Dating fender stratocaster serial
Production years 1964 -1967 “blackface” circuits AA864, AA165, AB165 1967 -1977 “silverface” circuits AA165, AB165, AA270, AA371, AA568, AC568, AA864 Tube layout AA864 Tube layout (Seen from behind, V1 is to the right side): V1 12ax7 = Preamp bass channel V2 12ax7 = 2’nd gain stage bass channel (and normal channel for AB165) V3 12ax7 = Preamp normal channel V4 12at7 = Phase inverter V5 6L6 = Power tube #1 V6 6L6 = Power tube #2 Summary The Fender Bassman is a legendary guitar amp known to both guitar and bass players.
It was introduced in 1951, primarily targeted for bass guitar players and promoted as a bass amp for the Fender Precision Bass guitar, the first mass-produced electric bass guitar ever.
The bassman was a combo amp in the tweed era with the 1×15″ and 4×10″ speaker configurations.
– Between the second preamp tube (V2) and the phase inverter circuitry, replace the 0.1u F coupling cap with a 500 p F.
A couple of things in the circuitry were immediately changed in 1965 when the AA165 and AB165 replaced the AA864.
Amp collectors and idealists often prefer the pre-CBS models but if we study the AB165 circuit it does have something very interesting for guitar players who enjoy cranked Fender blackface tones.
We’ll come back to this later in the “blackface chapter” below where we’ll demystify some of the hypes with the popular AA864.
The AA165 is very rare and its circuit and tone is quite similar to the AA864.