 2 1
Volume Controls 3 2 2 1
Tone Controls
Ea. Channel 		Bass, treble Bass, treble Bass, treble Bass, treble
Tremolo No Depth, freq. No No
Reverb No Yes No No
Compression No Yes No No
Ext. Spr. Jack No No No No
Monitor Jack Yes Yes Yes No
Tubes 6 8 6 6
Diodes 8 6 8 3
Watts Output 60 60 60 35

GA-300RVT: 2-6EU7, 3-12AU7, 7199, 2-6L6, 0A2

Shipping Totals
Model 1962 1963
GA-400 89 52
GA-300RVT 220 321
GA-200 267 302
GA-100 227 251

 

1962 Crestline Amplifiers with Reverberation
Features added after 1963/64 within parentheses
  GA-77RVT/RVTL*
Vanguard 		GA-30RVT
Invader 		GA-19RVT
Falcon
Speakers 15"
*JBL 		12" & 10" 12"
Inputs 2+2 2+2 2
Channels 2 2 1
Volume Controls 2 2 1
Tone Controls
Ea. channel 		Bass, treble (mid) 1 (bass, mid, treble) 1
Tremolo Depth, freq. Depth, freq. Depth, freq.
Reverb Yes Yes Yes
Stereo No No No
Ext. Spr. Jack No No No
Monitor Jack Yes Yes Yes
Tubes 8 8 (9) 7
Diodes 5 1 (3) 0
Watts Output 50 25 15

GA-77RVT Vanguard: 4-6EU7, 12AU7, 7199, 2-6L6
GA-30RVT Invader: 4-6EU7, 12AU7, 2-7591, 5AR4 (most likely corresponding to Epiphone EA-12RVT Futura)
GA-30RVT Invader: 4-6EU7, 2-12AU7, 2-7591, 0A2
GA-19RVT Falcon: 3-6EU7, 6C4, 2-6V6, 5Y3 (both brown and late black models correspond to
Maestro M-216RVT and Epiphone EA-28RVT Pathfinder) Courtesy of Matt Lafferty and Jonathan Horne.
GA-19RVT Falcon: 3-6EU7, 7199, 2-6V6, 5Y3

Shipping Totals
Model 1962 1963 1964 1965 1966 1967
GA-77RVT 160 267 321 143 13 15
GA-77RVTL 41 99 106 51 12 1
GA-79RVT 335 211 160 128 56 39
GA-30RVT 193 615 938 840 12 3
GA-19RVT 2362 3761 4363 3212 8 4

 

1963 Crestline Additions
  GA-77RET/RETL*
Vanguard 		GA-75/75L*
Recording 		GA-25RVT
Hawk 		GA-17RVT
Scout
Speakers 2-10" or
*15" JBL 		2-10" or
*15" JBL 		15"
(2-10") 		10"
Inputs 2+2 2+2 2+2 2
Channels 2 2 2 1
Volume Controls 2 2 2 1
Tone Controls
Ea. channel 		Bass, mid, treble Bass, treble Bass, treble None
Tremolo Depth, freq. No Depth, freq. Freq.
Reverb Yes No Yes Yes
Ext. Spr. Jack No No No No
Monitor Jack Yes Yes Yes No
Tubes 9 6 7 6
Diodes 3 (+2 zener) 3 0 0
Watts Output 25 25    

GA-77RET/RETL Vanguard: 3-6EU7, 2-12AU7, 6CG7 (6FQ7), 2-6L6, 0A2
GA-75 Recording: 2-6EU7, 6CG7 (6FQ7), 6C4, 2-6L6
GA-25RVT Hawk (Dated Oct \'63 - only one tone-control): 4-6EU7, 12AU7, 2-6V6, 5Y3
GA-25RVT Hawk: 2-6EU7, 3-12AU7 (5814), 2-7591
GA-17RVT Scout: 2-6EU7, 12AX7, 2-6AQ5, 6CA4 (correspond to Epiphone EA-33RVT Galaxie)

