Dating of fender amplifiers

24 Mar

5B6 Bassman amplifiers had two 6SC7 or 6SL7GT pre-amp tubes, two 5881 power tubes and a single 5U4G rectifier tube.It was designed to generate 26 watts at an 8 ohm impedance load, and offered a cathode-based bias.This 45W, all-tube combo with 4 x 10" Jensen speakers, tube reverb, and vibrato has long been considered one of the best amps to "crank up" for unmiked club gigs or on the concert stage. They do have PCBs (Printed Curcuit Boards), as opposed to the original's "hand-wired" circuitry, but the components (capacitors and resistors) are the same values as amps from that period.They also have hand-wired tube sockets and other parts for added strength.

and these changes are often disclosed and of a non-malicious nature.

Tonal Characteristics: Bright, scooped midrange that is known as the "Blackface" sound, pronounced "Wine Glass" highs from the Jensen speakers and a slightly more polite power amp for crystal cleans that can also be cranked for great overdriven tones.

Who's it for: Players that love the original versions but are priced out of owning vintage amps, blues players, country players, rock players, guitarists trying to get classic "Blackface" sounds (a la Stevie Ray Vaughan, Jimi Hendrix, John Mayer), American-made amp enthusiasts, traditionalists, avid Fender collectors.

Fender ceased production of 5B6 Bassman amplifiers during the spring of 1954.

During November 1954, Fender introduced the newly designed 5D6 Bassman amplifier offering four ten inch speakers and was designed utilizing two rectifier tubes.