Да Гилмор и не только в разные годы разные ампы использовали.Вот например его стафф на студии в 70х
http://www.gilmourish.com/?page_id=17 Guitars and amps recording sessions
Fender Stratocaster “The Black Strat”
- 1969 black alder body with a black pickguard, ‘63 rosewood neck and Fender 1971 pickups.
Fender 1000 twin neck pedal steel
- Shine on You Crazy Diamond 6-9 and Wish You Were Here recording sessions.
Martin D-35 acoustic guitar
Acoustic 12-string guitar
- Wish You Were Here recording sessions
Hiwatt DR103 All Purpose 100W heads
- with Mullard 4xEL34’s power tubes and 4xECC83’s pre-amp tubes.
WEM Super Starfinder 200 cabinets
- with 4×12” Fane Crescendo speakers.
Fender Dual Showman 100W head
Fender Dual Showman speaker cabinet
- with 2x 15″ JBL speakers.
Leslie 147 rotating speaker cabinet
Note: It is also reported that David used Fender Twin Reverbs during the sessions although this is not confirmed.