Low mu tubes for preamp usage (with pictures)
6AH4GT Tube USA Brand Vacuum Tube 6AH4 NOS | eBay
Lot of Type 6AH4 GT - 12 Low Testing, Vintage, Loose Vacuum Tubes - VIVA TUBES
2 Sylvania 6AH4GT 6AH4 GT Vacuum Tubes NOS/NIB Matched Pair | #251127486
Preamp tubes
2 NOS GE 6AH4-GT Vacuum Tubes - 1960's Vintage Triodes for Audio Amps | eBay
Sylvania USA 6AH4GT Black Plate 3 Mica Vacuum Tube 6AH4 83% | Reverb France
6AH4, Tube 6AH4; Röhre 6AH4 ID75649, Triode, vacuum | Radiomuseum.org
PAIR OF 6AH4 GT Sylvania power triode tube, NEW ! AVO VCM test. valvola lampe EUR 22,50 - PicClick IT
6AH4 Preamp..A great option for line stage | diyAudio
6AH4GT, Tube 6AH4GT; Röhre 6AH4GT ID4561, Triode, vacuum | Radiomuseum.org
6AH4GT (6AH4) Vacuum Tube - GE - USA TESTED #239 | eBay
1 X 6AH4GT - 6AH4 TUBE. NOS/NIB. RC26
RCA etc. ONE (1) 6AH4GT tNOS AT1000 TESTED Vacuum Tubes 6AH4 Audio 1953-1957 | Reverb
VinylSavor: Tube of the Month: The 6AH4
6AH4GT Tube USA Brand Vacuum Tube 6AH4 NOS | eBay
Vacuum Tube - 6AH4GT, Triode | Antique Electronic Supply
RCA etc. Pair (2) 6AH4GT AT1000 TESTED Vacuum Tube 6AH4 Audio 1953-1957 | Reverb France
VinylSavor: Tube of the Month: The 6AH4
300B + 6AH4 tube amp circuit. rectified filament supply. 진공관앰프 만들기 - YouTube
VinylSavor: Tube of the Month: The 6AH4
Vintage Amperex Electronic Tube model 6AH4 in original box | eBay
1) 6AH4GT (6AH4) Vacuum Tube - GE - USA (Black Plates) used Stock#A183 | eBay
6AH4GT Hytron By GE "D" getter low/hours/like new 1950's (21ma)
