The Guild Quantum bass amp Delivers that hard-driving, up-front, "Motown"-type sound - without going through the engineers control board
Initially there was just one version of the Quantum amplifier, with two more models being added to the range in 1969. Each used the same amplifier (head), but with differing quality speaker cones within the cabinet. All were suitable for the bass guitar and organ, with the Quantum X also suitable for electric guitar.
This amplifier was heavily promoted at the time; see the vintage Guild Quantum amp advertisements.
|Model||Quantum X||Quantum Bass Deluxe||Quantum Bass Standard|
|Power Output||200W (100W RMS)|
|Tubes||3-12AX7/7025, 1-7247, 2-8417|
|Speakers||2 15" J.B. Lansing D 130F||2 15" J.B. Lansing D 140F||2 15" heavy duty|
|Channels||2 channels (4 inputs)|
|Controls||Volume, bass, treble controls and 3-position tone switch for each channel. Master volume and standby.|
|Dimensions||head: 10 1/2" high, 21 1/2" wide, 11 1/2"deep|
cabinet: 45" high, 30" wide, 11 7/8"deep
In comparison, the May 1969 Fender price list has a Fender Bassman amplifier with 2 15" J.B. Lansing D 140F speakers listed at $699.50, and another with 2 15" 'heavy duty' speakers at $539.50
This amplifier was endorsed by numerous acts, including The Blues Project, Blood Sweat and Tears, and Buddy Guy; all of whom appeared in the related advertising for this amplifier.
Amplifier advertisements originally published from 1967 onwards. Click on the images for larger copies. Check out other vintage Guild advertisements
Guild Quantum - Guild Quantum Bass Amplifier (1967)
Delivers that hard-driving, up-front, "Motown"-type sound - without going through the engineers control board
1967 add showing two members of the Blues Project; Steve Katz playing a Guild Starfi...
Guild Quantum - Guild Quantum Amplifier (1969)
Features the Guild Quantum amplifier M85 bass guitar, M75 electric guitar and electric organ with rotoverb
The Total Amplifier - for Bass, Organ and Guitar. 200 watts of clean undistorted po...
Guild Quantum - Blood, Sweat & Tears. Jim Fielder (1969)
Late sixties advert for the Guild Quantum bass amplifier range, featuring Jim Fielder, bassist with the band Blood, Sweat and Tears
Guild Quantum - Guild Amplifiers (1970)
We build them great like we build our guitars
Advert for the following Guild guitar, bass and PA amps: Thunderstar bass, ThunderBass 1-A, Seven-forty-seven, Quantum X, CS-100 sound column, Thund...
Guild Quantum - Buddy Guy Blues Band (1970)
1970 Guitar Player advert featuring Buddy Guy's band - Buddy uses a Starfire SF IV through a Thunderbird guitar amp. The bass player uses a Starefire SF bass through a Quantum X amplifier