B-52 Professional Guitar ST-Series

ST-100A I ST-60A I ST-6012 I ST-412V & ST-412S I ST-212S
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ST-100A: 100-watt all-tube amplifier with tri-mode rectifier
The ST-100A all-tube amplifier features a 100% pure all-tube signal path, incredible tone and a wide array of guitarist friendly features. The ST-100A has two channels of outstanding tone, versatility and power. Clean and Overdrive channels include their own sets of gain, treble, mid and bass equalization controls for maximum flexibility. A 3-position rectifier switch allows the alteration of attack, feel and warmth of tone. A heavy-duty footswitch is included.

ST-100A features and specifications

• All-Tube signal path
• Overdrive Channel: Gain 1,
Gain 2 with contour, 3-band EQ
and level control
• Clean Channel: Level control and 3-band EQ
• Rectifier Select: Tube - Class A or AB,
Solid-state - Class AB
• Effects send and return with level controls
• Pushswitch for channel and gain select
• Master volume
• Spring reverb
• Headphones line out

• Porcelain tube sockets for
increased reliability
• Line out with level control
• Selectable 4/8/16 ohms external
speaker jacks
• Ground lift switch
• Rugged foot switch for channel select,
reverb on/off and gain select
• Rugged 3/4” Baltic birch construction
• Dimensions: 27" x 11" x 11"
• Weight: 56 lbs
The ST-100A features rock-solid 13-ply Baltic birch construction
ST-100A Tube Chart
4 – 6L6 / 5881
5 – 12AX7
1 – 12AT7
1 – 5AR4

B-52 Professional, 3383 Gage Ave, Huntington Park, CA, 90255 I Toll Free (US): 800-344-4384 I Ph: 323-277-4100 Fax: 323-277-4108
Copyright © 2007: ETI Sound Systems, INC