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Roland GR-77B Bass Guitar Synthesizer

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    Description
    In 1986 Roland introduced the GR-77B Bass Guitar Synthesizer. Similar in style and function as the GR-700 guitar synthesizer, the GR-77B is a 4 voice pedal hybrid synthesizer unit based on the Roland JX-8P sound engine and has 4 processors. One for each string to facilitate fast tracking. The instrument also has two 4 stage envelope generators and cross modulation between oscillators, frequency modulation with envelope and/or modulation.

    Additionally the GR-77B has a low pass filter with LFO, envelope and pitch modulation as well as a variable high pass filter. There is also an additional LFO for vibrato effects.The 11 built in foot switches can be used for programming the synthesizer or deeper program editing can be achieved using the optional PG-800 programmer. Moreover the GR-77B also features a MIDI out for control other synthesizers and equipment

    The GR-77B also has it's own bass guitar controller. The GR-77 which features the same design and functionality as the GR-707 guitar controllers. Similar in shape like the G-707 the GR-77 controller has a stabilizer bar running across the entire body and neck to add more stability for tracking of notes across the fretboard.

    The unit also has a lush analog chorus mode and features delectable pitch bend, hold and voices can be individually turned off for each string. Finally the GR-77 controller also functions as a traditional bass guitar and can be played by itself or combined with the GR-77B synthesizer.

    Images
    Architecture
    Type: Analog
    Synthesis: Subtractive
    Oscillators
    Oscillators: 2
    Waveforms: Pulse, Saw Up, Square, White Noise
    Osc Modulation: Envelope, Glide / Portamento, LFO, Pedal
    Envelopes
    Envelopes: 2
    Evelope Paramerters: Attack, Decay, Sustain, Hold, Release
    Filters
    Filters: 2
    Types: High Pass, Low Pass, Resonance
    Filter Modulation: Envelope, LFO, Pedal
    LFO
    LFO: 1
    Polyphony & Tuning
    Polyphony: 4
    Modes: Mono, Polyphonic
    Patches
    Patches RAM: 32
    Patches ROM: 32
    Storage: Internal, RAM Cartridge, ROM Cartridge
    Editing: DIN
    Effects
    +Lush analog chorus
    Case
    Case: Pedal
    Case Details: +11 foot switches & Bass Guitar Controller
    Keyboard: Metal, Plastic
    Controls: Buttons, Mod - Wheel 2, Modulation 1/4" Jacks, Pedal - Control
    Display Type: LED
    Display Count V: 4
    Display Notes: 7
    Dimensions (WxDxH): 27 3/16 x 14 3/4 x 6 1/8 in
    Weight: 26 lbs. 8 oz.
    Connections
    Audio Output Connections: 1/4" Phone Jack, XLR, Mono Out
    Audio Output Count: 3
    MIDI Ports: OUT
    CV Ports: DIN, CV IN
    Power: 45 w
    Production
    Year Released: 1986
    Manuals & Documents

    Product Links
    Company Product Sites:
    Pricing
    Used Price: $239-$1,650 - convert
    Shopping
    YouTube Videos
    Related Synthesizers
    GR-300 (1980)
    GR-500 (1977)
    GR-700 (1984)


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