Shipping Totals (new style in italics)
Model 1963 1964 1965 1966 1967
GA-77RET 32 288 73 67 1
GA-77RETL 2 107 41 30 1
GA-75 58 91 17 15 1
GA-75L 13 25 16 20 1
GA-25RVT 336 1681 1746 18 1
GA-17RVT 527 2475 2193 1 1

 

1963 Power Plus Amplifiers
  Titan
I, III, V 		Mercury
I, II 		Atlas
IV
Speakers I 2-12"
III 15" & 2-10"
V 2-15" JBL 		I 2-12"
II 15" & 10" 		15"
Inputs 2+2 2+2 2
Channels 2 2 1
Volume Controls 2 2 1
Tone Controls
Ea. channel 		Bass, mid, treble Bass, mid, treble Bass, treble
Tremolo Depth, freq. Depth, freq. No
Reverb No No No
Tubes 11 7 (8) 5
Diodes 3 5 (3) 5 (3)
Watts Output   65   35   50

Titan: 3-6EU7, 2-12AU7, 6FQ7, 4-6L6, 0A2 (12AU7 splitter, 6FQ7 driver)
Mercury: 6EU7 splitter, 6FQ7 driver and 2-6L6 output
Titan I, III, V and Medalist: 3-6EU7, 2-12AU7, 6FQ7, 4-6L6, 0A2 (correspond to Epiphone EA-500T)
Mercury I, II and Medalist (sloping sides): 2-6EU7, 6C4 and 1/2-6EU7 tremolo, 1/2-6EU7 splitter, 6FQ7 driver and 2-6L6 output, 0A2
Courtesy of James Black.
Atlas IV and Medalist: 2-6EU7, 6C4, 2-6L6 (correspond to Epiphone EA-71/72 Constellation)

Shipping Totals (new style in italics)
Model 1963 1964 1965 1966 1967
Titan I 29 172 52   2
Titan III 24 189 67 95 24
Titan V 27 43 42 52 27
Mercury I 118 408 115 2  
Mercury II 55 365 93 150 40
Mercury II L         6
Atlas IV 167 860 271 428 186
Atlas IV L         37

 

1964 Medalist Amplifiers
Gibson Atlas Medalist Amp - Photo: David Marion
Click Photo for larger view		 Titan
Medalist 		Mercury
Medalist 		Atlas
Medalist
Speakers 15" & 10" 15" & 10" 15"
Inputs 2+2 2+2 2
Channels 2 2 1
Volume Controls 2 2 1
Tone Controls
Ea. channel 		Bass, mid, treble Bass, mid, treble Bass, treble
Tremolo Depth, freq. Depth, freq. No
Reverb No No No
Tubes 11 8 5
Diodes 3 3 3
Watts Output 50 35   50

Combo varieties of above Power-Plus amps

Shipping Totals (new style in italics)
Model 1964 1965 1966 1967
Titan Med. 66 51 25 6
Mercury Med. 155 168 3 1
Atlas Med. 297 491 385 155

 

1965/66 White control Panel (Coarse Black Tolex) Amplifiers I
1965 Gibson GA45RVT Tube Amp GA-77RET/RETL*
Vanguard 		GA-95RVT
Apollo 		GA-55RVT
Ranger 		GA-45RVT
Saturn
Speakers 2-10" or
*15" JBL 		2-12" 4-10" 2-10"
Inputs 2+2 2+2 2+2 2+2
Channels 2 2 2 2
Volume Controls 2 2 2 2
Tone Controls
Ea. channel 		Bass, mid, treble Bass, mid, treble Bass, mid, treble Bass, treble
Jazz switch Yes Yes No No
Presence Switch No 2 2 2
Tremolo Yes Yes Yes Yes
Reverb Reverb/echo Yes Yes Yes
Ext. Spr. Jack Yes Yes Yes Yes
Monitor Jack Yes No Yes No
Tubes 9 10 9 9
Diodes 5 3 3 3
Watts Output 25   90    

