Effect Information

“Yamaha G100-112 (100 watt
solid state amp with a HD 12″ speaker), year of manufacture probably in the 1980s. This is another love of my life. This amp is great and damn loud, in
fact it’s known for getting way loud and staying way clean (on the
clean channel). There is also a distortion channel controlled via
foot switch. It’s got a volume knob with a FAT setting, a gain knob with
a FAT setting, # band EQ with BRIGHT setting, and a sweet parametric
EQ. It also has built in verb settings.”

Very interesting amp

  • The parametric EQ is definitely one of the unique features of this amp
  • What a workhorse
  • Crafted in the late 70s – early 80s
  • It has two channels — one clean — one overdrive — with a foot switch which also has reverb control
  • It has an output for an auxiliary speaker, a direct out and even a grounded outlet in the back
  • Not noisy and very clean


More information from another online listing


Features:

  • 10 silver and black knobs
    (pull FAT VOLUME, pull FAT GAIN, MASTER VOL., pull BRIGHT TREBLE,
    MIDDLE, BASS, PARAMETRIC EQ (Level, Q, frequency 500), and REVERB. All
    knobs are all functioning properly and no damage.
  • 120volts, 180watts and 60hz
  • 1 or 2:4 ~ 8 OHMS/SPEAKER
  • 1 + 2:8 ~ 16 OHMS/SPEAKER
  • MAX RMS OUTPUT 100 WATT
  • CLASS2 WIRING MAYBE USEDClass two wiring maybe used (whatever that means?)

Speaker:

  • Speaker size is 12 inches diameter YAMAHA
  • JA3063 is the model number
  • RMS Power Rating — 100 W
  • Impedance 8 ohms
  • Peak power rating — 300 W
  • Made in Nippon Japan

Some good discussion on this amp found here also.


These originally sold with a foot switch and vinyl cover. That high sale price of $301.51 was on July 6, 2011. The low price was from 2008. A nice sounding and responsive amp.

Archived past online sales data:

Effectsfreak legacy website (includes sales data 4/2008 - 4/2021)

Deluxe Memory Man Solid State Echo/Analog Delay Line (V1) (Blue & Red Graphics w/Silver Case) & Original Box
OD-1 (Over Drive) (1988) Japan/Black Label/Black Screw w/Original Packaging & Unknown Chip Configuration

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