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GRANT LUMLEY GL-100A - Audio Database

    https://audio-database.com/GRANT%20LUMLEY/amp/gl-100a-e.html
    Audio Database. GRANT LUMLEY GL-100A. 580,000yen i1980 release j. Description. @. English grand Lumley's stereo power amplifier started under the …

Grant Lumley Audio GL100P Control Unit Valve Preamp - …

    https://www.youtube.com/watch?v=rkZq6BkYwYU
    Grant Lumley Audio GL100P Control Unit Valve Preamp KEF Q350 SPEAKER

GRANT LUMLEY GL-50A - Audio Database

    https://audio-database.com/GRANT%20LUMLEY/amp/gl-50a-e.html
    GRANT LUMLEY GL-50A. English grand Lumley's stereo power amplifier started under the close relation with The M-O Valve Company famous as a vacuum tube maker. KT-77 of the "gold lion" brand made from a M-O valve company is used for the output pipe. It has ultra linear connection and the 1st class of AB push pull composition of a fixed bias system.

KEF Q750 and Grant Lumley Audio GL100P Control Unit …

    https://www.youtube.com/watch?v=KTy9Z2I4gro
    Old British SoundSpeaker : KEF Q750

Defunct Audio Manufacturers - Gl to G9 - audiotools.com.

    http://audiotools.com/en_dead_gf.html
    The company changed its name to Grant Lumley Audio (Products) Limited The power amps from the company all had for the time unusually large output transformers, the GL-100 model for instance was almost 34 kilograms on its own, this made them for a time popular amongst owners of Apogee loudspeakers since it meant they could handle difficult loads ...

GRANT LUMLEY AUDIO GL50A VALVE POWER AMPLIFIER - Made …

    https://picclick.de/GRANT-LUMLEY-AUDIO-GL50A-VALVE-POWER-AMPLIFIER-265013233490.html
    GRANT LUMLEY AUDIO GL50A VALVE POWER AMPLIFIER - Made in England - fully working - EUR 1.454,11. FOR SALE! GRANT LUMLEY AUDIO GL50A VALVE POWER AMPLIFIER - Made in England - 265013233490

That's a Roy Grant design formerly of “Grant-Lumley” made ...

    https://www.audioasylum.com/forums/amp/messages/15/155973.html
    There was a rather bitter business breakup between Roy Grant and Ray Lumley back in the early 1980s when they had a bit of buzz in the industry with their GL-100 mono amp, when it was still “Grant-Lumley” days. Separately, both went on to design and market their respective audio lines in the UK throughout the 1980s and 90s.

Defunct Audio Manufacturers L - audiotools.com.

    http://audiotools.com/en_dead_l.html
    Lumley See --> Grant Lumley (UK - 70's to 1993) -- Reference International (UK - 1994 to 1997) -- or Lumley Loudspeakers (Below) Lumley Loudspeakers Limited A company based in Bexhill on Sea, in Sussex, England that took over the manufacture of Lumley branded loudspeakers after the demise of Reference International.

Ray Lumley M-100 tube mono power amplifiers – NEAR MINT ...

    https://www.canuckaudiomart.com/details/649012315-ray_lumley_m100_tube_mono_power_amplifiers_r_near_mint/
    History of Ray Lumley retrieved from eBay: First examples of this amplifier design [the Grant Lumley 100AM] were introduced to the hi-end audio scene way back in the early 1980's when Mr. Harry Pearson of the Absolute Sound reviewed a pair [issue 21&22] stating: "The Lumley's are a far better amplifier than the ARC D-79b".

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