Dual Monoblock Amplifier 9100

Marshall (Brand), Marshall, J & T, (Musical Instruments) Ltd.; Hanwell & Bletchley

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  • Year
  • 1993 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 347343

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 8
  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 50 or 60 Hz, 115 or 230 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 100 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Dual Monoblock Amplifier 9100 - Marshall Brand, Marshall, J &
  • Shape
  • Boatanchor (heavy military or commercial set >20 kg).
  • Dimensions (WHD)
  • 482.6 x 133.5 x 331 mm / 19 x 5.3 x 13 inch
  • Notes

  • The Marshall 9200 and 9100 were valve power amplifiers introduced by Marshall in 1993 as part of their rack technology line.

    These amplifiers were designed as dual monoblocs, offering a unique stereo configuration in a single unit.

    Key Features

    • Dual Monobloc Design: Both models featured a dual monobloc configuration, which was considered a notable feature at the time
    • Stereo Operation: The amplifiers were designed for stereo use, with each channel operating independently
    • Valve Technology: These amplifiers utilised vacuum tube (valve) technology, continuing Marshall's tradition of tube-based amplifiers

    9100 Model​ Specifications

    • Power output: 2 x 50 watts
    • Tube configuration: 4 x 5881 power tubes
    • Dual monobloc design with independent channels
    • Each channel features:
      • Power switch
      • Standby switch
      • Voice toggle switch
      • Presence control
      • Gain control
    • Gold front panel with recessed controls
    • Removable top half with window for valve visibility and access
    • Remote voicing switching capability
    • Output impedance options: 16 ohm or 8 ohm
    • Rack-mountable: 19" 3U x 331mm deep
    • Weight: Approximately 28.5 kg

    Despite their powerful output and high-quality sound, the substantial weight of these units, particularly the 9200, was noted as a potential drawback.
    Over time, Marshall made changes to these models. At some point after their introduction, they switched from the original tube configuration to using EL34 tubes in a 100/100-watt configuration for the 9200 and a 50/50-watt configuration for the 9100

    The Marshall 9200 and 9100 represented Marshall's foray into high-powered, rack-mountable tube amplifiers, offering guitarists a combination of traditional valve tone and modern stereo capabilities in a professional-grade package.

    Note: Output tube types 5881 or EL34 should not be mixed.

  • Net weight (2.2 lb = 1 kg)
  • 28.5 kg / 62 lb 12.4 oz (62.775 lb)
  • Mentioned in
  • - - Manufacturers Literature (Marshall Valve Power Amps 9100 & 9200 Handbook Jan 99.)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Marshall Advertising Pamphlet 1993.)
  Marshall 9100 and 9200 Handbook. 304 KB
  • Documents regarding this model
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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