<b>Preamp Tubes [Note orders are picked and shipped on weekends. Please take this into consideration when placing your order.]</b>

Dual Triode Grading System: All RAM Tube Works dual triodes are tested and graded using our proprietary tube testing computer developed by Roger A. Modjeski. The following grades are available in all dual triode types. Super Low Noise (SLN): Quite simply the industry’s quietest tube, suitable for the finest phono stages as well as any other critical application. Our SLN tubes are within 1dB of the theoretical noise limit for that tube. Low Noise (LN): A superior tube especially tested for today’s quality line stages. Our LN tubes are within 4dB of the theoretical noise limit for that tube. Standard Grade (SG): Our most economical tube, yet still a product of selection. In fact, it easily outperforms the best tubes offered by other companies.

Preamplifier Tube Data: The side panel of each tube box contains the values for the following parameters for section one and section two:

VN Noise voltage ouput in micro-volts over a bandwidth of 400 - 20K Hz. RAM Our proprietary factor for the perceived sonic noisiness and variation. MIC Microphonics, susceptability to airborne and chassis vibration. GAIN AC voltage gain at 1K Hz. PVT DC value at plate to show operation variations.


7199 for Dynaco
7199 for Dynaco

$60.00
Telefunken 12AX7 Standard Grade [CALL OR EMAIL FOR AVAILABILITY]

$90.00
Telefunken 12AX7 Low Noise [CALL OR EMAIL FOR AVAILABILITY]

$120.00
6DJ8 - Standard Grade NOS Pre-war Yugo or NOS Virgin-Commie
Telefunken 12AX7 Super Low Noise smooth or ribbed plate [CALL OR EMAIL FOR AVAILABILITY]

$175.00
Mullard 12AX7 Standard Grade [CALL OR EMAIL FOR AVAILABILITY]

$75.00
6DJ8 - Standard Grade NOS Pre-war Yugo or NOS Virgin-Commie

$30.00
6DJ8 - Low Noise NOS Pre-war Yugo or NOS Virgin-Commie
6DJ8 - Super Low Noise NOS Pre-war Yugo or NOS Virgin-Commie
12AX7 - Standard Grade
6DJ8 - Low Noise NOS Pre-war Yugo or NOS Virgin-Commie

$55.00
6DJ8 - Super Low Noise NOS Pre-war Yugo or NOS Virgin-Commie

$75.00
12AX7 - Standard Grade

$30.00
12AX7 - Low Noise
12AX7 - Super Low Noise
12AX7 - Low Noise

$45.00
12AX7 - Super Low Noise

$95.00
12AT7 - Standard Grade

$30.00
12AU7 - Standard Grade
12AT7 - Low Noise

$45.00
12AT7 - Super Low Noise

$95.00
12AU7 - Standard Grade

$30.00
12AU7 - Low Noise
12AU7 - Super Low Noise
12AY7/6072A - Standard Grade
12AU7 - Low Noise

$45.00
12AU7 - Super Low Noise

$95.00
12AY7/6072A - Standard Grade

$35.00
12AY7/6072A - Low Noise
12AY7/6072A - Super Low Noise
5751 - Standard Grade for Conrad-Johnson
12AY7/6072A - Low Noise

$50.00
12AY7/6072A - Super Low Noise

$95.00
5751 - Standard Grade for Conrad-Johnson

$30.00
5751 - Low Noise for Conrad-Johnson
5751 - Super Low Noise for Conrad-Johnson
5751 - Low Noise for Conrad-Johnson

$45.00
5751 - Super Low Noise for Conrad-Johnson

$90.00
5965 - Standard Grade

$20.00
12AU7 - For CAT Preamp Line Input
5965 - Low Noise

$30.00
5965 - Super Low Noise

$60.00
12AU7 - For CAT Preamp Line Input

$95.00
6922 - Standard Grade
6922 - Low Noise
6922 - Super Low Noise
6922 - Standard Grade

$35.00
6922 - Low Noise

$70.00
6922 - Super Low Noise

$90.00
Tungsram 12AX7 - Low Noise
12AX7 Tungsram - Super Low Noise
Tungsram 12AX7 - Standard Grade
Tungsram 12AX7 - Low Noise

$90.00
12AX7 Tungsram - Super Low Noise

$125.00
Tungsram 12AX7 - Standard Grade

$65.00
12AX7-Standard Grade YUGO

$40.00
12AX7-Low Noise YUGO

$55.00
12AX7-Super Low Noise YUGO

$105.00
Amperex 7308 Gold Pin - Low Noise
Amperex 7308 Gold Pin - Standard Grade
Amperex 7308 Gold Pin - Low Noise

$95.00
Amperex 7308 Gold Pin - Standard Grade

$75.00

Need assistance? Email tubeaudiostore@gmail.com or call 805-687-2236. Photography by VisionQuest Photography