GA-77RET Vanguard: 3-6EU7, 2-12AU7, 6CG7 (aka 6FQ7), 2-6L6, 0A2
GA-95RVT Apollo: 2-6EU7, 2-12AU7, 12AX7, 4-6L6, 0A2 (correspond to Epiphone EA-300RVT Embassy)
GA-55RVT Ranger: 4-6EU7, 12AU7, 6CG7 (aka 6FQ7), 2-6L6, 0A2
GA-45RVT Saturn: 4-6EU7, 12AU7, 6CG7 (aka 6FQ7), 2-6L6, 0A2 (correspond to Epiphone EA-14RVT)

Shipping Totals
Model 1965 1966 1967
GA-77RET 288 73 67
GA-77RETL 107 41 30
GA-95RVT 98 403 247
GA-95RVTL   4 20
GA-55RVT 284 1102 600
GA-55RVTL     101
GA-45RVT 500 1364 660
GA-45RVTL     14

 

1965/66 White Control Panel (Coarse Black Tolex) Amplifiers II
1965 Gibson GA20RVT Minuteman Tube Amp GA-35RVT
Lancer 		GA-20RVT
Minuteman 		GA-15RVT
Explorer 		GA-5/5T*
Skylark
Speaker 12" 12" 10" 10"
Inputs 2+2 2+2 3 2
Channels 2 2 1 1
Volume Controls 2 2 1 1
Tone Controls
Ea. channel 		Bass, treble Bass, treble Bass, treble Bass, treble
Tremolo Yes Yes Yes No/*Yes
Reverb Yes Yes Yes No
Ext. Spr. Jack Yes No Yes No
Monitor Jack No No No No
Tubes 8 7 5 3/*4
Diodes 3 2 2 2
Watts Output   35   12.5   12.5 4.5

GA-35RVT Lancer: 2-6EU7, 12AX7, 2-12AU7, 2-7591, 0A2 (correspond to Epiphone EA-16RVT Regent)
GA-20RVT Minuteman: 3-6EU7, 2-12AU7, 2-6BQ5 (correspond to Epiphone EA-26RVT Electra)
GA-20RVT Minuteman: 2-6EU7, 3-12AU7, 2-6BQ5 (notice that 6EU7 and 12AU7 have different pin-outs)
GA-15RVT Explorer: 2-6EU7, 12AU7, 2-6BQ5 (correspond to Epiphone EA-32RVT Comet)
GA-5 Skylark: 6EU7, 6BQ5, 6X4

Shipping Totals
Model 1965 1966 1967
GA-35RVT   1736 586
GA-20RVT 1005 3240 1212
GA-15RVT 892 4350 761
GA-5 4353 3521 1006
GA-5T 3669 1528 1009

 

2005-  Modern Amplifiers
Gibson GA_RVT Amp
         GA-5           
 
GA-20RVT
 		 GA-40RVT GA-42RVT
Speaker 8" 12" Eminence 12" Eminence 2x12" Eminence
Inputs 2 2+Mix 2+Mix 2+Mix
Channels 1 2 2 2
Volume Controls 1 2 2 2
Tone Controls
Ea. channel 		None Bass, Treble
Bass, Mid, Treble		 Bass, Treble
Bass, Mid, Treble		 Bass, Treble
Bass, Mid, Treble
Tremolo No Yes Yes Yes
Reverb No Yes Yes Yes
Ext. Spr. Jack No Yes Yes Yes
Monitor Jack No No No No
Tubes 2 7 7 7
Tolex / Cab Vintage Cream Tolex
or Clear Plexiglas		 Two-tone vintage brown and tan
 Tolex		 Two-tone vintage brown and tan
 Tolex		 Two-tone vintage brown and tan
 Tolex
Watts Output
(Switchable)		 5 W 15W Pentode
6 W Triode		 30W Pentode
15 W Triode		 30W Pentode
15 W Triode
Gibson GA-5 Les Paul Jr Plexi Amp        

GA-5  Les Paul Jr :  1-12AX7, 1-EL84
GA-20RVT 5-12AX7, 2-6V6
GA-40RVT 5-12AX7, 2-6L6
GA-42RVT 5-12AX7, 2-6L6