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BGW 100

Stereo Power Amplifier

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BGW 100


The BGW Model 100 is the most advanced dual solid state power amplifier available.

The basic design criteria used are those which are applied to present day computers and other related equipment.

The mechanical construction of the Model 100 features an all steel, welded chassis for maximum strength and rigidity.

The unit has an internal switch which instantly converts it from a two channel stereo amplifier to a bridge-connected monaural amplifier.


  • Power output: 30 watts per channel into 8Ω (stereo), 80W into 8Ω (mono)

    Frequency response: 20Hz to 20kHz

    Total harmonic distortion: 0.1%

    Damping factor: 200

    Gain: 26 dB

    Input sensitivity: 0.78V

    Signal to noise ratio: 106dB

    Speaker load impedance: 4Ω (minimum)

    Semiconductors: 2 x IC, 20 x transistors, 4 x zener diodes, 4 x diodes

    Dimensions: 1.75 x 19 x 12 inches

    Weight: 18lbs

  • Power output: 50 watts per channel into 8Ω (stereo), 120W into 8Ω (mono)

    Frequency response: 20Hz to 20kHz

    Total harmonic distortion: 0.1%

    Damping factor: 400

    Gain: 26 dB

    Input sensitivity: 1V

    Signal to noise ratio: 106dB

    Speaker load impedance: 4Ω (minimum)

    Dimensions: 445 x 483 x 292mm

    Weight: 8.2kg



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Reviewed Jan 22nd, 2020 by

If you want a 1 space rack, excellent sound and first rate parts like breaker, switches, transformer etc you should consider this baby.
Of course is a 30-50 watt amp but low powered amps tends to sound more transparent than high power amps because it only use a couple of output transistors.
Build quality is first rate.



re: 100

I picked up a 100B back in the early eighties , in a thrift store for $20.oo .
Transformer hums , but the sound is comparable to the Bryston 2b , stereo and mono, the owner of the Bryston . a real Fanboy , was not amused at all !

Parts are easily sourced and these little amps will run FOREVER !

jack charles's picture

re: BGW 100

It appears BGW distributed variations to the 100. I have a BGW 100B amplifier. The specs for power are greater. 100 series is rarted at 33w stereo and my 100B is rated for 50w stereo with corresponding increases for the other connections. I was not the first owner. Mine came from a civil service retired Pentagon accountant. He said these amps were installed in the White House in the 70's. Interesting story, right?

dafe's picture

re: BGW 100

Interesting. Mine is rated 50w/ch, hums mechanically but that doesn't bother me too much. It sounds great on JBL lancer 100 (these folks with the 14" woofer and the heavyweight cone tweeter), even better than my old Quad 303, which is not exactly marmalade in it's own right. It's the original Dolby THX combo, JBL/BGW, isn't it?
I got it from the not-so-pentagon Mr. Hammill of VanDerGraaf when he made his vide grenier..).

This website is not affiliated with or sponsored by BGW. To purchase 100 spares or accessories, please contact the company via their website or visit an authorised retailer.